238 results about "Polymer electrolytes" patented technology

A membrane electrode assembly for a fuel cell includes, in this order, a cathode catalyst layer, a solid polymer electrolyte membrane, and an anode catalyst layer. The cathode catalyst layer contains at least a catalyst and a highly oxygen-permeable ionomer. At least one selected from the group consisting of the cathode catalyst layer, the solid polymer electrolyte membrane, and the anode catalyst layer contains a nitrogen-containing multidentate ligand coordinatable to an iron ion.

Composite solid polymer electrolytes (SPE), organic cathode electrodes, and solid-state lithium batteries (SLBs) that incorporate the SPE and / or the organic cathode electrodes. The composite solid polymer electrolytes include a hybrid polymer matrix, an LiTFSI salt dispersed in the matrix polymer matrix, and an LLZTO ceramic filler dispersed in the matrix polymer matrix. The organic cathode electrodes contain perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA).

The present invention relates to a polymer electrolyte membrane, a method for manufacturing same, and a membrane-electrode assembly, a water electrolysis cell, and a fuel cell each comprising same. The polymer electrolyte membrane comprises, as an electrolyte, a reaction product of a cation conductor and an amine compound, wherein the cation conductor includes at least one sulfonic acid group as a side chain, and the amine compound includes at least one sulfonic acid group as a side chain and at least one amino group as a side chain, a terminal, or a combination thereof.

This invention discloses a method for preparing a zinc-based solid electrolyte membrane based on a polycarbonate-based ionic liquid. In the presence of a catalyst, carbon dioxide and epichlorohydrin are alternately copolymerized at 25-70°C and 2.0-4.0 MPa carbon dioxide to obtain a polycarbonate with chloromethyl side groups, which is then purified by dissolution / precipitation. A side group substitution reaction is carried out by adding 1-methylimidazolium to a polar solvent to obtain an imidazolium halide-type ionized polycarbonate. Subsequently, a zinc-free solution is used... 2+ The zinc-based solid polymer electrolyte membrane was obtained by anion exchange with TFSI-salt followed by desalting and purification. The ionic liquid was then mixed with zinc salt, and a membrane was fabricated using a casting method, followed by drying and peeling to obtain the membrane. The large volume and high degree of charge delocalization of anions in the ionic liquid are beneficial for reducing ion-pair interactions, providing a better ion transport environment for the zinc-based solid electrolyte membrane and addressing the issue of Zn content in existing zinc-based solid electrolytes. 2+ It has strong interactions with anions and polymer polar groups, which can easily lead to increased resistance to ion migration.

The application provides a preparation method and application of a solid-state polymer electrolyte based on dynamic dipole compensation, and belongs to the technical field of solid-state polymer electrolytes.The solid-state polymer electrolyte is prepared by using polyurethane epoxy resin and PEO as polymers, compounding at the molecular scale to form a mechanical interlocking structure, and then doping and modifying the mechanical interlocking structure by MOF-177 material to obtain a new composite solid-state polymer electrolyte with "charge balance / dynamic dipole compensation". Through the synergistic effect of the mechanical interlocking composite structure and the MOF, a more uniform electric potential and a nearly "charge neutral" interface environment (referring to the minimization of interface potential fluctuation / electrostatic non-uniformity, rather than no potential difference) are constructed, so that the Li + migration energy barrier is reduced, ion migration and diffusion are improved, the uniform interface electric field and Li + flux are obtained, the "hot spot" deposition is weakened, the interface contact stability and the anti-branching ability are enhanced, and long cycle of the solid-state lithium metal battery is realized.

The present invention relates to a gel-type polymer electrolyte, a lithium metal battery comprising same, and a method for manufacturing same and, more specifically, comprises: an organic solvent; a lithium salt; an additive; and a crosslinked polymer, wherein a current collector includes an organic phosphate, the lithium salt includes at least one of a borate-based lithium salt and a fluorine-based lithium salt, and the organic phosphate is a low-molecular compound having a molecular weight (Mw) of 100-400 g / mol and is dispersed in the organic solvent.

Electrodes useful for membrane-free electrode assemblies, membrane-free electrode assemblies, methods of making, and uses thereof. The electrodes comprise a catalyst layer; and a solid polymer electrolyte layer for ion-conduction deposited on the catalyst layer. The solid polymer electrolyte layer is deposited on a catalyst layer as an ionomer resin solution and forms an ion conducting layer thereby eliminating the need for a stand-alone membrane that is introduced as a separate component into electrode assemblies.

