1088 results about "Zinc ion" patented technology

The invention discloses a zinc-bromine flow battery multifunctional negative electrode electrolyte and a preparation method thereof, and belongs to the technical field of electrochemical energy storage, and the method comprises the following steps: uniformly stirring and mixing a solvent, deionized water and a cosolvent, adding an electrolyte, stirring until the electrolyte is completely dissolved, then adding a supporting electrolyte and a negative electrode additive, stirring until the supporting electrolyte and the negative electrode additive are completely dissolved, and obtaining the zinc-bromine flow battery multifunctional negative electrode electrolyte. The multifunctional negative electrode electrolyte of the zinc-bromine flow battery is obtained; the negative electrode cosolvent is dimethylformamide; and the negative electrode additive is at least one of saponin and cinnamyl aldehyde. Saponin molecules are adsorbed on the surface of the zinc electrode, and electronegative carboxyl groups of the saponin molecules form an electrostatic repulsion net in an electric double layer, so that zinc ions are forced to be uniformly dispersed, local ion concentration hot spots are eliminated, and dendritic crystal nucleation is inhibited from the source. In cinnamyl aldehyde, the strong electronegativity of oxygen atoms and the electronegativity of aldehyde oxygen are far higher than those of hydrogen, so that electrons are strongly attracted, adjacent carbon atoms are positively charged, polar adsorption sites are formed, the hydrogen evolution reaction is effectively inhibited, and the stability and the cycle life of the battery are greatly improved.

The invention relates to the technical field of water-based energy storage batteries, in particular to a two-phase electrolyte for a water-based zinc ion battery and a preparation method of the two-phase electrolyte, and the two-phase electrolyte comprises soluble zinc salt, water and quaternary ammonium nitrate; the soluble zinc salt comprises one of zinc trifluoromethanesulfonate, zinc bis (trifluoromethylsulfonyl) imide, zinc acetate, zinc sulfate and zinc chloride, and the molar concentration of the soluble zinc salt is 1-5 mol / L; the quaternary ammonium nitrate is one or more than two of tetramethylammonium nitrate, tetraethyl ammonium nitrate, tetrabutyl ammonium nitrate, hexadecyl trimethyl ammonium nitrate and octadecyl trimethyl ammonium nitrate, and the molar concentration of the quaternary ammonium nitrate is 1-3 mol / L. The preparation method is simple, convenient and efficient, the reversibility of the zinc anode is optimized, the method is crucial for promoting the design of a practical water-based zinc ion battery, and the application of the zinc-based battery in the field of energy storage is further accelerated.

The invention discloses a cellulose paper-based diaphragm for a zinc-iodine battery as well as a preparation method and application of the cellulose paper-based diaphragm. The diaphragm is of a three-layer composite structure and comprises a matrix layer formed by paper pulp fibers such as softwood pulp, hardwood pulp, bamboo pulp or straw pulp through a wet papermaking technology, and compact functional layers which cover the two sides of the matrix layer and are formed by oxidized nanocellulose (TOCN). The preparation method mainly comprises the following steps: preparing the paper-based diaphragm matrix through wet papermaking, coating the two sides of the paper-based diaphragm matrix with TOCN aqueous dispersion, and finally carrying out hot-pressing drying treatment to enable the three layers to be tightly combined. According to the invention, the nano aperture and the surface negative electricity functional group of the TOCN layer are utilized, so that physical blocking and electrostatic repulsion of polyiodide ions can be realized at the same time, and the shuttle effect is effectively inhibited; and the uniform pore channels can guide zinc ions to uniformly deposit and inhibit dendritic crystal growth. The diaphragm is green in raw material, simple in process and low in cost, and the cycle life and coulombic efficiency of the battery can be remarkably improved when the diaphragm is applied to the zinc-iodine battery.

