732 results about "Carbon nanomaterials" patented technology

A method of preparing an enhanced oil recovery composition is described. The method includes carbonizing (200) a biomass waste material (202) to provide carbon microparticles (208). The method includes functionalizing (300) the carbon microparticles (208) through an acid treatment such that the carbon microparticles have a hydrophilic surface (306). The method further includes grinding (400) the carbon microparticles to provide carbon nanoparticles (406), where the carbon nanoparticles have a hydrophilic surface (306) and a hydrophobic surface (404). A method of enhanced oil recovery is also described.

The invention belongs to the technical field of all-vanadium redox flow battery electrodes, and discloses a photocuring modified graphite felt for a vanadium battery and a preparation method thereof.The preparation method comprises the following steps that functional hyperbranched polyethylene containing silicon-oxygen bonds and double bonds is subjected to auxiliary stripping under the action of ultrasound, and graphite and multi-walled carbon nanotubes are modified in situ at the same time; the preparation method comprises the following steps: preparing a high-concentration carbon nanomaterial dispersion liquid, soaking a graphite felt in the carbon nanomaterial dispersion liquid, adding a photoinitiator, stirring and standing, initiating a double-bond reaction through ultraviolet light irradiation to prepare a cured graphite felt, and further calcining to obtain the modified graphite felt. The carbon nanomaterial is uniformly and firmly adsorbed on the fiber surface of the graphite felt, the conductivity of the graphite felt is increased, meanwhile, a cage type polysilsesquioxane group is introduced, the group contains rich silicon-oxygen bonds, and more reaction active sites are provided, so that the voltage efficiency and the energy efficiency of the all-vanadium redox flow battery are improved.

The invention provides a current collector, application of the current collector, a secondary battery, a battery module, a battery pack and an electric device. A bottom coating is formed on the surface of the current collector, the bottom coating comprises a carbon nanomaterial, and the carbon nanomaterial comprises at least two of a zero-dimensional carbon material, a one-dimensional carbon material and a two-dimensional carbon material. The bottom coating is beneficial to reducing the nucleation overpotential of metal ion deposition, and can effectively induce uniform deposition of metal ions and adjust the deposition behavior of the metal ions, so that dendritic crystal growth of the metal ions is effectively inhibited, and the cycle performance and safety of the battery are improved.

The invention provides a high-lightning-stroke-resistant toughness continuous carbon fiber reinforced composite material, which is obtained by paving a plurality of layers of continuous carbon fiber resin prepregs and intercalation layers to obtain a preform and curing the preform through a conventional composite material molding process, each resin-based prepreg layer used in a preset layer number range close to the anti-lightning side is a first resin prepreg layer, the other resin-based prepreg layers are second resin prepreg layers, an intercalation is arranged between every two adjacent second resin prepreg layers, and the intercalation material is a micron conductive material with the surface density of 2-20 g / m < 2 >; wherein the resin in each resin-based prepreg layer is added with 2-10wt% of carbon nanomaterial, and the compressive strength of the rest resin-based prepreg layers after impact is higher than 250MPa. The composite material provided by the invention realizes integrated compounding of high lightning stroke resistance and high impact toughness. The anti-lightning performance of the composite material can meet the requirements of no internal layering and low fiber damage on the surface, and meanwhile, the compression strength CAI after impact can reach more than 200MPa.

The invention discloses a cement-based structure supercapacitor and a wall energy storage system, and relates to the technical field of energy storage. Wherein the cement-based structure super capacitor comprises a capacitor positive electrode, a capacitor negative electrode and a cement-based solid electrolyte; the capacitor positive electrode and the capacitor negative electrode are made of carbon nanomaterials; the cement-based solid electrolyte comprises cement, a conductive additive and a transition metal oxide; the cement-based solid electrolyte is arranged between the capacitor positive electrode and the capacitor negative electrode. According to the technical scheme, the energy storage performance of the super capacitor with the cement-based structure can be improved.