An on-chip visible light signal detector based on the photoimpedance effect of polymer electrolyte belongs to the field of functional photonic chip technology. It consists of a substrate layer, a lower cladding layer, a lower metal layer, a polymer grooved layer, an ion-polymer electrolyte core layer, and an upper metal layer, and the device is a MIM structure. The ion-polymer electrolyte core layer has an inverted ridge waveguide structure. The polymer electrolyte material PIL / PBI exhibits a photoimpedance effect; that is, when the detected optical signal propagates in the inverted ridge waveguide, it interacts with the polymer electrolyte, converting light energy into heat energy, increasing the concentration and activity of free ions inside the PIL / PBI, thereby changing its impedance value. This invention solves the problems of single detection dimension and insufficient responsivity in existing on-chip visible light detectors, realizing the detection of three dimensions of optical signal: polarization state, wavelength, and power. It has advantages such as fast response speed, simple fabrication process, low cost, small size, and high integrability.

The application discloses a polymer electrolyte with three-dimensional network fillers and a preparation method thereof, and belongs to the technical field of lithium ion batteries. The application is based on a synergistic design concept of premixed filler guiding in-situ network growth, and hydrolysis of tetraethyl orthosilicate (TEOS) is regulated by formic acid. The premixed nano-SiO2 particles are used as nucleation sites to induce directional growth of SiO2 generated in-situ on the surface of the nano-SiO2 particles and mutual crosslinking, and the fillers form a three-dimensional crosslinked network structure in the polymer matrix. The application overcomes problems of easy agglomeration of fillers, incomplete crystallization inhibition and incomplete crosslinking of a single in-situ growth network due to lack of nucleation sites in a traditional physical blending method, and realizes synergistic enhancement of mechanical strength and ion transmission efficiency.

An electrochemical cell having a cathode comprising a fluorinated carbon nanotube (F-CNT), an anode and a solid electrolyte; wherein the solid electrolyte comprises an electrolyte component comprising i. 5 to 50 wt. % of an alkali metal-containing electrolyte salt, and ii. 50 to 95 wt. % of a polymer. Embodiments do not require a carbon-based conductive-adjuvant in the cathode. The thickness of the solid electrolyte may be least 5 microns. A container comprising cell may have space to allow for thermal expansion thereof. They may be used at elevated temperatures greater than 65° C. or more, such as in a subterranean well.

The present invention relates to a membrane electrode unit (1) having a polymer electrolyte membrane (2) and at least one electrode (3) disposed on the polymer electrolyte membrane (2), wherein the membrane electrode unit (1) has silver and / or a silver-containing compound (4). The present invention also relates to an electrolytic cell, a battery stack, an electrolytic device, a method (100) for manufacturing a membrane electrode unit (1), and the use of the membrane electrode unit (1).

This invention provides an in-situ polymerized crosslinked solid electrolyte and its preparation method, belonging to the field of solid electrolyte technology. This invention involves the in-situ polymerization and crosslinking of divinylperfluoroalkane with ester monomers. Utilizing the strong bond energy of the C-F bond, the oxidative decomposition resistance of the resulting in-situ polymer electrolyte is improved, thereby enhancing the electrochemical stability of the lithium-ion battery. Taking advantage of the extremely high chemical inertness of the perfluoroalkane segments, they preferentially accumulate at the interface during the contact between the in-situ polymer electrolyte and the lithium electrode, forming a robust and stable SEI film, improving ionic conductivity, and thus enhancing the capacity retention of the lithium-ion battery. Furthermore, the polymer formed from the divinylperfluoroalkane in the in-situ polymer electrolyte has an amorphous structure, which prevents the crystallization of the ester polymer, enhances the freedom of movement of the perfluoroalkane segments, provides a rapid migration path for lithium ions, further improving ionic conductivity, and thus enhancing the capacity retention of the resulting lithium-ion battery.