The embodiment of the invention relates to the technical field of electrolytes, and provides a preparation method of a hydrogel electrolyte, the hydrogel electrolyte and a zinc ion battery, and the preparation method comprises the following steps: preparing a chitosan aqueous solution with a first preset concentration; the preparation method comprises the following steps: adding a certain amount of genipin into a chitosan aqueous solution, so that the genipin and chitosan in the chitosan aqueous solution are crosslinked at a first preset temperature; coating the cross-linked slurry on a substrate of a preset material, and drying and demolding at a second preset temperature to obtain a hydrogel electrolyte dry film; and soaking the hydrogel electrolyte dry film in a liquid electrolyte with a second preset concentration to absorb the liquid until the liquid is saturated, thereby obtaining the hydrogel electrolyte. Chitosan and genipin used in the embodiment of the invention are natural substances and are non-toxic and harmless, so that the prepared hydrogel electrolyte belongs to an environment-friendly electrolyte material, the problem that a cross-linking agent in a traditional electrolyte material is relatively high in toxicity is effectively avoided, and the problem of side reaction caused by using water as an electrolyte solvent is also avoided.

The invention discloses a modified zinc negative electrode and an aqueous zinc ion battery comprising the same, the modified zinc negative electrode comprises a negative electrode current collector, at least one surface of the negative electrode current collector is provided with a modified coating, and the modified coating comprises a rare earth-based metal organic framework material and a binder. In the modified coating, the rare earth-based metal organic framework material changes the microstructure of the zinc negative electrode and homogenizes the surface electric field and ion flow of the zinc negative electrode, so that disordered deposition of zinc ions can be blocked, a uniform transmission channel can be provided for the zinc ions, growth of zinc dendritic crystals and dead zinc accumulation on the surface are inhibited, and the zinc negative electrode has the advantages of high corrosion resistance and high corrosion resistance. And meanwhile, direct contact between the electrolyte and the zinc negative electrode can be effectively avoided, and hydrogen evolution side reaction and electrode corrosion are inhibited, so that the cycle performance of the aqueous zinc battery is improved.

This application relates to the field of hydrogel electrolyte technology, specifically disclosing a modified sodium alginate crosslinked hydrogel electrolyte, its preparation method, and its applications. This application reduces environmental toxicity and pollution by introducing modified sodium alginate as a crosslinking agent into the hydrogel electrolyte. The interaction between sodium alginate and zinc ions inhibits zinc dendrite formation, regulates the interfacial growth between the negative electrode and the electrolyte, and thus extends battery life; it also has a certain inhibitory effect on hydrogen evolution reaction. This application can prepare the modified sodium alginate crosslinked hydrogel electrolyte using a simple free radical polymerization method. Furthermore, compared to conventional aqueous batteries, the hydrogel electrolyte can better control the interfacial growth of the positive and negative electrodes.

The invention discloses macromolecular antibacterial artificial leather and a preparation method thereof, and relates to the technical field of artificial leather preparation. The preparation method comprises the following steps: preparing zinc-loaded silicon dioxide with amino grafted on the surface and quaternized polyether polyurethane containing an epoxy group, mixing the zinc-loaded silicon dioxide and the quaternized polyether polyurethane to prepare antibacterial protection slurry, and bonding the zinc-loaded silicon dioxide and the quaternized polyether polyurethane through ring-opening reaction of the amino and the epoxy group during curing to form a cross-linked network, so as to obtain the antibacterial protection layer with antibacterial property, flexibility and wear resistance; zinc ions have an obvious inhibiting effect on bacteria such as gram-positive bacteria and gram-negative bacteria and fungi such as candida albicans, quaternary ammonium salt has an obvious inhibiting effect on influenza viruses, and the zinc ions and the quaternary ammonium salt have a synergistic effect, so that the antibacterial range of the artificial leather is wider, the inhibiting force on germs is stronger, and the antibacterial property of the artificial leather is further improved.

The invention provides a PDA-ZrO2 coated zinc anode, a preparation method thereof and a battery, and belongs to the technical field of electrochemical energy storage materials. According to the zinc anode, a polydopamine-zirconium dioxide composite protective layer is constructed on the surface of a zinc substrate. According to the composite layer, a polydopamine bottom layer is formed through self-polymerization of dopamine on the surface of the zinc foil, and then a zirconium dioxide layer is introduced on the polydopamine bottom layer through an in-situ mineralization method. The PDA-ZrO2 composite layer disclosed by the invention has the main advantages that the PDA-ZrO2 composite layer ingeniously combines the strong adhesive force, excellent flexibility and ion regulation and control capability of polydopamine and the high mechanical strength and chemical stability of zirconium dioxide. The synergistic effect of'soft and hard combination 'can effectively homogenize zinc ion flow, inhibit dendritic crystal growth and block side reaction caused by water molecules, so that the interface stability of the zinc metal anode is remarkably improved, and the cycle life of the zinc metal anode is remarkably prolonged. The preparation method is simple in process, mild in condition and easy for large-scale production.

