CN-121983685-A - Light-assisted self-charging battery based on phenazine anode material and preparation method thereof

CN121983685ACN 121983685 ACN121983685 ACN 121983685ACN-121983685-A

Abstract

The application discloses a light-assisted self-charging battery based on a phenazine anode material and a preparation method thereof, which belong to the technical field of water-based zinc batteries, wherein a phenazine organic electrode with electrochemical activity and light response activity is used as a zinc ion storage material, the self-charging process of the organic electrode is realized under the light-assisted condition by utilizing the electron hole transmission characteristic of nitrogen-containing hybridized organic matters in a safe and environment-friendly water-based electrolyte, the light-assisted effect of solar energy is utilized, photon absorption is carried out by a discharging product of the phenazine organic electrode under the light-assisted effect under the condition of no external power supply to generate electron hole pairs, then the hole is diffused to a hole transmission layer, the electron is injected into the electron transmission layer to form voltage, and the self-charging dezincification process of the electrode is realized by means of charge/carrier separation.

Inventors

BIN DUAN
ZHAO HANG
REN XUEQING
GE RONG
LI RUONAN
LU HONGBIN
YANG BEIBEI

Assignees

南通大学

Dates

Publication Date: 20260505
Application Date: 20251226

Claims (10)

1. The preparation method of the light-assisted self-charging battery based on the phenazine type positive electrode material is characterized by comprising the following steps of: Firstly, preparing a metal negative electrode, wherein the negative electrode is a metal zinc foil and/or zinc sheet, the thickness is 0.01 mm-0.2 mm, and the purity is more than 99.0%; Secondly, preparing a positive electrode material: S1, preparing electrode slurry, namely uniformly mixing 40-90 parts of active materials, 5-30 parts of conductive agents and 1-30 parts of binders according to the weight part ratio to obtain the electrode slurry; S2, preparing an active layer, namely pressing or coating electrode slurry on a basal layer to obtain the active layer; And thirdly, constructing a light-assisted self-charging battery based on a phenazine type positive electrode material by taking a metal negative electrode as a negative electrode, taking a positive electrode material as a positive electrode and taking an aqueous electrolyte as an electrolyte, wherein the aqueous electrolyte is an electrolyte taking water as a solvent, the solute is one or more of zinc sulfate, zinc trifluoromethylsulfonate, zinc perchlorate and zinc acetate, and the concentration of the aqueous electrolyte is 0.5-5 mol.L -1 .
2. The method for preparing a light-assisted self-charging battery based on a phenazine type positive electrode material according to claim 1, wherein the thickness of the metal zinc foil and/or zinc sheet is 0.05mm, and the area is 1X 2 cm 2 .
3. The preparation method of the light-assisted self-charging battery based on the phenazine type positive electrode material, which is disclosed in claim 1, is characterized in that the active material is a phenazine type organic matter, the phenazine type organic matter is one or more of phenazine PNZ, 2-amino-3-hydroxyphenazine, 2, 3-diaminophenazine, 7, 8-dihydroxyphenazine-2-sulfonic acid, one or more of bipyrido [3,2-a:2',3' -c ] phenazine, the conductive agent is one or more of ketjen black, active carbon, mesoporous carbon, graphene, carbon nano tubes, carbon fibers, acetylene black and carbon black, the binder is one or more of polyvinylidene fluoride, polytetrafluoroethylene, water-soluble rubber and cellulose, the substrate layer is one or more of FTO glass, titanium mesh, nickel mesh, molybdenum mesh, copper mesh, aluminum mesh, conductive mesh and stainless steel mesh, and the current collector is one or more of FTO glass, titanium mesh, nickel mesh, molybdenum mesh and copper mesh.
4. A method for preparing a light-assisted self-charging battery based on a phenazine type positive electrode material according to claim 3, wherein the S1 is characterized in that polyvinylidene fluoride is dissolved in an N-methyl-2-pyrrolidone solvent to prepare a polyvinylidene fluoride binder with the mass concentration of 9%, PNZ powder and conductive agent carbon black are added into the polyvinylidene fluoride binder with the mass concentration of 9% to be ground into uniform slurry-like thick liquid, namely electrode slurry, wherein the polyvinylidene fluoride and the carbon black account for 10% of the total weight of the electrode slurry after being mixed.
5. The method for manufacturing a light-assisted self-charging battery based on a phenazine type positive electrode material according to claim 4, wherein the electrode paste with the thickness of 0.1mm is coated on the FTO glass with the thickness of 1X 2 cm 2 in S2, the area mass of the electrode paste is 5-10 mg cm -2 , and the active layer is manufactured by drying 12 h in a 120 ℃ vacuum oven.
6. The preparation method of the light-assisted self-charging battery based on the phenazine type positive electrode material is characterized in that 90-99 parts by weight of the poly (3-hexylthiophene) P3HT material with hole transmission characteristics and 1-10 parts by weight of 9% polyvinylidene fluoride binder are mixed in S2, an N-methyl-2-pyrrolidone solvent is used as a dispersing agent, the mixture is ground into uniform slurry-like thick liquid, the uniform slurry-like thick liquid is coated on an active layer, the active layer is placed in a 120 ℃ vacuum oven and dried 12 h to form a hole transmission layer, and the 1X 2 cm 2 FTO glass, the active layer and the hole transmission layer are prepared into the positive electrode material with a sandwich structure according to a bottom-up assembly method.
7. The method for preparing the light-assisted self-charging battery based on the phenazine type positive electrode material, as set forth in claim 1, is characterized in that in S2, the electrode slurry is rolled into a membrane with the thickness not exceeding 1mm on a roll press, the membrane is dried and cut into an electrode membrane with the size of 0.6-1 cm multiplied by 0.6-2 cm, and then the electrode membrane is pressed on a current collector to obtain the positive electrode material.
8. The preparation method of the light-assisted self-charging battery based on the phenazine type positive electrode material, which is disclosed in claim 6, is characterized in that the light-assisted self-charging battery based on the phenazine type positive electrode material is constructed by taking the positive electrode material as a positive electrode, taking a metal negative electrode as a negative electrode, injecting 2 mol.L -1 zinc sulfate electrolyte and taking a quartz sesame seed cake as an electrolyte.
9. The method for preparing the light-assisted self-charging battery based on the phenazine type positive electrode material, which is disclosed in claim 7, is characterized in that a 2032 button type water-based zinc battery, namely the light-assisted self-charging battery based on the phenazine type positive electrode material, is assembled by taking the positive electrode material as a positive electrode, taking a metal negative electrode as a negative electrode and taking 2 mol.L -1 ZnSO 4 as an electrolyte.
10. A light-assisted self-charging battery based on a phenazine type positive electrode material produced by the production method according to any one of claims 1 to 9, characterized in that the light-assisted solar light is derived from a xenon lamp simulation.

