24 results about "Pseudocapacitance" patented technology

The invention provides a design and application of a power type electrolyte of a double-electric-layer capacitor, and the electrolyte comprises an organic solvent, an electrolyte salt and an additive. Wherein the additive has a general formula structure as shown in Figure 1: the additive has a strong electronegativity part and a strong electropositivity part, a proper chain length is adjusted between the two parts, so that the whole molecular size of the additive can be matched with the micropore diameter of the activated carbon, adsorption and desorption are facilitated, bond breaking is easy, and when part of pseudocapacitance is contributed through oxidation bond breaking, the performance of the additive is improved. According to the present invention, the positive electrode and the negative electrode can be preferentially adsorbed to the positive electrode and the negative electrode so as to form the regulation and the low polarity and high density interface, such that the ion association of the salt ions at the double electrode layer is reduced, the reduction of the liquid phase transmission internal resistance is achieved, the excellent power performance is further represented, and the capacity retention rate in the 125A large-rate cycle (the conventional current is 25A) is increased to 90.1% from 76.3%. In addition, the silicon-containing part formed by broken bonds can also synergistically remove HF generated by hydrolysis of salt anions BF4 <-> in the electrolyte, passivate Al foil and reduce the contact internal resistance of the aluminum conducting bar. The configuration of the additive introduced into the electrolyte is shown in the specification.

The invention discloses a method for preparing a carbon nanotube-based composite microsphere energy storage material through continuous flow. The invention discloses a preparation method for constructing a microspherical composite carbon nanotube supercapacitor material based on microfluidics, and belongs to the technical field of supercapacitors. The method comprises the following steps: acidifying carbon nanotubes to improve dispersibility; the preparation method comprises the following steps: by taking dimethyl silicone oil as an oil phase and acidified carbon nanotube dispersion liquid as a water phase, regulating and controlling a flow rate ratio through a microfluidic technology, and preparing carbon nanotube microspheres with uniform sizes; performing high-temperature pyrolysis to obtain a conductive microsphere framework; the MF-CNTs (at) ZIF-8 composite material is obtained by taking the MF-CNTs (at) ZIF-8 as a carrier, performing in-situ growth of ZIF-8 through a solution impregnation method and then performing secondary pyrolysis. According to the method, accurate and controllable preparation of the carbon nanotube microspheres is realized, and a conductive network of the carbon nanotubes and high specific surface area and pseudocapacitance activity of the ZIF-8 are synergistically exerted by combining in-situ compounding of the ZIF-8. The specific capacitance of the prepared material in a 6 M KOH electrolyte reaches 356.2 F.g <-1 >, the rate capability is excellent, and the capacity retention rate is 81.6% after 3000 cycles. The method has the advantages of controllable steps, mild conditions, low cost, easiness in continuous production and large-scale application potential.

The invention discloses a double-shell high-nickel NCM composite positive electrode material and a preparation method thereof, and the preparation method comprises the following steps: drying and screening high-nickel NCM particles, depositing an Nb2O5 shell layer by using a doped niobium source composite precursor and an oxidizing agent through atomic layer deposition to obtain a precursor material, and depositing an La2O3 shell layer by using a lanthanide series metal source precursor and an oxidizing agent to obtain the double-shell high-nickel NCM composite positive electrode material. And finally performing inert atmosphere heat treatment to obtain a product. According to the material, a double-atomic-layer deposition structure of the inner layer Nb2O5 and the outer layer La2O3 is adopted, a synergistic effect is achieved through chemical bonding and the like, the outer layer La2O3 and Nb2O5 are coordinated to construct a compact interface, and electrolyte permeation is prevented; the crystal lattice matching performance is good, and the interface stress is relieved. The Nb < 5 + > / Nb < 4 + > provides a pseudocapacitance channel, the La2O3 oxygen vacancy promotes Li < + > adsorption, and ion conduction and rate performance are improved. In mechanics and thermology, the double layers share stress, crack is inhibited, electrolyte is isolated at high temperature, and oxygen release is delayed. The material remarkably reduces impedance increase and improves the long-cycle capacity retention rate.