The invention provides a nitrogen-doped biomass-based fluorescent carbon quantum dot, a preparation method and application, and relates to the technical field of carbon nanomaterials, the method comprises the following steps: mixing a biomass material and deionized water under an ultrasonic condition, adding a nitrogen source, and carrying out ultrasonic dispersion to obtain a uniformly dispersed to-be-reacted solution; reacting the to-be-reacted solution at a preset temperature for a preset time to obtain a mixed product solution; and filtering and dialyzing the mixed product solution to obtain the nitrogen-doped biomass-based fluorescent carbon quantum dot solution. The nitrogen-doped biomass-based fluorescent carbon quantum dot prepared by the method shows a stable fluorescent effect and good water solubility, the free radical clearance rate can reach 90% or above, and the antibacterial rate can reach 99% or above. The method can be used in the fields of drug sustained release, bioimaging and the like.

The invention discloses a carbon dioxide hydrogenation methanation-cracking carbon preparation series method, which comprises the following steps: generating CH4 through a reaction of # imgabs0 # imgabs1 #, and realizing the production of a carbon material by adopting the technologies of condensation separation of CH4 and water vapor, CH4 cracking reaction of # imgabs2 #, cyclic utilization of hydrogen and the like. The process is composed of a carbon dioxide hydrogenation methanation reactor and a methane cracking reactor. In the methanation reactor, CO2 and H2 react under a low-temperature condition to generate CH4 and water vapor; cH4 and water vapor are separated by adopting a compressor condensation separation technology, and the separated CH4 is conveyed to a cracking reactor. In the methane cracking reactor, CH4 is cracked at a high temperature to generate H2 and a carbon nanomaterial, and then H2 is returned to the methanation reactor again. The separation of CH4 and water vapor at a relatively low temperature is realized in the tandem carbonization process through a low-temperature condensation technology; through low-temperature CO2 methanation and CH4 catalytic cracking, the content of CO2 is reduced, a high-quality carbon nanomaterial is obtained, and cyclic utilization of CO2 and H2 is realized.

The invention provides a lithium metal composite negative electrode, a preparation method thereof and a solid-state battery. The lithium metal composite negative electrode is of a three-layer structure and sequentially comprises a current collector, an active substance layer and a graphene space layer, the active substance layer is a lithium metal and / or lithium alloy layer, and the graphene space layer comprises three-dimensional graphene, lithium salt, a binder and a hydrophilic additive. In the space layer, the three-dimensional graphene is a novel carbon nanomaterial, the excellent characteristics of super-large specific surface area and super-high conductivity of the graphene are maintained, the pi-pi acting force between graphene sheet layers is overcome, the stability of a macrostructure is maintained, and the three-dimensional graphene serves as a space layer material to effectively store lithium ions and regulate and control lithium ion deposition; and the cycle and rate performance of the solid-state battery is improved.

The invention relates to a preparation method and application of polysaccharide-based fluorescent carbon quantum dots with adjustable emission wavelength, and belongs to the technical field of preparation of fluorescent carbon nanomaterials. Polysaccharide is respectively mixed with different nitrogen dopants o-phenylenediamine, m-phenylenediamine and p-phenylenediamine, then the mixture is subjected to a hydrothermal reaction to respectively prepare blue, green and yellow green fluorescent carbon quantum dots, and then the blue, green and yellow green fluorescent carbon quantum dots are applied to nitrite detection. The carbon quantum dots with different emission wavelengths and different colors are obtained by adjusting the types of the nitrogen doping agents, the problems that the emission wavelengths of the carbon quantum dots cannot be adjusted and the range is narrow are solved, and reference is provided for subsequent design and opening of the generator-based multicolor fluorescent carbon quantum dots. Meanwhile, the biological polysaccharide is used as a raw material, deionized water is used as a solvent, the whole technological process is easy to operate and low in cost, and the method has far-reaching significance on further high-value utilization of biomass resources and promotion of sustainable utilization of the biomass resources.

