85 results about "Lithium nitrate" patented technology

The invention discloses a lithium titanate battery, and relates to the technical field of batteries. The battery comprises a positive electrode, a negative electrode, an electrolyte and a diaphragm, and an addition product synthesized by dimethyl fumarate and benzidine according to a specific molar ratio is added into the electrolyte as a viscosity modifier, so that the viscosity increasing trend of the electrolyte at a low temperature is effectively reduced, and the migration rate of lithium ions is improved. And the electrolyte also comprises a lithium salt, an organic solvent and an auxiliary additive, so that the low-temperature performance and the cycling stability of the battery are favorably optimized. A positive active material is one or more of lithium iron phosphate, lithium manganate, lithium cobalt oxide or nickel manganese cobalt ternary materials, a negative active material is lithium titanate, and additives such as lithium nitrate and fluoroethylene carbonate are further combined, so that the capacity retention ratio and the charge-discharge efficiency of the battery in an extreme low-temperature environment of-40 DEG C are remarkably improved. The lithium titanate battery provided by the invention has excellent low-temperature adaptability, safety and long cycle life, and is applicable to power batteries and energy storage systems in alpine regions.

The invention discloses a lithium ion battery electrolyte and a lithium ion battery. The lithium ion battery electrolyte comprises an organic solvent, a composite lithium salt and an additive, the composite lithium salt comprises lithium hexafluorophosphate, lithium bis (fluorosulfonyl) imide and lithium nitrate; the additive comprises a compound 1. By adopting the low-concentration composite lithium salt and the electrolyte containing the compound 1, the oxygenolysis of the electrolyte is inhibited, the solvation energy of solvated lithium ions is reduced, the kinetics of the electrolyte is improved, and the rate discharge, high temperature and cycle performance of the battery are improved.

This method comprises: mixing a first solution containing a metal nitrate with a second solution containing lithium hydroxide to precipitate a metal hydroxide; thermally decomposing lithium nitrate produced from the metal nitrate and the lithium hydroxide; and recovering lithium oxide contained in the thermal decomposition product of the lithium nitrate. This method may further comprise converting lithium oxide into lithium hydroxide and reusing the lithium hydroxide.

This invention provides a method for preparing a lithium-rich manganese-based cathode material, comprising the following steps: D1: Lithium nitrate, manganese nitrate, nickel nitrate, and cobalt nitrate are dissolved in deionized water at a molar ratio of 1.2:0.54:0.13:0.13 to prepare a metal salt solution. 1.2 Mn 0.54 Ni 0.13 Co 0.13 O2 is co-precipitated with a precipitant and a complexing agent in a solvent to generate a lithium-rich manganese-based core; D2: The lithium-rich manganese-based core is mixed with an interfacial bridging agent in an organic solvent and stirred for 2-4 hours. After drying, an interfacial bridging agent layer is formed on the lithium-rich manganese-based core; D3: The material obtained after step S2 is mixed successively with three metal salt solutions of different concentrations, and different NCM shells are coated on the outside of the interfacial bridging agent layer; D4: After high-temperature sintering, a lithium-rich manganese-based cathode material is obtained. In this invention, the LMRO core, Li2ZrO3 bridging agent, and gradient NCM shell work synergistically to greatly enhance the inhibition of lattice oxygen migration, improve structural stability, and thus significantly improve the first-time efficiency and suppress the cumulative gas release.

The present invention relates to an electrolyte for a lithium-sulfur battery, and a lithium-sulfur battery comprising the same, the electrolyte comprising: a first solvent comprising a heterocyclic compound comprising at least one double bond and simultaneously comprising an oxygen atom or a sulfur atom; a second solvent comprising at least one of an ether-based compound, an ester-based compound, an amide-based compound, and a carbonate-based compound; a lithium salt; lithium nitrate; and a borate-based lithium salt.

The present application relates to a kind of high-pressure-resistant gel electrolyte stable to lithium negative electrode and preparation method thereof, belong to gel polymer electrolyte technical field.The electrolyte is composed of PVDF-HFP film and electrolyte;The electrolyte is composed of lithium salt I, ester organic solvent, ether organic solvent and lithium salt II;The ester organic solvent is composed of DEC and FEC or is composed of EMC and FEC;The ether organic solvent is 18-crown ether-6, 15-crown ether-5 or 12-crown ether-4;The lithium salt II is lithium nitrate, and lithium salt I is different from lithium salt II.Ether organic solvent and lithium salt II are added to the mixed solution composed of lithium salt I and ester organic solvent, and electrolyte is obtained by heating and stirring, the electrolyte is obtained by soaking PVDF-HFP film in electrolyte, and the interface compatibility of the electrolyte with high-nickel positive electrode and lithium negative electrode is good, can inhibit lithium dendrite growth, and improve the cycle performance of battery.