The invention relates to a vacancy-assisted tin heterovalent doped bismuth selenide material as well as a preparation method and application thereof, Se vacancy defects existing in VSe-Bi2Se3 are utilized to assist in stable doping of Sn < 4 + > into Bi sites, so that the Sn-VSe-Bi2Se3 material is obtained. As the positive electrode material of the zinc ion battery, the Sn-VSe-Bi2Se3 shows high specific capacity, excellent rate capability and long-acting stable cycle performance, and has the advantages of simple and convenient process, mild conditions and suitability for large-scale production.

The invention relates to a preparation method of an in-situ growth neutral gel electrolyte membrane regulated and controlled by ethanolamine and application of the neutral gel electrolyte membrane in negative electrode protection of an aqueous zinc ion battery. The gel is promoted to form a film on the surface of a zinc plate by utilizing the crosslinking effect of ethanolamine, acrylamide and 2-acrylamide-2-methylpropanesulfonic acid and the strong bonding effect of ethanolamine and the zinc plate. The membrane can improve the problems of low ion transfer rate, high free water molecule content and high activity of the traditional gel electrolyte, effectively inhibit the generation of hydrogen evolution reaction, and improve the ion transfer number, thereby improving the stability of the negative electrode and the intestinal circulation performance of the battery. The method is simple and safe to operate and shows excellent electrochemical performance, and the invention provides the method for protecting the negative electrode of the aqueous zinc ion battery.

The invention relates to an electrolyte for synergistically stabilizing positive electrode iodine multi-electron reaction through four-combination zinc salt and a high-surface-capacity zinc-iodine soft package battery. The electrolyte comprises the four-combination zinc salt and water, in the electrolyte, the total concentration of zinc ions in the four combinations of zinc salts is 2 + / -0.2 mol / L; the four-combination zinc salt is a four-combination zinc salt; the SO4 < 2-> in the electrolyte buffers the pH value of a system, so that side reaction of a negative electrode is reduced; cH3COO <-> can be cross-linked with I3 <->, so that shuttling of polyiodide is inhibited, and reversibility of a two-electron reaction is enhanced; bromide ions Br <-> in the electrolyte are chemically combined with I < + > through isohalogen to excite four-electron reaction; the trifluoromethanesulfonate OTf <-> with strong electronegativity surrounds the positive electricity I < + > by virtue of an ion atmosphere effect, so that active water molecule attack hydrolysis failure is avoided, a synergistic stable positive electrode iodine multi-electron reaction is realized, and the high-surface-capacity zinc-iodine soft package battery is beneficial to promoting the development of the zinc-iodine battery to practical application.

The invention discloses a battery electrolyte and a preparation method thereof, an aqueous zinc-iodine battery and terminal equipment. The battery electrolyte comprises an additive, an electrolyte and a solvent, the additive contains an amino functional group, and the concentration of the additive is 0.1 g / L-0. 5 g / L. In addition, the additive can also utilize a nitrogen-containing functional group to reduce the shuttle effect of polyiodide and prevent the loss of an iodine positive active material, so that the electrode of the zinc ion battery is protected, and the cycle life of the zinc ion battery is remarkably prolonged (the capacity is about 20mAh / g higher than that of an electrolyte without L-tyrosine).