The invention discloses a preparation method of 3, 4-dihydroxy benzaldehyde / gelatin carbon nanomaterial-based adhesive hydrogel, and belongs to the technical field of hydrogel. According to the invention, 3, 4-dihydroxy benzaldehyde and gelatin are adopted as carbon sources, the synthesized nano-filler has amphiphilic surface characteristics, uniform dispersion of the nano-filler in a hydrogel network can be promoted, meanwhile, a mechanically firm and deformable nano-composite structure is established by utilizing the interaction of multivalent interfaces, and 3, 4-dihydroxy benzaldehyde and gelatin are added into the hydrogel network. The surface chemical property of the 1, 4-dihydroxybenzaldehyde / gelatin nano-filler not only can relieve phase separation, but also can promote synergistic energy dissipation through hydrogen bond reconstruction under the action of stress. According to the design, the inherent flexibility of the hydrogel is reserved, meanwhile, the electromechanical response capacity of the hydrogel is greatly improved, and the obtained hydrogel material has the dual functions of structural supporting and active sensing media and can be seamlessly integrated with biological tissue without sacrificing the fidelity of interface signals.

The invention provides a preparation method of a small-diameter single-walled carbon nanotube, and relates to the technical field of carbon nanomaterials. The preparation method comprises the following steps: mixing a nanoscale catalyst, high-purity graphite powder and a liquid carbon source binder, and sequentially molding and sintering to obtain a mixed graphite rod; the nanoscale catalyst contains metal elements, and the metal elements are transition metal elements and / or aluminum elements; and carrying out plasma catalytic pyrolysis by taking the mixed graphite rod as an anode and a pure graphite rod as a cathode to obtain the small-diameter single-wall carbon nanotube. The preparation method provided by the invention is high in yield (the mass ratio of the single-walled carbon nanotubes in a crude product is high), and the single-walled carbon nanotubes with smaller tube diameters can be prepared. Results of the embodiment show that when the preparation method provided by the invention is adopted to prepare the single-walled carbon nanotube, the mass ratio of the single-walled carbon nanotube in a crude product can reach 79%, and the diameter of the single-walled carbon nanotube can be as low as 1.2 nm.

The invention belongs to the field of carbon nanomaterials, and provides a method for preparing a carbon quantum dot material doped with elements such as silicon and aluminum by oxidative depolymerization and stripping of coal gangue. Comprising the steps of screening and matching of coal gangue, oxidative depolymerization stripping, centrifugal dialysis membrane filtration and modification, drying and the like, raw materials and all the steps are specifically set, and the particle size or fluorescence performance of fluorescent carbon dots can be specifically selected and set according to selective oxidative depolymerization stripping conditions. The main particle size of the prepared multi-inorganic-element doped carbon quantum dot material is kept within the range of 1.5-2.0 nm, the structure is stable, the optical performance also meets the requirements, and the material can be further modified and is expected to be applied to the fields of photovoltaic equipment, biological imaging, photocatalytic degradation of organic pollutants or sensing and the like.

In one aspect, the disclosure relates to methods for converting a plastic, e.g., a waste plastic into value-added products, the method including the steps of (a) contacting the waste plastics with a catalyst to form a reaction mixture and (b) applying microwave irradiation to the reaction mixture, thereby forming the disclosed value-added products such as hydrogen and a carbon product, e.g., a carbon nanomaterial such as a carbon nanotube and / or a carbon nanofiber. A method for producing essentially Cox-free hydrogen gas is also disclosed.

The invention discloses a thiazole-linked covalent organic framework carbon nanomaterial compound as well as a preparation method and application thereof. The preparation method comprises the following steps: adding 4, 4 ', 4'-tetramethyl-4, 4 ', 4'-tetramethyl-4, 4 '-tetramethyl-4, 4'-tetramethyl-4, 4 '- The preparation method comprises the following steps: dissolving 4, 4 ', 4' '-(1, 3, 5-triazine-2, 4, 6-triyl) triphenylamine, 4, 4', 4 ''-(1, 3, 5-triazine-2, 4, 6-triyl) tribenzaldehyde, elemental sulfur and an amino-modified carbon nanomaterial in a solvent, reacting under the action of a catalyst, and purifying after the reaction to obtain the compound. The compound has high chemical stability, high crystallinity and excellent conductivity, and shows excellent rate capability and long cycle stability in a lithium ion battery. The invention provides a new thought for design and preparation of a high-performance energy storage electrode material.

