522 results about "Amorphous carbon" patented technology

The invention discloses a high-initial-efficiency fast-charge graphite composite material and a preparation method thereof, the composite material is of a core-shell structure, the core is graphite, and the shell is lithium sulfonate / lithium molybdate and an amorphous carbon coating layer thereof; the mass ratio of the shell is 5-15 wt% according to the mass ratio of the composite material being 100%. The preparation method comprises the following steps: adding a molybdenum compound into a solvent to prepare a solution, adding graphite oxide, an inorganic lithium salt and a carbon nanotube conductive solution, reacting for 2-12 hours at the temperature of 50-120 DEG C, filtering, carbonizing filter residues to obtain a lithium molybdate conductive agent coated graphite material, and depositing a lithium sulfonate derivative on the surface of the lithium molybdate conductive agent coated graphite material by an atomization method to obtain the lithium molybdate conductive agent coated graphite material. The electron and ion conductivity of the material can be improved, and the rate and the first efficiency of the material can be improved.

The invention relates to the technical field of powder metallurgy materials, and discloses rare earth microalloyed ultrahigh-strength high-toughness hot work die steel and a preparation method thereof.The die steel is prepared from 4Cr5MoSiV1 pre-alloyed powder, rare earth hydride, boron carbide and porous amorphous carbon powder loaded with a nickel catalyst. The preparation method comprises the steps of material mixing, sheath packaging, graded dynamic reaction thermal devolatilization, hot isostatic pressing densification and heat treatment, in the graded dynamic reaction thermal devolatilization, active hydrogen generated by decomposition of rare earth hydride is used for reducing oxide on the surface of powder, and nickel catalyzed carbon powder is used for capturing water vapor at low temperature to generate CO to be discharged. An oxide film on the surface of the powder is thoroughly removed through in-situ chemical reaction, original particle boundaries are eliminated, meanwhile, a nano strengthening phase with high thermal stability is generated in situ, and the high-temperature strength, impact toughness and tissue compactness of the die steel are remarkably improved.

A method for manufacturing composite cathode particles based on a dual-coated ternary oxide for an electrochemical battery by a high speed rotation includes the steps of: placing a plurality of large NCM (lithium nickel manganese cobalt oxide) particles and a glass phase material into a first mixer for stirring by a first high speed rotation to form a plurality of glass-phase-layer-contained NCM particles; then mixing a plurality of small LLZO particles and the glass-phase-layer-contained NCM particles by a second high speed rotation of a second mixer to form a plurality of composite NCM particles; and then mixing the composite NCM particles, a plurality of first carbon nanotubes and a plurality of nanoscale amorphous carbons to form a plurality of carbon-material-contained positive electrode particles.

The invention provides a battery, which comprises a negative plate and an electrolyte, the negative plate comprises a negative active material, the negative active material comprises a silicon-carbon composite material, the silicon-carbon composite material comprises a silicon-carbon core and a shell coated on the surface of the silicon-carbon core, the shell comprises an amorphous carbon layer and a graphene layer, and the amorphous carbon layer is coated on the surface of the silicon-carbon core. The amorphous carbon layer is located between the silicon carbon inner core and the graphene layer; in the Raman spectrum of the silicon-carbon composite material, the I2D / IG value k is more than or equal to 0.4 and less than or equal to 0.8; the electrolyte comprises acetic acid 2, 2-difluoroethyl ester, and the mass percentage m% of the acetic acid 2, 2-difluoroethyl ester in the electrolyte meets the condition that m% is larger than or equal to 5% and smaller than or equal to 65%, and k / m meets the condition that k / m is larger than or equal to 0.008 and smaller than or equal to 0.1. According to the battery, the amorphous carbon layer buffers expansion, and the graphene layer conducts electricity and obstructs; in the electrolyte, acetic acid 2, 2-difluoroethyl ester and graphene cooperate to construct a self-adaptive SEI film; parameter optimization is matched to enhance structural stability and ion transmission, and the performance is comprehensively improved.