A lithium secondary battery according to the present disclosure includes: a cathode which includes a cathode active material layer including a lithium transition metal oxide; an anode disposed opposite to the cathode and including an anode active material layer, and an electrolyte which includes a lithium salt, a solvent including a carbonate solvent and an ether solvent, and lithium nitrate (LiNO3). In the electrolyte, a lithium nitrate dissolution ratio, defined by Equation 1, in the electrolyte is 0.01 to 0.07.

Provided is a separator used for a secondary battery. The separator may comprises a complex-containing layer which is provided on a surface in contact with a negative electrode of the secondary battery and which contains an electrolyte complex. The electrolyte complex may contain a nitrate and a coordination substance. The nitrate may include at least one selected from lithium nitrate, potassium nitrate, cesium nitrate, sodium nitrate, silver nitrate, calcium nitrate, zinc nitrate, copper nitrate, magnesium nitrate, indium nitrate, aluminum nitrate, ammonium nitrate, barium nitrate, and iron nitrate.

The invention belongs to the field of lithium batteries, and particularly relates to a sulfonic acid-based deep eutectic gel electrolyte and a preparation method and application thereof, the electrolyte comprises a eutectic electrolyte and a polymer monomer; the eutectic electrolyte comprises a hydrogen bond donor and a hydrogen bond acceptor, the hydrogen bond donor is a sulfonic acid substance, and the hydrogen bond acceptor is a lithium salt; the molar ratio of the sulfonic acid substance to the lithium salt is (4-2): 1; the eutectic electrolyte further comprises an additive, and the additive is one or more of vinylene carbonate, fluoroethylene carbonate and lithium nitrate; the polymer monomer is a cyclic ether substance; the polymer monomer further comprises a cross-linking agent, DOL polymerization is initiated by using lithium salt anions as an initiator through an in-situ polymerization process, an initiator with high reaction activity does not need to be additionally added, the preparation operation steps are greatly simplified, and meanwhile, the production link and the material cost are further reduced through the design of the in-situ polymerization sulfonic acid group deep eutectic electrolyte. And the preparation targets of low cost and easy large-scale preparation are achieved.

The present application belongs to the technical field of lithium nitrate solution aluminum-lithium separation, and specifically relates to a method for self-adsorption separation and recycling of aluminum nitrate solution containing trace lithium, which comprises the following steps: S1: treating lithium ore or nitric acid leaching solution containing lithium waste by using a nanofiltration membrane to obtain monovalent ion solution mainly containing lithium nitrate and non-mono-valent ion solution mainly containing aluminum nitrate; S2: using the monovalent ion solution obtained in S1 to prepare battery-grade lithium carbonate after purification and impurity removal; S3: adding magnesium oxide or magnesium carbonate to the non-mono-valent ion solution obtained in S1 to adjust the pH to 2-3.4, and the reaction temperature is 40-100 DEG C; S4: washing the Al(OH)3 precipitate obtained in S3 with water to obtain a mixture containing Li + solution and crude Al(OH)3; and subsequent treatment. The present application has the advantages of simple process, low processing cost, high lithium metal recovery rate, green and environmentally-friendly process, good economic benefits, and easy industrialization application.

The invention relates to a low-damage corrosion-resistant aluminum oxide polishing solution for an optical device and a preparation method of the low-damage corrosion-resistant aluminum oxide polishing solution, and belongs to the technical field of precise polishing. The polishing solution comprises 1-10wt% of modified alpha-phase aluminum oxide nanoparticles which are subjected to double modification by a silane coupling agent and carboxylic acid grafting; 0.1-5 wt% of a dispersant, wherein the dispersant is at least one of sodium polyacrylate, ammonium polyacrylate and sodium citrate; 0.01-1.5 wt% of a corrosion inhibitor, wherein the corrosion inhibitor is at least one of benzotriazole, phytic acid and sodium silicate; 0.05 to 2 wt% of a nonionic surfactant; the pH regulator is used for regulating the pH value of the system to 8-10; 1-8.5 wt% of a functional additive, wherein the functional additive is a compound composed of zinc sulfate, lithium nitrate and cerous nitrate; and the balance deionized water. According to the invention, the silane coupling agent and carboxylic acid grafted dual-modified aluminum oxide abrasive material is adopted, so that mechanical scratches on the surface of an optical device can be reduced.