The invention relates to a positive pole piece which comprises a positive current collector and a positive active material layer arranged on at least one surface of the positive current collector, and the positive active material layer comprises a positive active material, sulfide solid electrolyte and a core-shell flame retardant, the core-shell type flame retardant comprises a core, a first shell layer coating the core, a second shell layer coating the first shell layer and a third shell layer coating the second shell layer, the core comprises an organic flame retardant, the first shell layer comprises a thermal response polymer, the melting point of the thermal response polymer is 125-275 DEG C, the second shell layer comprises an inorganic flame retardant, and the third shell layer comprises an inorganic flame retardant. And the third shell layer comprises a conductive polymer and a carbon nanomaterial. The positive pole piece provided by the invention has improved safety, and also has enhanced compression resistance and conductivity.

The invention provides conductive carbon paste as well as a preparation method and application thereof, and belongs to the technical field of conductive materials. The carbon black, the graphene and the carbon nanotubes are utilized to form a self-supported three-dimensional conductive network, so that the graphene / carbon nanotube composite material has excellent conductivity. In addition, both the graphene and the carbon nanotubes have excellent mechanical properties, flexibility and chemical stability, so that the mechanical stability of a conductive layer after the conductive carbon paste is cured can be improved. And the high-temperature-resistant binder can improve the stability of the conductive layer after the conductive carbon paste is cured. The flexibility reinforcing agent can improve the flexibility of the conductive carbon paste. The silane coupling agent can play a bridge role between the carbon material and the high-temperature-resistant binder, so that the interface affinity between the carbon nanomaterial and the high-temperature-resistant binder is enhanced; the silane coupling agent effectively inhibits agglomeration of the graphene and the carbon nanotubes in a chemical adsorption or physical coating mode. The result of the embodiment shows that the conductive layer formed by curing the conductive carbon paste provided by the invention has excellent conductive stability and mechanical stability.

The invention discloses a method for preparing a carbon source from kitchen waste, and belongs to the technical field of organic waste treatment. Comprising the following steps: preparing a Fe-loaded carbon nanomaterial; preparing a Fe-loaded carbon aerogel material; weighing the Fe-loaded carbon nanomaterial and the Fe-loaded carbon aerogel material according to a preset proportion to obtain mixed powder; the mixed powder is bonded through resin, then compression molding and roasting are conducted, and the conical filler is obtained; adding the conical filler and the kitchen waste into a pulping container of a carbon source preparation machine, and adding flora required for hydrolytic acidification of the kitchen waste; starting stirring to prepare the carbon source. According to the method, the kitchen waste is recycled through cooperation of the Fe-loaded carbon-based material and microorganisms, and the method has the advantages of being environmentally friendly, low in cost, high in efficiency, capable of being repeatedly used and the like.

The invention relates to the technical field of carbon nanomaterials, in particular to a single-walled carbon nanotube purification method. Introducing a solvent into the initial sample of the single-walled carbon nanotube: putting the single-walled carbon nanotube with the mass A into a container, adding the solvent with the mass B, and fully stirring to obtain a wet material; low-temperature oxidation in a strong oxidizing atmosphere: putting the wet single-walled carbon nanotube material into a reactor, continuously introducing inert gas, heating the reactor to a relatively low temperature T1, introducing strong oxidizing gas after the temperature is stable, and stopping introducing the strong oxidizing gas after reacting for a certain time; and acid treatment: dispersing the obtained sample into an acid solution, stirring for reaction, and then filtering and drying to obtain the purified single-walled carbon nanotube. According to the method, the purification efficiency, retention rate and purity of the single-walled carbon nanotubes are greatly improved.