The invention discloses a negative electrode coating material production method, a negative electrode coating material and a lithium ion battery, and relates to the technical field of lithium battery material preparation, and the negative electrode coating material production method comprises the following steps: carrying out functional modification on a covalent bond of a carbon nanotube to obtain a functional carbon nanotube grafted with a specific functional group; dispersing the composite material in an organic solvent, adding a coating precursor and a dispersion binder to form coating slurry, adding a silicon-based negative electrode matrix, and performing spray drying to obtain a pre-coated composite material; a three-dimensional gradient composite coating structure is formed sequentially through low-temperature dehydration crosslinking, medium-temperature pre-carbonization and catalysis and high-temperature graphitization and densification treatment, an amorphous carbon layer, a functionalized carbon nanotube reinforced composite layer and a highly-graphitized outer surface layer are arranged from inside to outside, the thickness of the material coating layer is 50-200 nm, the volume resistivity is smaller than or equal to 5 * 10 <-3 > omega.cm, the first coulombic efficiency at 0.1 C is larger than or equal to 85%, and the specific surface area of the material coating layer is larger than or equal to 10%. And the capacity retention ratio after 500 cycles is greater than or equal to 80%, so that the material is suitable for high-performance lithium ion battery negative electrodes.

The application relates to the technical field of lithium ion battery materials, and discloses a low-expansion silicon-carbon material and a preparation method thereof. The low-expansion silicon-carbon material has a porous core-shell structure, the inner core is graphene / metal-doped amorphous carbon-coated nano silicon, and the shell is boron-doped amorphous carbon. The preparation method comprises the following steps: firstly, a silicon oxide compound, a graphene oxide solution and an organic metal polymer are added into an organic carbon source solution, spray drying is carried out, and an oxidized graphene-coated metal-doped silicon oxide precursor material is obtained through reaction; secondly, a mixed gas of a boron source gas and argon is introduced into the oxidized graphene-coated metal-doped silicon oxide precursor material, and a boron-doped silicon-carbon composite material is obtained through reaction; and thirdly, the boron-doped silicon-carbon composite material is soaked in a hydrofluoric acid solution, and the low-expansion silicon-carbon material is obtained after drying. Through the technical scheme, the problems of high expansion and poor rate performance of the silicon-carbon material in the related art are solved.

The invention discloses a high-entropy ferric pyrophosphate sodium ion battery positive electrode material and a preparation method thereof, and belongs to the field of battery positive electrode materials. The chemical formula of the positive electrode material is Na4Fe3-aMa (PO4) 2P2O7 (0.05 < = a < = 0.5), M is a metal element and comprises at least five of cobalt, magnesium, zirconium, zinc, aluminum, molybdenum, copper, manganese, nickel, calcium and chromium, the high-entropy ferric sodium phosphate pyrophosphate battery positive electrode material is spherical, and the surface of the high-entropy ferric sodium phosphate pyrophosphate battery positive electrode material is coated with an amorphous carbon layer. The preparation method adopts a sol-gel method and comprises the following steps: mixing an iron source, a doped metal source, sodium pyrophosphate, ammonium dihydrogen phosphate and citric acid monohydrate according to a stoichiometric ratio, stirring, gelatinizing and drying to obtain xerogel, and calcining through a two-stage hydrogen-argon mixed gas to obtain the iron-doped metal-doped sodium pyrophosphate / citric acid composite material. The crystal structure is optimized by means of the high-entropy synergistic effect, the electron conductivity and the Na < + > diffusion rate are improved, and the industrial adaptability of the spherical morphology and the structural stability of carbon coating are combined.

The present application relates to the technical field of secondary batteries. Disclosed are a negative electrode material, a negative electrode sheet and a secondary battery. The negative electrode material comprises natural graphite and amorphous carbon filled into pores of the natural graphite. The particle hardness of the negative electrode material is 0.28-0.4 GPa, and the elastic modulus thereof is 7.0-8.0 GPa. When the compaction density of a tablet of the negative electrode material is 1.5 g / cm3 to 2.0 g / cm3, the orientation OI value of the tablet of the negative electrode material is y, and 4<y≤11. When the negative electrode material is applied to a secondary battery, the initial coulombic efficiency and the cycling stability can be significantly improved.

The embodiment of the invention provides a silicon-based composite material and a preparation method thereof, a negative plate and a battery. The silicon-based composite material comprises a silicon-containing core body and a coating layer coating at least part of the surface of the silicon-containing core body. The coating layer comprises an amorphous carbon material, and the interlayer spacing of the amorphous carbon material is 0.305 nm to 0.325 nm. According to the silicon-based composite material, the coating layer containing the amorphous carbon material with the specific interlayer spacing is formed on the surface of the silicon-containing core body, so that damage of silicon to an electrode material in the cyclic charging and discharging process is relieved, and the structural stability and the electrochemical performance of the silicon-based composite material are improved.