Description

Light-assisted self-charging battery based on phenazine anode material and preparation method thereof Technical Field The invention belongs to the technical field of water-based zinc batteries, and particularly relates to a light-assisted self-charging battery based on a phenazine anode material and a preparation method thereof. Background Along with the rapid development of portable electronic devices, sensing networks and distributed energy systems, higher requirements are put on novel electrochemical energy devices with energy acquisition and storage functions. The traditional secondary battery needs to be charged by an external power supply, and has the problems of energy acquisition and storage separation, low system integration level, high maintenance cost and the like in the use process, so that the application requirements in a long-term, unattended or weak energy environment are difficult to meet. Therefore, an integrated self-charging battery system capable of achieving energy conversion and storage is becoming a research hotspot. In the background of the increasing shortage of traditional fossil energy, solar energy is receiving widespread attention as a clean, renewable and widely available energy source. Especially in remote areas or severe environments, the battery cannot be charged in time due to limited power grid construction, and abundant solar energy becomes an inexhaustible energy source. In recent years, how to effectively couple the solar energy acquisition, conversion and electrochemical energy storage processes and construct an integrated device with both photovoltaic response and energy storage functions has become an important research direction in the field of electrochemical energy storage. The nitrogen-containing heterocyclic phenazine derivative is used as a typical organic photoelectric functional material, has the characteristics of stable molecular structure, strong electron donor capability, excellent hole transmission performance and the like, and the molecular structure is rich in reversible redox active groups such as C=N and the like, so that sufficient reaction sites can be provided for intercalation/deintercalation of Zn 2+, and higher electrochemical capacity can be realized. Meanwhile, the phenazine material has certain response capability to visible light, so that the phenazine material has potential feasibility in the application of the phenazine material in a light-assisted electrochemical energy storage system. Therefore, the material with both organic light response and zinc ion storage is effectively introduced into a water system zinc battery system, and a stable and efficient light-assisted self-charging function is realized through light-assisted effect, so that the material has important significance for realizing the integrated self-charging battery for energy conversion and storage. Disclosure of Invention The invention provides a light-assisted self-charging battery based on a phenazine type positive electrode material and a preparation method thereof, which can realize self charging without connecting an external power supply, and can directly collect solar energy and store the energy in a bulk material for use by integrating a solar battery power generation technology and a secondary battery energy storage technology in the same system by integrating the solar battery power generation technology and the secondary battery energy storage technology, so as to solve the technical problems that the existing energy acquisition and storage are separated, the system integration level is low, the maintenance cost is high, the application requirements of the existing energy storage device in a long-term unattended or weak energy environment are difficult to meet, and the like. The application aims to provide a light-assisted self-charging battery based on a phenazine anode material and a preparation method thereof, and designs a phenazine organic electrode material with photoelectrochemical activity, wherein under the condition of no external power supply, a discharge product absorbs photons to generate electron hole pairs, then the electron hole pairs are diffused to a hole transmission layer, electrons are injected into the electron transmission layer to form voltage, and the self-charging dezincification process of an electrode is realized by means of charge/carrier separation. In order to achieve the above purpose, the present application is realized by the following technical scheme: A preparation method of a light-assisted self-charging battery based on a phenazine type positive electrode material comprises the following steps: Firstly, preparing a quinone polymer water-based zinc battery anode material: Firstly, preparing a metal negative electrode, wherein the negative electrode is a metal zinc foil and/or zinc sheet, the thickness is 0.01 mm-0.2 mm, and the purity is more than 99.0%; Secondly, preparing a positive electrode material: S1, preparing elec