The invention belongs to the field of carbon nanomaterials, and relates to a cobalt molybdenum / magnesium aluminum metal catalyst, a preparation method and application thereof, and a preparation method of a carbon nanotube. The preparation method of the cobalt molybdenum / magnesium aluminum metal catalyst comprises the following steps: S1, carrying out chelation reaction on metal salt and small molecular organic acid in a solvent, adjusting the pH value of the obtained chelation product to 3-7.5, and mixing the chelation product with a modifier to form gel; and S2, roasting the gel to obtain the cobalt molybdenum / magnesium aluminum metal catalyst. The preparation method is characterized in that in the preparation process of the cobalt-molybdenum / magnesium-aluminum metal catalyst, small-molecular organic acid is used as a chelating agent, and a specific modifier is used as an accelerant and a stabilizer, so that the prepared cobalt-molybdenum / magnesium-aluminum metal oxide has good structural stability and catalytic performance, and when the cobalt-molybdenum / magnesium-aluminum metal oxide is used as a carbon nanotube synthesis catalyst, the catalytic performance of the catalyst is greatly improved. Not only can the carbon yield be improved, but also the few-walled carbon nanotube with small tube diameter and high length-diameter ratio can be obtained.

The invention discloses a method for predicting a composite biological effect of a carbon nanomaterial. The method comprises the following steps: measuring the growth inhibition toxicity of different types of carbon-based nanomaterials to scenedesmus obliquus in the presence of singly; the growth inhibition toxicity is calculated by taking the effect multiple change generated by a treatment group compared with a control group as a toxicity index; based on the obtained growth inhibition toxicity data, constructing an SEML prediction model through a support vector machine regression algorithm or an artificial neural network regression algorithm; and predicting the composite biological effect of the carbon nanomaterial according to the SEML prediction model. According to the method, the effect multiple change FC is adopted as a toxicity index, biotoxicity evaluation is more accurate, meanwhile, the prediction model is directly constructed based on growth inhibition toxicity data, material characteristic parameters of the carbon-based nano material do not need to be measured, and the modeling process is more convenient.

The invention belongs to the technical field of carbon nanomaterials, and particularly relates to a highly graphitized carbon tube grid of a scaffold-like structure and a preparation method and application of the highly graphitized carbon tube grid. The preparation method comprises the following steps: taking aluminum oxide with interconnected pore channels inside as a template, and obtaining a three-dimensional interconnected nickel nanorod grid film through an electro-deposition method; by utilizing the catalytic graphitization property of metal nickel and regulating and controlling parameters of acetylene when the acetylene is decomposed on the surface of the metal nickel, the problem that three-dimensional highly-graphitized carbon with controllable morphology and size cannot be synthesized due to nickel deformation caused by a catalytic mechanism is solved, and the highly-graphitized carbon tube grid with a scaffold-like structure is obtained; and the crystallinity of the carbon tube grid film is effectively improved at a relatively low temperature. The preparation process is simple, feasible and environment-friendly, and equipment is low in cost and common. A smooth ion transport channel provided by the vertical carbon tube array and a rapid electron conduction network provided by the highly graphitized interconnected carbon tube structure are expected to be used in the fields of alternating current filtering, high power output and the like.

The invention relates to the technical field of water treatment, and provides a polymeric coagulant as well as a preparation method and application thereof. The polymeric coagulant is prepared from the raw materials of liquid polyaluminum chloride, the dimethyl diallyl ammonium chloride copolymer, the chitosan-porous carbon nanomaterial and the quaternary ammonium salt modified bentonite, and the liquid polyaluminum chloride and the dimethyl diallyl ammonium chloride copolymer can achieve the effects of adsorption charge neutralization, adsorption bridging and screen cloth sweeping; the quaternary ammonium salt modified bentonite and the chitosan-porous carbon nanomaterial have an adsorption effect, and the four raw materials are polymerized together to jointly play coagulation and adsorption effects, so that the purpose of efficiently removing organic pollutants and suspended solids is achieved. Results of the embodiment show that the polymeric coagulant is suitable for treatment of various wastewater such as sludge water, landfill leachate and domestic sewage, and the removal rate of COD and suspended solids is high.