The method comprises the following steps: by making a subtraction method, based on the fact that amorphous carbon has lower reaction activation energy than crystalline graphite, carrying out a Boudouard reaction on carbon and carbon dioxide at a high temperature of 705-825 DEG C to generate carbon monoxide, and selectively oxidizing to remove high-activity amorphous carbon on the surface of graphite precursor fine powder or at an open grain boundary; the technical purposes of improving the graphitization degree of the graphite precursor fine powder and improving the gram volume and the first effect of the graphite precursor fine powder are achieved; before high-temperature carbon dioxide is adopted for selective corrosion treatment, the graphite precursor fine powder is in a micro-compaction state, controllable selective corrosion reaction can be carried out on the graphite precursor fine powder by controlling the use amount of carbon dioxide, the reaction temperature and the pressure, and the powder basically does not generate a fresh active surface after simple crushing; the uniformity of the SEI film growing on the surface of the artificial graphite powder during subsequent manufacturing of the lithium battery is improved; according to the technical scheme, the energy consumption is low, and the production efficiency is high.

The present invention relates to a negative electrode for a lithium secondary battery, a manufacturing method thereof, and a lithium secondary battery including the same, the negative electrode including: a crystalline carbon layer; an amorphous carbon layer having a network structure formed on the crystalline carbon layer, and formed of disordered and non-crystalline carbon atoms; and lithium ions or lithium carbide compounds embedded in the amorphous carbon layer, and lithium metal electrodeposited around the lithium ions or lithium carbide compounds, wherein the amorphous carbon layer includes a carbon defect structure formed of electron-deficient carbon atoms, the crystalline carbon layer includes a plurality of carbon fibers, and when the amorphous carbon layer is analyzed by XPS, a ratio of a peak intensity originating from the carbon defect structure to a peak intensity originating from carbon having an sp 2 hybrid structure is 0.3 or more. The negative electrode of the present invention can provide a lithium secondary battery having a higher energy density, and can fundamentally prevent an electrolyte decomposition reaction and lithium dendrite formation.

To provide a structure having a dense carbon film. [Solution] A structure comprising a conductive substrate and a carbon film on the surface of the conductive substrate, wherein the carbon film includes an aggregate of carbon nanoparticles, and the carbon nanoparticles are made of amorphous carbon.

The invention discloses a negative electrode active material particle and a preparation method thereof, a negative electrode plate and a battery. The negative electrode active material particle includes: an inner core including a carbon material; the transition layer comprises graphitized carbon, and the transition layer is located on the surface of the inner core; the amorphous carbon layer is positioned on the surface of the transition layer; wherein the coating rate of the amorphous carbon layer on the surfaces of the negative electrode active material particles is 80%-100%. The negative electrode active material particle has good electrochemical performance and cycling stability, is applied to a battery, and is beneficial to improving the energy density and the cycling performance of the battery.

The invention relates to an amorphous carbon material and a preparation method thereof, a negative electrode and a sodium ion battery. The value of ID / IG of a Raman spectrum of the amorphous carbon material is 0.93 to 1.2; the value of 100 * Lc * La / d002 of the amorphous carbon material is 1010 to 1200. When the amorphous carbon material is used as the negative electrode of the sodium-ion battery, the sodium-ion battery has relatively high capacity and first coulombic efficiency. The preparation method comprises the following steps: (1) performing crushing, purification treatment and pre-oxidation treatment on raw coal to obtain pre-oxidized coal; (2) mixing and extruding the pre-oxidized coal and asphalt to obtain a coal / asphalt mixture; and (3) carrying out carbonization treatment on the coal / asphalt mixture. The method is low in preparation cost and beneficial to large-scale production.

The application relates to a high-cycle-stability lithium iron phosphate positive electrode material and a preparation method thereof. 1‑x‑y V x Al y PO4 of an olivine structure, wherein 0.02<=x<=0.05 and 0.01<=y<=0.04; the lithium iron phosphate positive electrode material core surface further contains a gradient coating layer, the coating layer close to the core is a mixed layer of nano boron carbide and amorphous carbon, and the outer layer is a pure amorphous carbon layer. Through double-layer coating and addition of the components Al and V in the core, the cycle performance and the electrochemical performance are effectively improved, the compaction density of the lithium iron phosphate positive electrode material is 2.61-2.81 g / cm 3 , the initial discharge specific capacity is 163.1-169.3 mAh / g at 0.1 C, and the capacity retention rate is 94.1-95.8% after 1000 cycles.