The invention belongs to the technical field of supercapacitors and ion diodes, and discloses a quantum-capacitor-based supercapacitor diode and a preparation method thereof.The quantum-capacitor-based supercapacitor diode takes a quantum capacitor material as a working electrode of an active material, and the quantum capacitor material is a semiconductor material; a exists, so that the difference between the average quantum capacitance when the quantum capacitor material is the positive electrode and the applied voltage is [0V, + aV] and the average quantum capacitance when the quantum capacitor material is the negative electrode and the applied voltage is [-aV, 0V] is at least two orders of magnitude; wherein 0.3 < = a < = 2. The quantum capacitor-based supercapacitor diode is based on a quantum capacitor material, the one-way conductivity of the diode is successfully integrated into the supercapacitor by using the difference between positive and negative quantum capacitors, and the diode can operate in any electrolyte system without depending on pseudocapacitance reaction, so that the quantum capacitor-based supercapacitor diode is suitable for large-scale production. The method can be particularly applied to the fields of ion logic circuits, brain-computer interfaces, humanoid brain calculation and the like.

The invention discloses a copper complex composite carbon electrochemical material as well as a preparation method and application thereof, and belongs to the technical field of electrochemical energy storage materials. The flexible sulfur-containing carboxylic acid ligand and the transition metal are compounded through a hydrothermal or solvothermal method to form the copper complex with a potential pore structure, the copper complex / C composite carbon electrochemical energy storage material is further prepared, and the pseudocapacitance contribution rate of the copper complex / carbon composite material can reach 81% or above. The prepared material is stable in structure and keeps good thermal stability at the temperature of 200 DEG C or below.

The invention belongs to the technical field of battery materials, and particularly relates to a composite positive electrode material, a preparation method thereof, a positive plate and a secondary battery. The composite positive electrode material comprises an N-doped MXene carrier and a positive electrode active material grown in the N-doped MXene carrier in situ, the positive electrode active material comprises metal element doped lithium iron phosphate, and the positive electrode active material has a rice-grain-like morphology structure. In the composite positive electrode material, N-doped MXene serves as a three-dimensional conductive skeleton, pyridine nitrogen and pyrrole nitrogen provide defects due to doping of N atoms, and N-doped MXene serves as a lithium ion adsorption site to improve pseudocapacitance contribution. According to the lithium iron phosphate, grains are refined through metal doping, the b-axis and unit cell volume of the lithium iron phosphate are shortened, and Li-O bonds are increased, so that a lithium ion diffusion channel is shortened, and the diffusion rate is increased. Due to the rice-like morphology structure, the diffusion distance of lithium ions in the positive electrode active material is greatly shortened, and the rate capability is improved.

The invention belongs to the technical field of lithium extraction, and particularly relates to a coated material and a preparation method thereof, a composite electrode and application thereof, and a capacitive deionization lithium extraction system and method. According to the method, a retired NCM positive electrode material is subjected to surface LTO modification to form an NCM (LTO) coated material, then the NCM (LTO) coated material is applied to a capacitive deionization lithium extraction system, and directional enrichment of Li < + > in the salt lake brine is realized through electrochemical driving. According to the technical scheme, material reutilization and lithium extraction functionalization are both considered, on the microstructure, the LTO layer provides stable Ti-O-Li key sites and electrochemical pseudocapacitance behaviors, and a selective lithium intercalation interface is formed; in a macroscopic process, a capacitive deionization system can realize reversible adsorption and desorption through potential control; and in the aspect of resource circulation, direct high-value utilization of retired battery materials and green development of salt lake lithium resources are realized.

The invention discloses a method for preparing a polypyrrole (PPy) aerogel supercapacitor electrode material through ultrasonic-assisted liquid-phase in-situ oxidative polymerization, and belongs to the technical field of energy storage device electrode materials. The PPy aerogel is prepared by adopting an ultrasonic-assisted means, taking ferric chloride as an oxidizing agent, adding a pyrrole monomer into a low-temperature ferric chloride solution, and carrying out liquid-phase in-situ oxidative polymerization. The method is mild in preparation condition, simple in process, controllable in process, low in energy consumption and free of additional additives and complex devices, and is an environment-friendly preparation technology. According to the technology, a pyrrole monomer is promoted to be uniformly dispersed and polymerized in a solution to form compact and uniform PPy particles by utilizing the shearing force and cavitation effect of ultrasonic waves, so that aerogel with a three-dimensional network structure is constructed; the obtained PPy aerogel electrode with the integrated three-dimensional network structure has abundant electrochemical reaction active sites, is beneficial to full play of pseudocapacitance, and is expected to be applied and popularized in the field of supercapacitor electrode materials.