The invention provides a preparation method of high-response-characteristic high-thermal-conductivity particle / liquid crystal elastomer bionic muscle fibers, and belongs to the technical field of functional materials. According to the method, the surface of the liquid crystal elastomer preform is coated with the high-thermal-conductivity particles, the heat conduction capability of the high-thermal-conductivity particles is utilized, so that the heated part of the liquid crystal elastomer preform can be uniformly stretched when the liquid crystal elastomer preform is drawn by adopting a hot drawing forming method, and the liquid crystal elastomer preform is partially or completely immersed in the suspension during soaking, so that the liquid crystal elastomer preform is completely immersed in the suspension; and the bionic muscle fiber subjected to hot drawing molding shows a differential hot bending characteristic. The method can realize continuous processing and is suitable for large-scale production. The prepared bionic muscle fiber keeps the characteristic of high indirect thermal stimulation response, and has important application value in the fields of medical devices, motion assistance, bionic materials and the like in the aspects of controlling elbow parts with loads, clamping devices and the like as a flexible driver.

The invention belongs to the technical field of electrocatalysts, and discloses a method for preparing a heterogeneous monomolecular electrocatalyst by using water-soluble metalloporphyrin / phthalocyanine and a carbon carrier and application of the heterogeneous monomolecular electrocatalyst. The method comprises the following steps: 1) dissolving water-soluble metalloporphyrin / phthalocyanine in water to obtain a water-soluble metalloporphyrin / phthalocyanine solution; 2) soaking the electrode coated with the nanoscale carbon material in a water-soluble metalloporphyrin / phthalocyanine solution; or uniformly mixing the carbon nanomaterial organic solvent dispersion liquid with a water-soluble metalloporphyrin / phthalocyanine solution to obtain a composite catalyst; and dispersing the composite catalyst in an organic solvent, uniformly mixing with a binder solution, coating an electrode with the mixture, and drying to obtain the heterogeneous monomolecular electrocatalyst. The method disclosed by the invention is simple, catalyst molecules can be completely dispersed and adsorbed on a nanoscale carbon material in a single molecule form, and active sites are improved; the prepared monomolecular electrocatalyst is used for electrocatalysis of carbon dioxide reduction reaction, and high product selectivity and stability of carbon dioxide reduction can be realized.

The invention provides an amphiphilic nitrogen-doped coal-based carbon dot and a preparation method thereof, and belongs to the technical field of carbon nanomaterials. The method comprises the following steps: performing oxidation-depolymerization treatment on coal by using a mixed solution of formic acid and hydrogen peroxide to obtain coal-based carbon dots; uniformly dispersing the coal-based carbon dots and polyamine in a solvent 1, and then carrying out hydrothermal reaction 1 to obtain nitrogen-doped coal-based carbon dots; dissolving the nitrogen-doped coal-based carbon dots in a solvent 2, and then adding halogenated alkane for reaction 2 to obtain an intermediate product; the intermediate product is dissolved in a solvent 3, then a catalyst and a sulfonating agent are added for a reaction 3, and the amphiphilic nitrogen-doped coal-based carbon dots are obtained. The coal-based carbon dots have controllable hydrophilic and hydrophobic structures, excellent surface activity and interfacial activity, excellent dispersion stability and ultralow interfacial tension in a high-salinity oil-water system, and can meet the actual application requirements in the fields of oil-water interface regulation and control, solid-liquid interface wetting regulation and control and the like.