The application discloses a method for recovering graphite from carbon residues of waste lithium ion batteries and regenerated graphite, and relates to the technical field of lithium battery recycling. The carbon residues of waste lithium ion batteries after acid leaching are subjected to heat treatment, in the heat treatment process, the inorganic impurities and organic impurities in the carbon residues can be dissociated into smaller particles, which is convenient for removal in subsequent processes; the pyrolysis carbon residues obtained through heat treatment are subjected to scattering treatment and screening to obtain small particle materials, and the excess large particle impurities are removed; then, through grinding and grading, graphite coarse powder with a particle size Dv50 of 12-15 mu m is obtained, and since the ash impurities are mainly concentrated in the fine powder, the ash can be effectively removed after grading. The heat treatment-scattering, screening-grinding and grading linkage technical means proposed in the application does not need to add additional chemical reagents, but only relies on several physical technical means, which not only can achieve the effect of removing ash impurities, but also can effectively remove amorphous carbon, and the method is simple, easy to operate, safe and environment-friendly.

The invention discloses a silicon-oxygen-carbon-based negative electrode material and a preparation method thereof, and belongs to the technical field of lithium battery negative electrode materials, and the preparation method comprises the following steps: (1) mixing alcohol, water and acid to prepare an acid solution with the pH value of 2-4, adding organosiloxane into the acid solution, and stirring in a water bath to obtain a siloxane hydrolysate; (2) adding a pyrene compound into the siloxane hydrolysate, and carrying out ultrasonic treatment; (3) adding alkali, stirring in a water bath at 20-50 DEG C for 1-3 hours, and then freeze-drying to obtain a precursor of SiOC; and (4) placing the precursor in an atmosphere furnace, sintering in an argon atmosphere, and naturally cooling to obtain the modified negative electrode material SiOC. The amorphous carbon content of the prepared SiOC is increased, on one hand, the electronic conductivity of the SiOC can be improved, and on the other hand, volume expansion in the charging and discharging process can be relieved.

The present disclosure discloses a high-efficiency silicon heterojunction (HJT) solar cell and a manufacturing method thereof, and belongs to the technical field of solar cells. In the solar cell of the present disclosure, an N-type crystal silicon wafer is successively provided with a thin SiO2 layer, a hydrogenated amorphous carbon silicon oxide film layer, a carbon doped SiO2 layer, an amorphous silicon doped N-type layer, a TCO conductive layer, and an electrode on a front surface; and successively provided with a thin SiO2 layer, a hydrogenated amorphous carbon silicon oxide film layer, a carbon doped SiO2 layer, an amorphous silicon doped P-type layer, a TCO conductive layer, and an electrode on a rear surface. The amorphous silicon doped P-type layer includes a lightly boron doped amorphous silicon layer and a heavily boron doped amorphous silicon layer.

The invention relates to the technical field of batteries, and provides a battery monomer, a battery device and a power utilization device.The battery monomer comprises an electrolyte and an electrode assembly, the electrode assembly comprises a positive pole piece and a negative pole piece, and the negative pole piece comprises a negative current collector and a negative active material layer arranged on at least one side of the negative current collector; the negative electrode active material layer comprises carbon-coated graphite, and amorphous carbon is arranged on the surface of the carbon-coated graphite; the electrolyte comprises a solvent, and the solvent comprises linear carboxylic ester; in the first direction, the size of the negative electrode active material layer is larger than 130 mm, and the first direction is parallel to the gravity direction. According to the present invention, the carbon-coated graphite is adopted as the negative electrode active material, and is matched with the electrolyte containing the linear carboxylic ester, such that the problems of electrolyte local aggregation and low heat dissipation efficiency in the high battery cell can be effectively improved so as to prolong the cycle life of the battery monomer.