The invention discloses an artificial lorenus kettle electric field sensor and a preparation and application method thereof.The artificial lorenus kettle electric field sensor comprises an upper electrode, a lorenus kettle array, a lower electrode and a metal current collector, and the lorenus kettle array comprises a filling body and a plurality of lorenus kettles in the filling body; each lorenus kettle comprises a kettle tube and a kettle belly which are communicated with each other as well as a lower electrode and a metal current collector which are positioned at the bottom of the kettle belly, the kettle tube and the kettle belly are filled with conductive gel, and the conductive gel is electronegative so as to be used for attracting and gathering positive ions in seawater and transferring and transporting the positive ions to the lower electrode; and the lower electrode and the cations are subjected to pseudocapacitance reaction, so that the output capacitance value is changed to respond to the change of an external electric field. The invention aims to realize underwater weak electric field sensing, solve the difficulty in improving the resolution of the existing mobile electric field sensor, endow an underwater mobile platform with nV / m electric field sensing capability, and provide key technical support for supporting and constructing large-range mobile ocean weak electric field continuous detection.

The invention relates to the technical field of sensors, in particular to a high-sensitivity flexible pressure sensor. The high-sensitivity flexible pressure sensor sequentially comprises a first substrate layer, a first electrode layer, a first thin film layer, a supporting structure layer, a second thin film layer, a second electrode layer and a second packaging layer from top to bottom, a cavity layer is formed in the supporting structure layer, and the height of the cavity layer is the same as that of the supporting structure layer. A microstructure ion electron film layer is arranged on the surface, close to the supporting structure layer, of the second film layer; the first thin film layer and / or the second thin film layer are / is made of an MXene / GO composite material. According to the flexible pressure sensor, the MXene composite material film layer is inserted between the gold electrode and the dielectric layer composed of the cavity / ion electronic film, a pseudocapacitance effect is generated, the charge variation after the flexible pressure sensor is stressed is increased, and the electric response sensitivity of the pressure sensor is improved.

This invention discloses a 3D coral-like FeS₂ / MoS₂ core-shell heterojunction anode material and its preparation method. Through a hydrothermal method combined with a sulfidation process, ultrathin, flexible MoS₂ nanosheets are uniformly wrapped around the surface of a one-dimensional FeS₂ framework, forming a self-supporting core-shell network structure. Utilizing the significant work function difference between the two (5.653 eV for FeS₂ and 3.97 eV for MoS₂), a strong built-in electric field pointing from MoS₂ to FeS₂ is introduced at the interface. This structure significantly improves the material's interfacial electronic conductivity (inducing metallic characteristics at the interface, with a pseudocapacitance contribution rate as high as 65% at 1.0 mV / s) and lithium-ion diffusion kinetics (reducing the diffusion activation barrier to approximately 1.0 eV). After 200 cycles at 0.1 A·g⁻¹, the material maintains a reversible specific capacity of up to 1600 mAh·g⁻¹ and the charge transfer resistance is reduced to 15.2 Ω. This effectively solves the problems of severe volume expansion, serious polysulfide shuttle, and slow reaction kinetics in traditional transition metal sulfide anode materials during the conversion reaction.

The invention relates to a flexible paper-based supercapacitor, and the supercapacitor sequentially comprises the following structures from bottom to top: a positive electrode, an electrolyte layer, and a negative electrode. Wherein the positive electrode sequentially comprises a carbon nanotube paper layer and a poly (benzodifuran diketone)-activated carbon composite layer from bottom to top; the negative electrode sequentially comprises a poly (benzodifuran diketone)-activated carbon composite layer and a carbon nanotube paper layer from bottom to top; the electrolyte layer comprises a water-based diaphragm; and the electrolyte layer is completely divided into an upper part and a lower part by the water-based diaphragm. The carbon nanotubes are introduced into the cellulose paper, so that the cellulose paper has relatively high conductivity and excellent mechanical flexibility, and can be used as a substrate of a self-supporting electrode to load an active substance; the PBFDO and the active carbon (AC) are compounded to form a double-electrode layer-pseudocapacitance synergistic energy storage system, so that the electrochemical performance of the device is remarkably improved. The strategy breaks through the bottleneck of electrochemical performance and mechanical flexibility of the flexible supercapacitor, and has a wide prospect.