This invention belongs to the field of polymer-based solid-state battery technology, specifically disclosing a method for preparing a precursor solution and a gel polymer electrolyte, and their applications. The precursor solution includes a liquid monomer and an electrolyte salt dissolved in the liquid monomer, wherein: the monomer is one or more of the following: cyclic ether, cyclic carbonate, acrylamide and acrylamide derivatives containing functional groups, acrylate and acrylate oligomers containing double bonds on one side, acrylonitrile and acrylonitrile derivatives containing functional groups, cyanoacrylate and cyanoacrylate derivatives containing functional groups; the electrolyte salt is a lithium salt, potassium salt, or sodium salt. This invention utilizes electron beam irradiation to initiate the polymerization of the precursor solution inside the battery to prepare a gel polymer electrolyte or polymer-based battery, avoiding the adverse effects of using initiators on battery performance, while effectively improving the contact performance of the electrode-electrolyte interface. This preparation method is simple and efficient, and is conducive to large-scale production.

A single-ion conducting gel polymer electrolyte includes a fluorine-based compound with 25-40% of its main chain converted to carbon double bonds, and 35-55 wt % of a lithium salt. The polymer ensures anion immobilization, thereby limiting conduction primarily to lithium ions. By including an optional additive such as PEGMEMA in specific weight ratios, the electrolyte achieves both high ionic conductivity and robust film formation. A method for preparing this gel polymer electrolyte involves mixing the fluorine-based compound, lithium salt, and a radical initiator, followed by in-situ crosslinking. The resulting free-standing film exhibits enhanced lithium-metal anode stability, suppressing dendrite formation. Also disclosed is a lithium secondary battery with this gel polymer electrolyte layer positioned between positive and negative electrodes, demonstrating improved cycle life and higher voltage stability disclosure.

This invention relates to a ferric chloride solid-state battery and its preparation method. The battery utilizes a ferric chloride composite cathode material modified with 2-phosphonobutane-1,2,4-tricarboxylic acid and incorporating lithium vanadium oxide functional additives. This composite cathode, together with a lithium metal anode and a gel polymer electrolyte membrane formed by in-situ polymerization, constitutes an integrated solid-state energy storage system. The composite cathode forms a stable coordination layer on the ferric chloride surface via PBTCA, and competitively anchors chloride ions at strong Lewis acid sites on the LVO particle surface, blocking the formation of polychloride intermediates. These two aspects synergistically inhibit the dissolution of the active material. The gel polymer electrolyte membrane uses a fibrous material as a framework and is formed by in-situ polymerization in a lithium salt-containing DOL solution and a Lewis acid-containing DME solution, creating a three-dimensional cross-linked network. Based on this design, the solid-state battery exhibits good interfacial contact, a lithium-ion transference number of no less than 0.416, and a long cycle life exceeding 990 cycles.

This disclosure relates to a membrane electrode assembly for a water electrolyzer, a method for manufacturing the same, and a water electrolyzer including the membrane electrode assembly. The membrane electrode assembly comprises a first ionic conductor forming a coating on the surface of a catalyst for the oxygen evolution reaction (OER) and a second ionic conductor not coated on the surface of the catalyst. This increases the interfacial binding strength between the polymer electrolyte membrane or porous diffusion layer (PTL) and the catalyst layer for the OER, thereby improving mass transfer, performance, and durability.

The present application provides a kind of gel polymer electrolyte, using lithium salt and lithium-containing solid additive as solute, polymer monomer and first additive as solvent, preparation precursor solution;The precursor solution is cured in situ, namely the gel polymer electrolyte;The first additive is ethylene glycol diacetate.The gel polymer electrolyte provided has excellent stability at room temperature and high temperature, and has the advantage of stable long cycle when applied to solid-state battery.

The application discloses a polymer electrolyte for a lithium metal battery and a preparation method and application thereof, and relates to the technical field of battery electrolyte materials. + The desolvation energy barrier at the electrode interface is reduced, the ionic conductivity of the electrolyte is significantly enhanced, and the lithium ion can be guided to form a stable solid electrolyte interface film in cooperation with the lithium ion, so that the uniform lithium ion flow is achieved, the uncontrollable growth of lithium dendrites is significantly inhibited, the side reaction consumption of the electrolyte in the cycle process is greatly reduced, and the long-period stability of the battery is effectively ensured, and the application is suitable for large-scale popularization and application in lithium metal batteries.

The present invention relates to a polymer electrolyte comprising a polymer backbone derived from acrylamide monomers and a bis-acrylamide crosslinker that effectively encapsulates deep eutectic solvents (DES) and is compatible with high potential electrodes. The present invention further relates to composite cathodes and electrochemical cells comprising the polymer electrolyte, and their uses.