The invention relates to composite carbon coated ferric sodium pyrophosphate, a preparation method and a sodium ion battery. The preparation method comprises the following steps: performing first mixing on a sodium source, an iron source and a phosphorus source in water to obtain a precursor solution; carrying out second mixing reaction on the precursor solution, a first additive and a second additive to obtain precursor sol; adding a carbon source dispersion liquid into the precursor sol to obtain a composite precursor sol; performing vacuum drying; sintering in an inert atmosphere to obtain composite carbon-coated ferric sodium pyrophosphate; a carbon source in the carbon source dispersion liquid comprises a carbon nanotube and graphene oxide; the first additive comprises monobasic acid and / or polybasic acid; the second additive comprises a monohydric alcohol and / or a polyhydric alcohol. On the basis of a sol-gel process, a composite carbon coating layer jointly formed by carbon nanotubes, reduced graphene oxide and amorphous carbon is formed on the surface of sodium ferric phosphate pyrophosphate in situ, so that the rate performance and the cycle performance of sodium ferric phosphate pyrophosphate are synchronously improved.

The invention discloses a multi-dimensional carbon structure negative electrode material, and belongs to the field of lithium battery materials. The multi-dimensional carbon structure negative electrode material comprises a core layer, a middle layer and a shell layer which are sequentially arranged from inside to outside, the core layer comprises a three-dimensional conductive skeleton loaded with active particles; the material of the middle layer comprises amorphous carbon; the material of the shell layer comprises a metal oxide. The negative electrode material with the core-shell structure is obtained by preparing the multi-layer structure containing the core layer, the middle layer and the outer layer and optimizing the material of each layer. The outer layer and the middle layer can effectively inhibit disordered deposition of metal lithium on the outer surface, active particles of the core layer serve as lithium-loving sites to guide lithium to be nucleated and deposited in fiber coils preferentially, the uniformity and directionality of lithium deposition can be improved through cooperation of the three layers, and therefore growth of lithium dendrites is effectively inhibited; and the safety performance and the cycling stability of the prepared battery are enhanced.

This invention provides a silicon-carbon composite material, comprising a core and a carbon layer coating the surface of the core. The core includes a graphite skeleton, amorphous carbon filled within the graphite skeleton structure, and silicon material uniformly distributed within the amorphous carbon. The silicon-carbon composite material has only pores with a diameter less than or equal to 50 nm, and no pores larger than 50 nm. The small pore size of this silicon-carbon composite material effectively reduces the contact area between the silicon material and the electrolyte, minimizing side reactions and extending battery life. Simultaneously, the uniform dispersion of silicon material around the graphite skeleton without agglomeration allows the graphite skeleton to effectively mitigate the volume expansion and contraction of the silicon material, improving the structural stability and energy density of the composite material. This invention also provides a method for preparing the silicon-carbon composite material and a lithium-ion battery containing the silicon-carbon composite material.

The application belongs to the field of sodium ion battery cathodes, and particularly relates to a Na4Fe 3‑x M x (PO4)2P2O7 / C composite material, comprising active nanoparticles and a surface coating layer of the active nanoparticles; the active nanoparticles have a chemical formula of Na4Fe 3‑x M x (PO4)2P2O7, wherein M is at least one of Ni, Co, Mn, Cu, Zn, Mg, Ti, Sn, Zr and Ca; x is 0.03-0.3; and the coating layer comprises amorphous carbon and phenolic resin. The application also relates to a preparation method and application of the material. The material can improve the capacity, high rate and long-term cycle performance of the material based on the combination of components and structures.

This invention discloses a graphite part, its preparation method, its application, and its evaluation method. The graphite part includes a graphite substrate and an amorphous carbon coating disposed on the surface of the graphite substrate. The graphite part satisfies Q=Y×Δρ×(Ra^0.5) / d≥4.0: By coupling the coating's energy dissipation capacity (Y), the substrate's gradient densification degree (Δρ), the substrate's surface morphology characteristics (Ra^0.5), and the coating's geometric constraints (d) to a single parameter Q, quantitative characterization and engineering controllability of the crack resistance performance of the amorphous carbon coating during high-temperature carbonization are achieved. In the graphite part prepared when Q≥4.0, the amorphous carbon coating does not crack or shed powder, which is beneficial for its application in ion implanters.