The invention belongs to the technical field of batteries, and particularly relates to a lithium ion battery positive plate capable of releasing lithium nitrate, a diaphragm-free lithium ion battery and a preparation method. The surface of the positive plate of the lithium ion battery is coated with a hollow mesoporous silica insulating coating capable of releasing lithium nitrate, so that the battery completely abandons a traditional polyolefin diaphragm. The coating can store lithium nitrate by utilizing a hollow cavity of the hollow mesoporous silica while realizing physical isolation of the electrode, and a lithium nitrate additive is released by virtue of a mesoporous channel, so that the cycling stability of the battery is improved. According to the invention, the hollow mesoporous silica capable of releasing lithium nitrate is prepared into the self-supporting functional coating by using the flexible bonding effect of the binder. According to the structure, the thermal stability of the battery is remarkably improved, and the risk of high-temperature thermal shrinkage short circuit is reduced. Lithium nitrate in the hollow mesoporous silica is released into the electrolyte and participates in forming a nitrate-containing and high-strength solid electrolyte interface film or a positive electrode electrolyte interface film, so that the cycle life is prolonged.

The invention discloses a fused salt heat storage material based on a lithium nitrate and polyvinylidene fluoride hybridized zeolite imidazate framework structure. The fused salt heat storage material comprises the following components in parts by mass: 20-35 parts of sodium nitrate, 25-40 parts of potassium nitrate, 10-20 parts of lithium nitrate, 10-25 parts of calcium nitrate and 0.5-2 parts of a polyvinylidene fluoride hybridized zeolite imidazate framework structure material, the polyvinylidene fluoride hybridized zeolite imidazate skeleton structure material is prepared by the following steps: step 1, adding a zinc nitrate solution into a 2-methylimidazole solution under a stirring condition, standing, carrying out a crystallization reaction, washing and drying to obtain a zeolite imidazate skeleton structure material; and step 2, mixing the zeolite imidazate skeleton structure material, polyvinylidene fluoride and dimethylformamide, and drying to obtain the polyvinylidene fluoride hybridized zeolite imidazate skeleton structure material. The fused salt heat storage material is high in specific heat capacity and low in viscosity.

The present application belongs to the technical field of lithium primary battery, and particularly relates to a preparation method of lithium primary battery electrolyte, which comprises the following steps: dissolving lithium nitrate in acetone and fully stirring to make the lithium nitrate fully dissolved until the solution is clear and transparent; adjusting the lithium salt concentration in the solution to 1.5-2 mol / L; adding fluoroethylene carbonate and fully stirring until the solution is clear and transparent; in the solution, the volume ratio of fluoroethylene carbonate to acetone is 1:1-1:3; finally, adding propylene carbonate and fully stirring until the solution is clear and transparent; in the solution, the volume ratio of propylene carbonate to acetone is 1:2-1:4. The present application ensures that the electrolyte has high conductivity and can bear high efficient transportation of lithium ions, effectively increasing the discharge specific capacity and specific energy of the battery. In addition, the present application further provides a lithium primary battery electrolyte.

The application relates to a preparation method and application of a low-temperature-resistant ester-based electrolyte. The method comprises the following steps: firstly, dissolving lithium bistrifluoromethylsulfonylimide into a mixed solution of difluoropropionic acid ethyl ester and fluorinated ethylene carbonate to obtain solution A; secondly, dissolving lithium nitrate into ethylene glycol dimethyl ether to obtain solution B; and thirdly, adding solution B into solution A to obtain the low-temperature-resistant ester-based electrolyte. The weak-solvent electrolyte is composed of three solvents and two lithium salts, the carboxylic acid ester has a low melting point and a strong salt-dissolving capacity, the freezing point of the electrolyte can be significantly reduced, the electrolyte still has strong fluidity at low temperature, the migration rate of lithium ions at low temperature is improved, and the low-temperature performance of the battery is improved. The low-temperature-resistant ester-based electrolyte prepared by the application provides valuable insights for the next-generation electrolyte of lithium ion batteries operated under extreme conditions.