The application relates to the technical field of solid electrolytes, in particular to a gel polymer electrolyte and a preparation method and application thereof, the preparation method of the gel polymer electrolyte comprises the following steps: S1, mixing polyethylene glycol diacrylate, N,N'-bis(acryloyl)cystamine and tris(2-hydroxyethyl)isocyanuric acid triacrylate in a protective atmosphere to obtain a polymer monomer mixture, then placing the polymer monomer mixture and an initiator in a lithium-based electrolyte, stirring, and obtaining a precursor solution; S2, solidifying the precursor solution to obtain the gel polymer electrolyte. The preparation method provided by the application is simple in process, raw materials are easy to obtain, and the method is easy to put into large-scale production. Meanwhile, the gel polymer electrolyte prepared has good mechanical properties and high room-temperature ionic conductivity.

The present disclosure relates to a membrane-electrode assembly, a method for manufacturing same, and an electrochemical cell comprising same. More specifically, by introducing a bonding layer containing a polyphenol compound having adhesive strength under moisture, the membrane-electrode assembly may have improved interfacial bonding between an electrode and a polymer electrolyte membrane and stability, without performance degradation, and improved chemical durability due to the removal of radicals generated when the electrochemical cell is in operation.

This invention discloses a solid electrolyte, its preparation method, and its application, relating to the field of battery technology. The raw material components of the solid electrolyte include comonomers, lithium salts, and initiators. The comonomers include chain acrylate monomers containing ether bonds and cyclic carbonate monomers. The solid electrolyte provided in this application can solve the technical problems of existing technologies, such as the flammability and leakage hazards of traditional liquid electrolytes, the difficulty in balancing ionic conductivity and flexibility with high interfacial impedance in existing polymer electrolytes, and the complex and inefficient preparation processes.

Provided is a solid polymer electrolyte membrane that has high durability during electrolysis.　Provided is a solid polymer electrolyte membrane which contains a fluorine-containing polymer that comprises a unit represented by a specific formula (1). In the infrared spectrum of the fluorine-containing polymer, the ratio of the maximum absorbance I1690 at 1690 ± 10 cm-1 to the maximum absorbance I2350 at 2350 ± 30 cm-1 is 0.150 or less. By Raman spectroscopy, when a cross section in the thickness direction is irradiated with polarized light orthogonal to the thickness direction to obtain a spectrum chart, A1 is the ratio of the peak area a2 of 680 to 760 cm-1 to the peak area a1 of 1025 to 1095 cm-1, and when the cross section in the thickness direction is irradiated with polarized light parallel to the thickness direction to obtain a spectrum chart, B1 is the ratio of the peak area b2 of 680 to 760 cm-1 to the peak area b1 of 1025 to 1095 cm-1, and the ratio of B1 to A1 is 1.05 or more.

The application provides a composite polymer solid electrolyte membrane and a preparation method and application thereof, wherein lithium salt, a cyclic ether compound and a non-ether polymer soluble in or insoluble in the cyclic ether compound are mixed, a polymerizable system is uniformly coated on one side or both sides of a porous membrane through a method such as drop coating, blade coating, spray coating, gravure coating and the like, the non-ether polymer soluble in or insoluble in the cyclic ether compound in the mixture is intercepted on one side of the porous membrane, part of the lithium salt and the cyclic ether compound penetrate into the inside of the porous membrane and the other side under the action of gravity and capillary force, and a polymer electrolyte layer different from the inside of the porous membrane is formed on both sides of the porous membrane through ring-opening polymerization, so that the composite polymer solid electrolyte membrane is obtained.

The present invention provides apparatus, systems, and methods for sensor dies, particularly silicon-based polymer sensor dies. [Solution] A sensor die may be configured to detect the presence of a material (e.g., leakage from a battery) by measuring impedance fluctuations via a plurality of comb electrodes (IDEs) and a sensing layer. The sensor die may comprise a silicon oxide substrate on a silicon wafer, a plurality of IDEs (e.g., made of metal) positioned in close proximity to the surface of the substrate, one or more retaining rings defining one or more regions configured to contain at least a certain volume of material, and a sensing layer (e.g., made of a solid polymer electrolyte (SPE)) positioned in close proximity to the plurality of IDEs.

Disclosed is a gel polymer electrolyte, comprising: a cross-linked composition formed by pectin, its derivative or a combination thereof; a polyol; and a lithium salt. Also disclosed is a lithium battery comprising the same and a method for preparing the same.