The invention provides a waste lithium iron phosphate direct regeneration method based on a 1, 10-phenanthroline organic lithium system and application of the waste lithium iron phosphate direct regeneration method in a battery, and relates to the technical field of positive electrode material repair and regeneration. The method comprises the following steps: reacting in an organic lithium reagent consisting of 1, 10-phenanthroline lithium and tetrahydrofuran to realize the supplement of active lithium and the recovery of lithium iron antiposition defects, and carbonizing organic matters remained on the surface of lithium iron phosphate while recovering lithium iron phosphate crystal lattices by virtue of roasting; and an amorphous carbon layer wrapping the lithium iron phosphate particles is formed so as to improve the conductivity of the lithium iron phosphate material and further improve the electrochemical performance of the battery. Compared with traditional pyrogenic process regeneration and wet process regeneration, the direct regeneration method provided by the invention has the advantages of simple operation and low energy consumption, has certain competitiveness in economic benefit, does not need high-pressure steam operation, and is high in safety.

The invention provides a microcrystalline graphite composite material and a preparation method thereof, and relates to the technical field of lithium batteries, the microcrystalline graphite composite material comprises a core layer, a transition layer coated on the surface of the core layer, and a coating layer coated on the surface of the transition layer; the core layer comprises first microcrystalline graphite; the transition layer comprises second microcrystalline graphite and first amorphous carbon which are mixed with each other; the coating layer comprises second amorphous carbon; the second microcrystalline graphite is nitrogen-doped microcrystalline graphite, and the particle size of the second microcrystalline graphite is smaller than that of the first microcrystalline graphite. According to the composite material, a nitrogen-doped small-particle-size transition layer is used for constructing a gradient structure, stress is relieved, strength is enhanced, crushing and stripping are inhibited, and the compaction density is improved; and meanwhile, conductive transmission is optimized, and circulation and rate capability are synergistically improved.

This invention relates to a lithium metal electrode and a method for manufacturing the same. The lithium metal electrode of this invention includes a current collector; a metal layer located on at least one side of the current collector and comprising a lithium alloy; and a protective layer located on the metal layer, the protective layer comprising amorphous carbon and silicate clay minerals having a 2:1 crystal structure.

The invention relates to the technical field of batteries, in particular to a negative electrode material and a preparation method thereof, a silicon-containing negative electrode plate and a battery. The negative electrode material comprises an inner core, a shell and a bridging layer arranged between the inner core and the shell, the inner core comprises a surface modified nano silicon material; the shell comprises a graphitization-like carbon layer; the bridging layer sequentially comprises an amorphous carbon layer and a silicon carbide layer from the inner core to the outside. Compared with the prior art, the negative electrode material provided by the invention has a unique core-bridge-shell structure, and the bridging layer is connected with the silicon core and the carbon shell through chemical bonding, so that the volume expansion is inhibited, the interface stability is improved, the lithium ion transmission is enhanced, and the performance of the battery is further improved.

The invention discloses a method for constructing a high-conductivity / heat-conductivity carbon material based on microwave induction, and belongs to the technical field of nano carbon material synthesis. According to the method, methane and auxiliary gas are introduced into a variable-frequency microwave vapor deposition system, and the microwave frequency is dynamically regulated and controlled within the range of 2.43-7.5 GHz, so that the methane cracking rate, plasma energy distribution and deposition kinetics are regulated; controllable deposition of multi-scale and multi-morphology composite carbon structures (carbon nanotubes, graphene-like and amorphous carbon) on the surface of a single substrate under the constant temperature condition is achieved, and therefore the microstructure and the electromagnetic response performance are optimized. According to the method, the frequency conversion microwave technology is introduced into a methane cracking deposition system for the first time, atomic-scale controllable deposition of the carbon material is achieved, complex temperature gradient control is avoided, and the obtained carbon-based material has high electric conductivity / heat conductivity, wide-frequency-band shielding effectiveness and excellent structural stability.

This invention discloses a dodecahedral Co-C / LDH composite electrode material loaded with bismuth nanoparticles, its preparation method, and its application. The composite material has a dodecahedron formed by a Co-C amorphous carbon layer as the core, an outer NiCoAl-LDH layer, and a surface loaded with Bi nanoparticles, forming a unique three-dimensional core-shell structure. Co-C / NiCoAl-LDH@Bi is assembled as the anode and AC as the cathode. The Co-C / NiCoAl-LDH@Bi / / AC device improves the Cl... ‑ Storage capacity, electrochemical reaction kinetics, and long-term cycling stability expand the application boundaries of LDH materials in the field of high-performance CDI anodes, providing high-performance material support for the practical application of CDI technology in seawater desalination. It is expected to promote the development and implementation of low-cost, large-scale seawater desalination systems and has important industrial application prospects and environmental value.