The invention provides a seawater soaking wound hydrogel dressing and a preparation method thereof, a drug-loaded nano system 4OI (at) ZIF-8 (at) PAD with a core-shell structure is constructed, an anti-inflammatory drug 4-octyl itaconic acid and zinc ions are jointly encapsulated in a ZIF-8 framework, and a polydopamine coating is wrapped, so that synergistic loading and controllable release of the drug and metal ions are realized. According to the dressing, dopamine modified hyaluronic acid is used as a matrix, a temperature-sensitive material and an enzyme catalysis cross-linking system are combined, stable gel can be rapidly formed in situ within 5 seconds, and the dressing has excellent tissue adhesion performance (the adhesion strength reaches 6.7 kPa). Experiments prove that the hydrogel dressing has the characteristics of broad-spectrum antibiosis, inflammation regulation and control and long-acting release. Animal experiments prove that the healing rate of seawater soaking wounds treated by the dressing on the twelfth day is as high as 95.7% and is remarkably superior to that of a commercial silver ion gel control group, scars are less after healing, and an efficient, safe and easy-to-implement scheme is provided for marine environment wound nursing.

The invention discloses an organic long-chain zinc salt for a zinc secondary battery electrolyte and a preparation method and application thereof. The organic long-chain zinc salt comprises a long-chain group, an acidic group and zinc ions, the long-chain group comprises at least one of substituted or unsubstituted C8-16 alkyl groups, and the acidic group comprises at least one of a sulfonic acid group, a phosphoric acid group and a sulfuric acid group. The organic long-chain zinc salt serving as an electrolyte salt of the zinc secondary battery can be adsorbed on the surface of zinc to form a protective layer, so that the cycle life and the capacity retention ratio of the zinc secondary battery are effectively improved.

The application discloses sulfonated silk protein gel as an interface modification layer of a water-based zinc electrode and a preparation method thereof, and belongs to the technical field of negative electrode materials of zinc ion batteries. The sulfonated silk protein gel is prepared by using natural silk, raw materials are widely sourced, and the sulfonated silk protein gel is green and environment-friendly. The prepared sulfonated silk protein gel contains rich functional groups (‑OH, ‑NH‑, ‑C=O, ‑SO3H and the like), can cover the entire zinc electrode surface, forms a gel-like transition zone at the interface, and provides basic protection for the zinc electrode. In addition, the gel layer optimizes the electric field, improves the interface compatibility, can guarantee uniformity in the nucleation and growth process, plays an obvious role in controlling the dendrite growth, effectively prolongs the service life of the zinc ion battery, and improves the cycle stability of the zinc ion battery.

The invention relates to the technical field of high polymer materials, in particular to an anti-aging thread gluing material and a preparation process thereof. Comprising the following steps: preparation of aluminum-doped zinc oxide, tannic acid modified aluminum-doped zinc oxide, ferulic acid modified nylon fiber and modified nylon master batch preparation of the thread gluing. According to the invention, groups of tannic acid and aluminum ions and zinc ions of aluminum-doped zinc oxide are driven by heat energy of a reflux reaction to simultaneously generate chelation-dehydration condensation to form a five-membered ring chelate, so that a compact coating layer is formed on the surface, and the coating layer is simple in component and has very stable chemical bonds; the ultraviolet light stability of aluminum-doped zinc oxide is enhanced, the layer can generate hydrogen bond / pi-pi interaction with nylon amido bonds, the interface bonding strength is improved, the particle size is kept at the level of no filter pressure fluctuation in the spinning process, and the volume resistivity of nylon fibers is reduced.

The invention provides an aqueous zinc ion battery electrolyte, a preparation method thereof and a zinc ion battery, and belongs to the technical field of aqueous zinc ion batteries. The aqueous zinc ion battery electrolyte comprises an additive, an inorganic zinc salt and a solvent, the additive comprises at least one of trimethylamine substituted by 1-3 substituent groups, benzene and C3-C10 straight-chain alkane, and the substituent groups comprise phosphonic acid groups or phosphinic acid groups; the solvent comprises a sodium chloride aqueous solution. By adopting the additive with a specific structure and the solvent containing the sodium chloride aqueous solution, the cycle performance of the zinc negative electrode in the water-based zinc ion battery can be remarkably improved, and the service life of the water-based zinc ion battery is prolonged.