The invention relates to the technical field of glucose sensors, in particular to a direct electron transfer type sensor electrode mediated by a carbon nanomaterial, a preparation method of the direct electron transfer type sensor electrode and a glucose biosensor with the sensor electrode. The sensor electrode comprises: a base electrode having an electrode working area; the nanometer conducting layer is arranged on the electrode working area, and the nanometer conducting layer comprises a carbon nanometer material; and the analyte detection layer is arranged on the nano conductive layer, and the analyte detection layer comprises glucose dehydrogenase.

The invention discloses a preparation method of bamboo cellulose derived carbon nanomaterial-based super-strong and super-tough hydrogel, and belongs to the technical field of hydrogel materials. The preparation method of the bamboo cellulose-derived carbon nanomaterial-based super-strong and super-tough hydrogel comprises the following steps: mixing phthalic anhydride functionalized bamboo fibers, organic carboxylic acid, a nitrogen source and water, and carrying out hydrothermal reaction to obtain a bamboo cellulose-derived carbon nanomaterial solution; the method comprises the following steps: mixing a bamboo cellulose derived carbon nanomaterial solution, a hydrogel monomer, a cross-linking agent, a photoinitiator and water, and carrying out a free radical polymerization reaction under an illumination condition to obtain the bamboo cellulose derived carbon nanomaterial-based super-strong and super-tough hydrogel. The hydrogel prepared by the invention has excellent breaking strength, superior breaking energy and toughness and good adhesive force and electrical conductivity, and the problem that the existing hydrogel with excellent performance needs to adopt a complex preparation method is solved.

The invention relates to a preparation method of a BOPET (Biaxially Oriented Polyethylene Terephthalate) film with flame retardant property and electromagnetic shielding property. The preparation method comprises the following steps: S1, carrying out corona treatment on the BOPET film; s2, preparing a dispersion liquid containing an acidified conductive carbon nanomaterial and aramid nanofibers with carboxyl groups on the surface; and S3, dipping the BOPET film treated in the step S1 into the dispersion liquid, then taking out the BOPET film and drying the BOPET film, and completing multiple times of dipping-drying treatment to obtain the BOPET film with the flame retardant property and the electromagnetic shielding property. According to the invention, chemical bond connection is formed between the coating and the substrate film through chemical treatment, and meanwhile, relatively strong interaction is also formed between the coatings, so that the coating can be effectively adsorbed on the surface of the BOPET film, and BOPET is endowed with good flame retardant property and electromagnetic shielding property.

The invention belongs to a sodium-ion battery negative electrode material, and particularly relates to a sodium-ion battery negative electrode material as well as a preparation method and application thereof. The invention provides a sodium ion battery negative electrode material, which adopts a mode of coating a carbon nanomaterial on the surface of hard carbon to prepare an artificial SEI film so as to solve the reaction between groups on the surface of the hard carbon and an electrolyte. The adopted polymer has a high pi-pi conjugated polymer chain, belongs to a conductive polymer and is good in electronic conductivity; the electrochemical stability is high, and degradation is almost avoided in the battery circulation process; the structure is compact, the integrity of the hard carbon closed pore structure can be maintained from the perspective of physical limitation, and the cycle stability of the hard carbon material can be maintained. The prepared negative electrode material has higher first efficiency, larger specific capacity and excellent cycle performance, and meanwhile, the process steps are simple and efficient.

A nuclear fuel cell cladding that includes a zirconium-carbon covetic material. The zirconium-carbon covetic material has a carbon component associated with the surface of zirconium particles. The amount of carbon present in the zirconium-carbon covetic material is in a range of greater than 0.1 wt % to about 25 wt % of the zirconium-carbon covetic material. The carbon component may include carbon nanotubes, carbon nanomaterials, graphene, or graphene nanoplatelets. The carbon component may be uniformly distributed within the zirconium matrix. The zirconium-carbon covetic material may be formed from a zirconium alloy. The zirconium-carbon covetic material may be configured for use in various types of nuclear reactors. The synthesis of the cladding involves a process of plasma-enhanced chemical vapor deposition. The resulting nuclear fuel cell cladding offers improved performance and reliability for nuclear reactor applications.