The invention discloses a preparation method of manganese dioxide-nitrogen doped carbon quantum dot electrode slurry. Performing hydrothermal reaction on the carbon source substance and the nitrogen source substance; carrying out solid-liquid separation on the hydrothermal product, and removing a precipitation product to obtain a nitrogen-doped carbon quantum dot suspension; dropwise adding a KMnO4 aqueous solution into the NCQD suspension, enabling MnO4 <-> to fully react with functional groups on the surface of the NCQD, and generating a reduction product MnO2 on the surface of the NCQD to obtain a MnO2-coated NCQD suspension; and adding a KOH aqueous solution into the MnO2 (at) NCQD slurry to obtain the MnO2 (at) NCQD electrode slurry. The prepared MnO2-coated NCQD slurry can give full play to the electric double-layer capacitance characteristic of the NCQD and the pseudocapacitance characteristic of MnO2. The reversible redox reaction of the permanganate ion / manganate ion couple can provide additional pseudocapacitance contribution, so that the specific capacity of the electrode slurry is further improved.

The application belongs to the technical field of water treatment and resource, and discloses a kind of antimony-nitrogen co-doped turbo layered carbon-based material for treating fluorine wastewater, preparation and application of capacitive deionization electrode, with supramolecule as precursor, carbon skeleton is formed by pyrolysis and then element doping to prepare antimony-nitrogen co-doped turbo layered carbon-based material as anode material, with carboxyl activated carbon as cathode material, cathode and anode jointly constitute capacitive deionization system.Antimony-nitrogen co-doped turbo layered carbon-based material has layered loose controllable mesoporous structure, rich active sites and excellent specific capacitance caused by typical faradic pseudocapacitance.Antimony-nitrogen co-doped turbo layered carbon-based material capacitive deionization electrode shows excellent fluorine ion adsorption capacity in fluorine-containing wastewater, specifically, fast adsorption rate and large adsorption capacity.The capacitive deionization electrode has good engineering application prospect in actual wastewater treatment.

The invention discloses a self-energized supercapacitor, a preparation method thereof and an application of the self-energized supercapacitor in driving reverse iontophoresis, and belongs to the technical field of reverse iontophoresis and capacitors. The self-energized super capacitor comprises a Co / MXene-Co / LIG anode and a Cu / MXene-Co / LIG cathode. The MXene and Co-MOF composite modified laser-induced graphene electrode solves the problems that a traditional biological capacitor is insufficient in capacitive performance and low in energy storage efficiency, the pseudo-capacitive performance and the charge storage capacity of the electrode are remarkably improved, efficient energy storage and stable release are achieved, and the requirement of counter ion electroosmosis for continuous current is met. Therefore, the method has good application prospect and value in the technical field of reverse iontophoresis and capacitors.

The invention discloses a preparation method and application of a biomass-based carbon negative electrode material for a supercapacitor, and belongs to the technical field of supercapacitors. Bagasse is used as a raw material, impurities are removed through extraction with an ethanol aqueous solution, and a cellulose skeleton is reserved; a uniform spinning solution is formed through the synergistic effect of melamine and graphene oxide, and nitrogen doping and conductive network construction are achieved; a gradient sintering process is adopted, pre-sintering is performed to complete pyrolysis carbonization, high-temperature nitrogen sintering is performed to promote formation of graphite microcrystals, and three-dimensional continuous carbon nanofibers are obtained; phosphoric acid impregnation activation realizes controllable etching to form a mesoporous structure, and meanwhile, an oxygen / phosphorus-containing functional group is introduced. According to the method, a hierarchical pore structure mainly comprising mesopores is constructed, a carbon skeleton modified by an oxygen / phosphorus-containing functional group is formed, the ion transmission rate is improved by the mesoporous structure, the surface wettability is enhanced by the oxygen / phosphorus-containing functional group, and pseudocapacitance is provided. When the material is applied to a supercapacitor, the diffusion limitation of a microporous structure can be overcome, the charge storage capacity is enhanced, high specific capacitance and environmental friendliness are realized, and the performance bottleneck of a traditional carbon material is broken through.

The invention discloses a quantum dot doped NiCo-LDH composite material and a preparation method and application thereof, and belongs to the technical field of supercapacitor electrode materials. NiFe2O4 quantum dots are used as a doping agent, soluble Ni < 2 + > salt, soluble Co < 2 + > salt and trimesic acid are used as raw materials, a solvothermal reaction is performed to obtain an MOF loaded quantum dot precursor, and the MOF loaded quantum dot precursor is used for preparing the NiCo-LDH composite material. And triggering in-situ topological conversion of the MOF framework in the MOF-loaded quantum dot precursor to layered double hydroxides through alkali liquor, and synchronously realizing generation of an ultrathin nanosheet structure and uniform and firm doping of quantum dots. The quantum dot doped NiCo-LDH composite material disclosed by the invention is of a three-dimensional nano flower-shaped structure assembled by NiCo-LDH ultrathin nanosheets, and NiFe2O4 quantum dots are uniformly distributed on the nanosheets, so that the conductivity and the reaction activity of the composite material are effectively improved, and the composite material shows excellent pseudocapacitance performance and rapid ion diffusion capability.