This invention provides a method for preparing (002) crystal-plane oriented metallic zinc and its application. The invention employs a two-electrode electrochemical deposition technique, using iron foil, titanium foil, or copper foil as the working electrode, commercial zinc foil as the counter electrode, and an aqueous zinc salt solution as the electrolyte. Constant current density discharge deposition is used to deposit (002) crystal-plane oriented metallic zinc on the working electrode; the constant current density is 50 mA cm⁻¹. ‑2 ~200 mA cm ‑2 The (002) crystal-plane oriented metallic zinc prepared by this invention can be used in rechargeable zinc-ion batteries. The two-electrode electrolytic cell device used in the preparation of metallic zinc in this invention is simple, the preparation process is straightforward, and the preparation method is more universal. The (002) crystal-plane oriented metallic zinc prepared according to the method of this invention can suppress zinc dendrite growth and hydrogen evolution, thereby improving the service life of rechargeable zinc-ion batteries.

The invention relates to the technical field of biomedical materials, in particular to a degradable zinc-based composite GBR film with the surface loaded with a nanometer electrostatic spinning fiber coating and preparation and application of the degradable zinc-based composite GBR film. According to the degradable zinc-based composite GBR membrane with the surface loaded with the nano electrostatic spinning fiber coating, the nano fiber coating is implanted into the surface of a zinc-based material such as zinc alloy by adopting an electrostatic spinning technology, and the degradable zinc-based composite GBR membrane with the surface loaded with the nano electrostatic spinning fiber coating can inhibit excessive release of zinc ions, improve biocompatibility of the zinc alloy and the like, promote osteoblast differentiation and promote angiogenesis. The electrostatic spinning coating on the surface of the zinc-based composite GBR membrane serves as a physical barrier to block invasion of epithelial cells and fibrocytes, and angiogenesis is promoted along with degradation of fibers and slow release of drugs; the porous zinc alloy and the like in the middle layer not only provide mechanical support, but also release zinc ions in the degradation process to achieve multiple functions of resisting bacteria and promoting osteogenesis.

The invention relates to the technical field of aqueous zinc ion batteries, in particular to an aqueous zinc ion battery electrolyte as well as a preparation method and application thereof. The invention provides an aqueous zinc ion battery electrolyte. The aqueous zinc ion battery electrolyte comprises soluble zinc salt and fulvic acid, and the concentration of the fulvic acid in the electrolyte is 0.01-50 g / L; wherein rich oxygen-containing functional groups contained in fulvic acid molecules can serve as strong coordination sites to be combined with Zn < 2 + > to generate coordination, so that the migration rate of zinc ions is effectively reduced, and uniform deposition of the zinc ions on the surface of the negative electrode is promoted; meanwhile, direct contact between water molecules and the zinc negative electrode can be reduced by utilizing a molecular interface layer formed by fulvic acid molecules on the surface of the zinc negative electrode, so that water-induced side reaction can be relieved. And the cycle stability of the battery is improved through the effects. In addition, the fulvic acid is wide in source, low in cost and environment-friendly, the production cost of the water-based zinc ion battery is reduced, and large-scale application of the water-based zinc ion battery is promoted.

The embodiment of the invention provides an electrolyte, a preparation method thereof and an aqueous zinc ion battery, the electrolyte comprises a zinc salt and an electrolyte additive, the electrolyte additive comprises a complex formed by an amine ligand and a reducing metal, and the activity of the reducing metal is weaker than that of zinc. When the electrolyte is applied to the aqueous zinc ion battery, the hydration degree and the deposition overpotential of the zinc ion can be reduced, the reversible reaction can be promoted, and a stable protection layer can be generated on the surface of a zinc negative electrode, so that the zinc dendrite growth and the corrosion side reaction are inhibited, the stability of the zinc negative electrode is improved, and the cycling stability of the aqueous zinc ion battery is improved.