The invention belongs to the technical field of metal-air batteries, and discloses an electrolyte suitable for high-power charging of a zinc-air battery and application of the electrolyte. The electrolyte comprises deionized water, alkali metal hydroxide, zinc salt and a nitrate additive. The nitrate additive is sodium nitrate or lithium nitrate, and the concentration of the nitrate additive in the electrolyte is 0.20-1.0 mol L1. When the electrolyte is applied to the zinc-air battery, a multi-phase reaction interface of a positive electrode of the zinc-air battery can be effectively stabilized by inhibiting a bubble coalescence behavior, so that the zinc-air battery can stably operate under high-power charging. By adopting the electrolyte, the polarization of the zinc-air battery during high-power charging can be reduced, and the Faraday efficiency can be improved. And charging is carried out under the current density of 100 mA cm < 2 >, the charging voltage is lower than 2.20 V after 100 cycles, and the Faraday efficiency is greater than 90%.

According to the cement foaming fireproof door core double-sided composite board and the preparation method thereof, by adding the modified phase change energy storage material with the microcapsule structure, packaging of a lithium nitrate / potassium nitrate composite phase change material is achieved, and the bonding strength, the breaking strength and the fire resistance and heat insulation performance of a cement foaming fireproof door core board are remarkably improved; the modified phase change energy storage material is provided with a silicon dioxide loaded lithium nitrate-potassium nitrate composite phase change material core material, a polyacrylate middle layer and a polyurethane shell layer.

The application discloses a lithium-carbon fluoride battery electrolyte and application, and belongs to the technical field of lithium / carbon fluoride primary batteries. The lithium-carbon fluoride battery electrolyte comprises lithium salt, solvent and NO3 ‑ additive; the solvent comprises high dielectric constant solvent, ether solvent and nitrogen heterocyclic crown ether solvent; the NO3 ‑ additive is at least one of lithium nitrate, copper nitrate, ammonium nitrate, potassium nitrate, sodium nitrate, barium nitrate, zinc nitrate, lead nitrate, nickel nitrate, magnesium nitrate, calcium nitrate, strontium nitrate and cesium nitrate; the NO3 ‑ additive has a mass fraction of 5% to 20%. The high-concentration nitrate additive is introduced to form a protective layer on the surface of the lithium metal negative electrode, thereby inhibiting the side reaction of the lithium metal and the solvent and accelerating the Li + transporting effect, thereby reducing the polarization phenomenon during battery discharging; the nitrogen heterocyclic crown ether can promote the dissolution of the high-concentration nitrate and the lithium fluoride of the positive electrode in the battery discharging process, reduce the polarization of the battery and improve the energy density of the battery.

The application belongs to the technical field of secondary battery material regeneration, and more particularly relates to a method for regenerating materials of waste lithium iron phosphate batteries. The specific regeneration steps comprise: disassembling and separating to obtain positive electrode sheets, and then drying to remove residual electrolyte in the positive electrode sheets; laying the positive electrode sheets in a reactor, preheating to 100 DEG C, then introducing water vapor into the reactor, under the condition of a pressure of 0.3-0.5 MPa, pressure maintaining for 1-3 h, then releasing the pressure to normal pressure, discharging, separating and removing the positive current collector, and collecting the positive active material layer; crushing the positive active material layer to obtain positive active material layer fragments; taking the positive active material layer fragments, mixing lithium nitrate, ferrous oxalate and biomass sugar uniformly, heating and warming in an inert atmosphere, after heat preservation and melting reaction, cooling, water washing, drying, heating and warming in an inert atmosphere, after heat preservation and calcination, cooling and discharging, the regeneration of materials of waste lithium iron phosphate batteries is completed.

The present disclosure pertains to a method for producing a fluoride, comprising a step for firing a mixture containing a titanium oxide, an aluminum oxide, a starting material fluoride having a composition different from that of the fluoride to be produced, and a lithium-containing compound in an inert gas atmosphere. The titanium oxide contains TiO2. The aluminum oxide contains Al2O3. The raw material fluoride contains NH4F. The lithium-containing compound contains at least one compound selected from the group consisting of lithium fluoride, lithium carbonate, and lithium nitrate.