This invention concerns the field of advanced materials and energy storage technology, specifically the process of manufacturing electrodes based on activated carbon (AC) and MXene / CuS for supercapacitor applications. This invention aims to produce electrodes with more optimal electrochemical performance by adjusting the composition ratio of active materials. The manufacturing process begins with the synthesis of MXene / CuS using a direct hydrothermal method with MXene precursors, copper nitrate hydrate, and thioacetamide without the formation of MOF precursors. Next, MXene / CuS is combined with activated carbon through the creation of a slurry consisting of active materials, carbon black, and PVDF, then deposited on a copper foil substrate using the doctor blade method. The active material is made with variations in the ratio of activated carbon and MXene / CuS, namely 75% AC: 25% MXene / CuS, 50% AC: 50% MXene / CuS, and 25% AC: 75% MXene / CuS.The combination of these three materials produces a synergistic effect where activated carbon plays a role in increasing structural stability and cycle stability, MXene increases electron conductivity, and CuS contributes pseudocapacitance through redox reactions, resulting in an AC / MXene / CuS electrode with a simple manufacturing method and increased energy storage capability for supercapacitor applications.

The invention discloses a preparation method of an H-NiCo2S4 (at) C core-shell nanowire electrode material and application of the H-NiCo2S4 (at) C core-shell nanowire electrode material. Firstly, cobalt chloride hexahydrate, nickel chloride hexahydrate, lauryl sodium sulfate and urea are dissolved in deionized water, carbon fiber cloth is placed in the solution to be subjected to a hydrothermal reaction, and then the carbon fiber cloth is taken out, washed and dried. And secondly, putting the loaded NiCo2 (OH) 6 into a sodium sulfide solution, and carrying out hydrothermal reaction, so as to obtain the NiCo2S4 nanowire. Then, the NiCo2S4 nanowire electrode is placed in a deposition solution composed of potassium chloride and a pyrrole monomer, and electrochemical deposition is used; and after deposition is completed, taking out a sample, washing, and sintering at low temperature to obtain the NiCo2S4-coated C nanowire. And finally, carrying out rapid Joule heat treatment on the NiCo2S4 (at) C nanowire, so that the crystallinity of a carbon layer is improved, and the H-NiCo2S4 (at) C core-shell nanowire electrode material is obtained. The H-NiCo2S4 (at) C nanowire is used as a positive electrode to assemble an asymmetric supercapacitor, the capacitance retention rate of the device still reaches up to 93.2%, and the cycling stability of the device is far better than that of most current pseudocapacitance supercapacitors under 15000 cycles of charge-discharge cycles.

The invention provides a preparation method of a sulfonated polyaniline coated Prussian blue analogue derived ferromanganese oxide composite electrode, which comprises the following steps: firstly, synthesizing novel sulfonated polyaniline (SPANi) through copolymerization of aniline and 2-aminobenzene sulfonic acid, so that a sulfonic acid group (-SO3H) is fixed on a PANi main chain to serve as a proton library to provide protons for PANi; the oxidation-reduction reaction is promoted; and the pseudocapacitance characteristic is enhanced. And then further carrying out in-situ polymerization on the SPANi on a manganese iron oxide (MFO) derived from a Prussian blue analogue, so as to prepare the conducting polymer encapsulated bimetallic oxide hollow nanocube composite material SPANi / MFO. Wherein the SPANi not only coats the surface of the MFO, but also fills the cavity of the MFO, and the mass ratio of the SPANi to the MFO is 1: (0.01-0.1). The composite electrode prepared by the invention has the advantages of high capacitance capacity and rate capability and long-term cycle stability, and solves the problem of continuous capacity loss of a conductive polymer-based electrode in the operation of a supercapacitor. According to the invention, the development and application of the functional nano material electrode coated with the conductive polymer for the supercapacitor can be promoted.