The invention relates to the technical field of zinc-iodine battery electrolyte, in particular to aqueous zinc-iodine electrolyte as well as a preparation method and application thereof. The aqueous zinc-iodine battery electrolyte contains an additive and a zinc salt, the molar concentration of the additive is 0.15 M to 0.8 M, and the additive is selected from one or more of triethylamine hydrochloride, 1-butyl-1-methylpyrrolidine chloride, 1, 3-dimethylimidazole chloride, pyridine hydrochloride, aniline hydrochloride, guanidine hydrochloride and 1-ethyl-3-methylimidazole chloride. The method can directionally regulate and control zinc negative electrode deposition and iodine positive electrode reaction kinetics, realizes four-electron reversible conversion, promotes uniform deposition of zinc ions and inhibits side reactions during charging, inhibits multi-iodide shuttle and I < + > hydrolysis during discharging, and has wide application prospects in the zinc-iodine battery electrolyte industry.

The invention discloses a universal water-based zinc-based battery electrolyte additive and a battery preparation method, and particularly relates to the technical field of water-based zinc-based secondary batteries, the universal water-based zinc-based battery electrolyte additive is a nitroimidazole organic matter, contains an imidazole ring and a nitryl group, and is characterized in that the nitroimidazole organic matter is a nitroimidazole organic matter; the high-electronegativity zinc ion electrode has one or more functional groups of methyl, hydroxyl, carboxyl, carbonyl, imino, sulfo and halogen, nitryl can be reduced to form imino or imidazole is subjected to ring opening to form an azo compound in the electrochemical process, and high-electronegativity sites can be adsorbed on the surface of the electrode or interact with zinc ions. Nitrogen sites with high electronegativity can be adsorbed to the surface of the zinc negative electrode, contact between water and the zinc negative electrode is isolated, a hydrogen evolution reaction and a corrosion side reaction are limited, the electrochemical environment of an electrode interface is stabilized, and the electrolyte additive can promote 3D diffusion of zinc ions, reduce the critical nucleation size of zinc deposition and inhibit growth of zinc dendrites.

The invention provides an MOF-rGO composite modified zinc negative electrode as well as a preparation method and application thereof. The preparation method comprises the following steps: preparing rGO dispersion liquid by taking GO as a raw material, and loading rGO in the rGO dispersion liquid to the surface of zinc foil by adopting an L-B self-assembly method to obtain rGO modified zinc foil; and carrying out first impregnation on the rGO modified zinc foil in a zinc salt solution, and then carrying out second impregnation in an organic ligand solution to obtain the MOF-rGO composite modified zinc negative electrode. Directional arrangement of rGO on the surface of the zinc foil is achieved through L-B self-assembly, the obtained rGO modification layer is compact and stable, MOF is synthesized on the surface of the material in situ without using a binder on the basis, growth of dendritic crystals is effectively inhibited through the synergistic effect that rGO provides a conductive network and MOF regulates and controls zinc ion diffusion, and the preparation method has the advantages that the preparation process is simple, and the preparation cost is low. Therefore, the cycle performance and the energy density of the battery are remarkably improved, the short circuit of the battery is reduced, and industrial mass production is adapted.

The invention belongs to the technical field of electrochemical energy storage, and discloses a weak-solvation non-aqueous electrolyte as well as a preparation method and application thereof. According to the weak solvation non-aqueous electrolyte, 1-methylimidazole is used as a solvent, and zinc bis (trifluoromethane sulfonimide) is used as a soluble salt. Zn < 2 + > forms a solvation structure of Zn (EMI) 4.99 (TFSI) 1.01 in the electrolyte. Along with the progress of an electrochemical reaction process, TFSIanions are preferentially reduced and decomposed, and an organic-inorganic hybrid double-layer SEI film rich in inorganic components such as ZnF2, ZnS and ZnNx is formed on the surface of a zinc negative electrode, so that the problems of hydrogen evolution side reaction and zinc dendrite existing in an aqueous electrolyte are effectively avoided, and efficient and reversible deposition / stripping of Zn < 2 + > is realized. The zinc ion battery using the electrolyte shows ultra-long cycle life, ultra-low overpotential, high coulombic efficiency and wide temperature adaptability, and a new solution is provided for practical application of the zinc ion battery.