This disclosure provides a lithium secondary battery with improved high-temperature cycling performance. Specifically, the present invention relates to a lithium secondary battery comprising a positive electrode, a negative electrode, a separator, and an electrolyte, wherein the positive electrode comprises lithium iron phosphate oxide as the positive electrode active material, and the positive electrode loading is 32 mg / cm³. 2 Up to 60 mg / cm 2 The electrolyte comprises a lithium salt, a first organic solvent, a second organic solvent, a first additive, and a second additive, wherein the first organic solvent is a cyclic lactone compound, the second organic solvent is a carbonate organic solvent, the first additive is lithium nitrate (LiNO3), and the second additive is a sulfonamide compound.

The invention provides an electrolyte, a battery and a power utilization device, and aims to solve the technical problem of low solubility of lithium nitrate in a carbonic ester organic solvent. The electrolyte comprises a lithium salt, a carbonic ester organic solvent, lithium nitrate and an electrolyte additive, wherein the electrolyte additive comprises a perfluoroalkyl silane compound with a structural formula as shown in a formula (I): Rf-R2-Si (OR1) 3 formula (I); in the formula (I), R1 and R2 are respectively and independently alkyl or aryl derivatives; rf is a perfluoroalkyl chain with a structural formula as shown in a formula (II): CnF2n + 1 formula (II); in the formula (II), n is an integer from 4 to 8. According to the perfluoroalkyl silane compound, the solubility of lithium nitrate in a carbonic ester organic solvent is remarkably improved, and meanwhile, the cycle life of a battery is prolonged.

The invention relates to the technical field of solid-state lithium battery preparation, in particular to a solid-state electrolyte membrane and a preparation method and application thereof. A polyvinylidene fluoride-hexafluoropropylene copolymer or polyvinylidene fluoride is used as a polymer matrix, LiTFSI or LiFSI is used as a lithium salt, sodium niobate or lithium niobate is used as a dielectric filler, lithium nitrate is used as an interface stabilizer, and the polymer matrix, the lithium salt, the dielectric filler and the interface stabilizer are mixed in the presence of a solvent to obtain the solid polymer electrolyte. The solid polymer electrolyte is coated on a substrate, the substrate is composed of an Al2O3 layer and a base material, the Al2O3 layer is located on the surface of the base material, the solid polymer electrolyte is coated on the surface of the Al2O3 layer, and the solid electrolyte membrane is obtained after curing. The solid electrolyte membrane provided by the invention has the characteristics of high ionic conductivity, long cycle life and high safety, and overcomes the defects of single performance, complex process and difficulty in amplification of the traditional solid electrolyte membrane.

The invention provides a potassium sulfate modified binder for casting and a preparation method thereof, and belongs to the field of casting materials. The potassium sulfate modified binder is composed of the following chemical components: 60 to 65% of core-shell structure potassium sulfate coated gamma-alumina microspheres, 12 to 14% of water glass, 2 to 4% of potassium bicarbonate, 1 to 3% of sublimable urea, 8 to 12% of magnesium potassium silicate fiber, 1 to 2% of boric anhydride, 1 to 3% of a siloxane-terminated polyethylene glycol-polypropylene glycol-block copolymer, 2 to 3% of potassium dihydrogen phosphate, 0.5 to 1.0% of gamma-aminopropyltriethoxysilane, 0.3 to 0.8% of citric acid, 0.5 to 1.0% of tartaric acid, and 0.5 to 1.5% of lithium nitrate. Through precise component selection and function collaborative design, the contradiction that the casting binder adaptive to the intelligent casting island is difficult to balance among room-temperature strength, medium-temperature strength, high-temperature stability and cleaning collapsibility is systematically solved.

The application discloses a lithium-sulfur battery electrolyte suitable for low-temperature working conditions. The lithium-sulfur battery electrolyte comprises an organic solvent, a lithium salt, lithium nitrate additives and an additive, and the additive is 2,2,2-trifluoroethyl-3,3,3-trifluoropropyl diselenide. The electrolyte solves the problem that the charge-discharge performance of the electrolyte applied to the lithium-sulfur battery is poor in a low-temperature environment, improves the energy density of the lithium-sulfur soft package battery and prolongs the cycle life of the lithium-sulfur soft package battery. The preparation method and the lithium-sulfur battery also have the beneficial effects.