The invention provides a quantitative preparation method of a high-capacity self-supporting pseudocapacitance composite membrane electrode, and belongs to the technical field of supercapacitor electrode materials, and the method comprises the following steps: mixing a prepared high-performance pseudocapacitance material alpha-Fe2O3 and a carbon nanotube (CNT) in N-methyl pyrrolidone according to a certain mass ratio, and stirring to form uniformly dispersed slurry; depositing the dispersed slurry on a filter membrane in a vacuum filtration manner to form a wet membrane with a certain thickness; and further drying the wet membrane, and stripping the wet membrane from the filter membrane to obtain the self-supported composite membrane electrode. According to the invention, the mass ratio of the pseudocapacitance material to the CNT conductive skeleton is precisely defined, the key mass ratio window suitable for preparing the high-performance self-supporting composite membrane electrode by the vacuum filtration method is clearly provided for the first time, and the spanning of the membrane forming process from experience exploration to quantitative controllability is realized. And the prepared alpha-Fe2O3 / CNT composite membrane has excellent electrochemical performance and also shows good flexibility at the same time.

The invention provides a composite carbon nanomaterial / polyaniline hollow microsphere, which is prepared by the following steps: dispersing a carbon nanomaterial in an acidic electrolyte aqueous solution of aniline until the final concentration is 0.3-2 mg / L, then adding an organic solvent, and homogenizing to obtain an oil-in-water type Pickering emulsion with the stable carbon nanomaterial, thereby obtaining the composite carbon nanomaterial / polyaniline hollow microsphere with the stable oil-in-water type Pickering emulsion with the stable oil-in-water type Pickering emulsion with the stable oil-in-water type Pickering emulsion. Injecting into an anode chamber of a three-electrode electrolytic bath, standing and splitting phases to obtain a high internal phase emulsion layer; carrying out an electropolymerization reaction on the emulsion system at 8-30 DEG C and at a constant current of 0.1-10 mA, and terminating the reaction when the voltage reaches 1 V vs SHE; and carrying out post-treatment on the obtained reaction liquid to obtain the composite nano carbon material / polyaniline hollow microspheres. According to the preparation method, electrochemical polymerization is adopted to replace traditional chemical oxidation polymerization, use of dangerous oxidizing agents is avoided, the independent composite carbon nanomaterial / polyaniline hollow microspheres are prepared in one step in batches, and the composite carbon nanomaterial / polyaniline hollow microspheres have excellent electron conduction capacity, abundant reaction interfaces, efficient pseudocapacitance characteristics and intelligent stimulation response behaviors.

The invention discloses a composite metal oxide electrode material, a preparation method thereof and a supercapacitor, and belongs to the technical field of capacitors. The preparation method comprises the following steps: dissolving cobalt chloride and trisodium citrate in deionized water to prepare a solution A; dissolving potassium ferricyanide in deionized water to prepare a solution B; dropwise adding the solution B into the solution A, and standing for reaction to obtain a CoHCF precursor; and calcining the CoHCF precursor to obtain the composite metal oxide electrode material. The pseudocapacitance characteristic and cycling stability of the material are effectively enhanced by using the composite metal oxide derived from the Prussian blue analogue, and the release rate of metal ions is controlled by using trisodium citrate as a complexing agent, so that cobalt and iron ions form a more stable complex. In addition, the electrochemical performance of the electrode material is optimized by means of adjusting the ratio of cobalt to iron, the dosage of trisodium citrate, additives, calcination and the like, so that the specific capacitance, the energy density and the cycle life of the supercapacitor are improved.

The application discloses a kind of based on MoS2 / PPy / / Ag@PANI / AC pseudocapacitance behavior induced dual-ion selective HCDI system and application, MoS2 / PPy as Na + Interlayer cathode, Ag modified polyaniline modified activated carbon (Ag@PANI / AC) as Cl-capture anode. In this system, hollow PPy nanotube is anchored by ultrathin MoS2 nanosheet, as a conductive chain to connect loose MoS2 nanoflower, forming a three-dimensional flower chain network. Ag@PANI / AC is synthesized by modifying Ag particles on the 3D electron conducting substrate formed by coupling PANI and AC. MoS2 / PPy / / Ag@PANI / AC realizes excellent adsorption capacity of 25.1 mg·g ‑1 ‑1 ·min ‑1 ), good cycle stability (97.7% retention rate) and improved charge efficiency (56.2%), providing a feasible method for more energy-saving HCDI, which can be used for seawater desalination and water purification desalination.​