The invention discloses a zinc negative electrode plate with a three-dimensional copper foil substrate and a preparation method and application thereof, relates to the technical field of aqueous zinc ion batteries, and provides a preparation method of a three-dimensional copper foil substrate loaded zinc positive electrode aiming at the problems of short cycle life, low coulombic efficiency and the like caused by dendritic crystal growth and side reaction of an aqueous zinc ion battery zinc negative electrode. A three-dimensional porous structure is constructed on a zinc-loving copper foil substrate through a wet chemical method, and the method comprises the following specific steps: (1) immersing a copper foil into an acidic solution containing ferric trichloride hexahydrate for reaction to prepare a three-dimensional porous copper foil; and (2) taking a three-dimensional copper foil (3D Cu) as a substrate, and loading zinc metal through an electroplating process to obtain the three-dimensional copper foil substrate galvanized negative electrode (3D Cu-Zn). The three-dimensional porous structure can balance electric field distribution, induce uniform deposition of zinc ions, inhibit dendritic crystal growth and optimize current distribution.

The invention discloses a preparation method of a modified zinc negative electrode, the modified zinc negative electrode and an aqueous zinc ion battery, and belongs to the technical field of zinc ion batteries. The preparation method of the modified zinc negative electrode comprises the following steps: diluting a tetrakis (hydroxymethyl) phosphonium chloride (THPC) solution with the mass ratio of 80% to a certain concentration, and uniformly stirring to form a treatment solution; after cutting the zinc negative electrode, carrying out surface degreasing treatment on the zinc negative electrode; immersing the treated zinc negative electrode in a tetrakis hydroxymethyl phosphonium chloride treatment solution at room temperature for reaction; and after the reaction is finished, washing the residual solution on the surface of the zinc negative electrode after the reaction by using deionized water and absolute ethyl alcohol, and drying in a vacuum drying oven to obtain the modified zinc negative electrode. With the adoption of the preparation method of the modified zinc negative electrode, the modified zinc negative electrode and the aqueous zinc ion battery, the problem of poor cycling stability of the modified zinc negative electrode in an aqueous electrolyte can be solved.

The invention discloses an aqueous zinc-vanadium battery electrolyte preparation method and a battery, and belongs to the technical field of aqueous zinc ion batteries. The preparation method comprises the following steps: preparing a polyquaternium aqueous solution; and adding soluble zinc salt into the polyquaternium aqueous solution, stirring and dissolving to obtain the composite electrolyte. According to the electrolyte, through the synergistic effect of the polyquaternary ammonium salt and the zinc salt, the acidity and water activity of a system are effectively reduced, dendritic crystal growth and hydrogen evolution reaction of a zinc negative electrode are inhibited, meanwhile, a nitrogen-containing protective layer is formed on the surface of a vanadium positive electrode, and vanadium dissolution is reduced. The battery containing the electrolyte shows excellent cycle stability in a wide temperature range of-20 to 80 DEG C, the cycle life of the zinc symmetric battery exceeds 3000 hours, the capacity retention rate of the whole battery after 4000 cycles reaches 87.6%, and the technical problems of aggravation of interface side reaction and fast degradation of battery performance under high-temperature and high-acidity conditions are solved.

Disclosed is a zinc zoledronate micro-nanoparticle adjuvant, which contains zinc and zoledronic acid and optionally contains a phosphate and aluminum. The preparation method therefor comprises performing mixed precipitation on a soluble salt solution containing zinc ions, zoledronic acid, and sodium hydroxide. The adjuvant can be used to prepare vaccines, etc.

The invention provides an aqueous electrolyte containing high-receptor fluorinated alcohol, a preparation method of the aqueous electrolyte and application of the aqueous electrolyte in a zinc ion battery, and belongs to the technical field of batteries. The aqueous electrolyte containing the high-acceptor fluorinated alcohol provided by the invention comprises the high-acceptor fluorinated alcohol, the high-receptor fluorinated alcohol is prepared from one or more of difluoropropanol, trifluoropropanol, tetrafluoropropanol and pentafluoropropanol. According to the invention, a high-acceptor fluorinated alcohol cosolvent is selected to carry out anion solvation structure regulation and control on the electrolyte, so that the problem of interface water activity is solved, meanwhile, rapid desolvation which cannot be realized by a traditional cosolvent is taken into account, and the electrochemical properties of the positive electrode and the negative electrode of the aqueous zinc ion battery are synchronously improved.