The invention provides a high solvation electrolyte, a preparation method thereof and a lithium-sulfur battery, and relates to the technical field of batteries, the electrolyte comprises an ether organic solvent, a lithium salt, lithium nitrate and an amide additive, the volume fraction of the amide additive is 0.5%-50%, the concentration of the lithium salt is 0.5-1.5 mol / L, and the concentration of the lithium nitrate is 0.1-1 mol / L. By introducing the amide additive with high polarity and high donor number, the solubility of the electrolyte to lithium polysulfide is remarkably improved, the redox reaction kinetics among sulfur species is accelerated, and the stable operation of the lithium-sulfur battery under the condition of poor electrolyte is realized; meanwhile, the electrolyte has good compatibility with a lithium metal negative electrode, a stable solid electrolyte interface film can be formed, and the long-term cycling stability of the battery is improved. The preparation process is simple, the cost is controllable, the energy density of the battery is high, the cycle performance is excellent, and the application prospect is wide.

This invention discloses a lithium nitrate-based composite ammonia carrier in the field of refrigeration technology and its application in absorption refrigeration systems. Specifically, the components of the lithium nitrate-based composite ammonia carrier include lithium nitrate, liquid ammonia, lithium bromide, crown ether 12-Crown-4, and sodium lactate. When the lithium nitrate-based composite ammonia carrier is used as an absorbent in an absorption refrigeration system, the synergistic effect of multiple materials improves refrigeration performance while significantly reducing the crystallization concentration of the working fluid under operating conditions. This further reduces the refrigeration temperature, expands the refrigeration temperature range, and improves the system's refrigeration efficiency. Simultaneously, the working fluid formulation does not contain ammonia water, avoiding the disadvantage of requiring a distillation device in ammonia water refrigeration systems and the impact of a certain reflux ratio on refrigeration performance in ammonia water systems. It also overcomes the limitation of water / lithium bromide systems in being unable to produce cold sources below 0°C, significantly improving the system's safety and practicality.

Disclosed is a method of preparing a negative electrode active material which includes (a) dispersing an active material core in a solution containing a surfactant to coat the surfactant on the active material core, (b) adding and dispersing a first precursor, which is bondable with the surfactant by electrostatic attraction, in the solution, (c) adding and dispersing a second precursor, which is bondable with the first precursor by electrostatic attraction, in the solution, (d) preparing a lithium compound precursor by a hydrothermal reaction of the first precursor and the second precursor in the solution, and (e) performing a heat treatment on the lithium compound precursor to thermally decompose the surfactant, and forming a protective layer containing a lithium compound on the active material core, wherein one of the first precursor and the second precursor is at least one selected from lithium hydroxide, lithium oxide, lithium nitrate or lithium sulfate.

A process and system are disclosed for producing lithium oxide from lithium nitrate. In the process and system, the lithium nitrate is thermally decomposed in a manner such that a fraction of the lithium nitrate forms lithium oxide, and such that a remaining fraction of the lithium nitrate does not decompose to lithium oxide. The thermal decomposition may be terminated after a determined time period to ensure that there is a remaining fraction of lithium nitrate and to thereby produce a lithium oxide in lithium nitrate product. The lithium oxide in lithium nitrate product may have one or more transition-metal oxides, hydroxides, carbonates or nitrates added thereto to form a battery electrode. The lithium oxide in lithium nitrate product may alternatively be subjected to carbothennal reduction to produce lithium metal.

The invention relates to the related technical field of lithium batteries, and particularly discloses a high-entropy electrolyte of a lithium metal battery, a preparation method and application, the high-entropy electrolyte comprises lithium fluoride and an organic solvent, and the organic solvent comprises high-polarity ethylene carbonate. The lithium ion battery also comprises lithium bis (oxalato) borate, lithium hexafluorophosphate, lithium bis (trifluoromethanesulfonyl) imide, lithium bis (fluorosulfonyl) imide, lithium difluoro (oxalato) borate and lithium nitrate, wherein the total molar concentration of lithium ions is 1 mol / L; the solvent further comprises methyl ethyl carbonate and dimethyl carbonate. Compared with a low-entropy electrolyte, the high-entropy electrolyte shows excellent regulation and control capability in interface chemistry and solvation chemistry and is compatible with high ionic conductivity and low desolvation potential barrier, the cycling stability of the lithium metal battery is remarkably improved, and the service life of the lithium metal battery is remarkably prolonged.