The invention discloses a metal zinc negative electrode with a uniform mesoporous structure coating and a preparation method and application thereof, belonging to the technical field of aqueous zinc ion batteries. The metal zinc negative electrode comprises a zinc negative electrode and a clay slurry layer, and is prepared by pre-embedding zinc. The raw material powder of the clay slurry includes1-20wt% of polyvinylidene fluoride and 80-90wt% of clay material. The aqueous zinc ion battery negative electrode coating presented in the invention can play a role of a protective layer, isolate thedirect contact between the zinc negative electrode and the electrolyte to a certain extent, reduce the side reaction between the electrode and the electrolyte and improve the cycle stability. The layered porosity of the material itself can prevent dendrites from being generated and penetrating a diaphragm in the cycle process, alleviate the volume expansion of the negative electrode, reduce the occurrence of short circuit of the battery and improve the safety performance.

Metal zinc negative electrode with uniform mesoporous structure coating and preparation method and application thereof

The invention provides a zinc negative electrode with a zinc ion conductivity interface modification layer, a battery and a preparation method, and belongs to the field of aqueous zinc battery metal zinc cathodes. The preparation method comprises: in air atmosphere, pre-constructing an interface modification material M on a base membrane; in a soaking environment by a wetting liquid, the interfacemodification material M layer on the base film being in close contact with the metal zinc to form the short-circuit primary battery, and the contacted interface modification material M and the metalzinc having spontaneous redox reaction, to make the interface modification material convert to ZnxM with zinc ion conductivity from M, meanwhile, transferring the interface modification material layerto the surface of the metal zinc negative electrode from the base film, and finally, obtaining the metal zinc negative electrode with the ZnxM interface modification layer with zinc ion conductivityon the surface. The ZnxM interface modification layer with the zinc ion conductivity can effectively inhibit dendritic crystal growth of a zinc negative electrode during charging and discharging of azinc battery, so that the interface stability of a metal zinc negative electrode is improved, and meanwhile, the cycling stability of a water-based zinc battery is improved. The method is simple and has a good actual effect.

Zinc negative electrode with zinc ion conductivity interface modification layer, battery and preparation method

The invention provides a zinc ion battery and a manufacturing method thereof. The zinc ion battery is provided with: a negative electrode, a positive electrode and electrolyte, wherein the electrolyteis ionic liquid, and the ionic liquid comprises coordination cations formed by coordination of metal zinc and organic Lewis base; and anions. The zinc ion battery is safe, environment-friendly and low in cost, the negative electrode of the zinc ion battery is not easy to grow zinc dendrite, the gassing side reaction is less in the electrolyte, the specific capacity is high, and the cycle performance at a lower temperature is good.

Zinc ion battery and manufacturing method thereof

The invention discloses water-based zinc ion battery colloidal electrolyte, and a preparation method and an application thereof. The colloidal electrolyte material is formed by adding a clay materialto liquid electrolyte and uniformly mixing the same. The preparation method comprises the following steps: adding the clay material to conventional liquid electrolyte, thoroughly mixing the same understirring, and performing ageing to obtain uniform and stable colloidal electrolyte. The colloidal electrolyte prepared by the preparation method disclosed by the invention has higher ionic conductivity than liquid electrolyte, a colloidal zinc ion battery has excellent performance, good safety, stable performance and higher specific capacity, maintains excellent cycle stability and shelving performance or the like at high and low current densities, and meets the requirements of the water-based zinc ion energy storage technology with high energy density and long life, thereby having a broad application development space.

Water-based zinc ion battery colloidal electrolyte, and preparation method and application thereof

The invention discloses a gel battery electrolyte membrane as well as a preparation method and application thereof. The uniform gel electrolyte membrane is grown on a metal surface in situ in an electrochemical crosslinking manner and is matched with a positive electrode to prepare an energy storage device with flexibility and compilation. The preparation method is simple and rapid, no chemical waste is generated in the preparation process, the controllability is high, the integration is high, the limitation of the size, the size and the shape of the metal negative electrode is avoided, the method can adapt to the preparation of various microcosmic and macroscopic energy storage devices, and various anisotropic battery devices can be met. Meanwhile, the material is safe and non-toxic, hasgood biocompatibility, and can meet the requirements of high-safety implantable electronic devices and other special fields.

Gel battery electrolyte membrane as well as preparation method and application thereof

The invention discloses an aqueous zinc ion battery composite electrolyte membrane and a preparation and application method thereof. The prepared zinc alginate-based polymer composite gel electrolytemembrane has a homogeneous three-dimensional layered cross-linking network structure and high ion conductivity. According to the preparation method, the polysaccharide sodium alginate-based material and the zinc ion are utilized, and the zinc ion cross-linking electrolyte membrane is formed in a weak acid or neutral medium through stacking after the sodium-zinc ion exchange reaction. The electrolyte membrane prepared by the method has both excellent physical and electrochemical properties, the problems of negative electrode zinc dendrites and zinc corrosion can be effectively suppressed, and the method is simple and fast, low in cost, environmentally friendly and controllable in condition and is particularly suitable for low-cost large-scale energy storage zinc ion battery systems and alsosuitable for preparing flexible aqueous system zinc ion batteries in flexible devices.

Aqueous zinc ion battery electrolyte membrane and preparation and application method thereof

The invention discloses a preparation method and application of a three-dimensional network structure nanolayer zinc negative electrode. The method comprises the following steps of: (1) preparing a Zn(NO3)2 solution of a predetermined concentration, and recording the Zn(NO3)2 solution as a solution A; (2) preparing a strong alkali solution of a set concentration, recording the strong alkali solution as a solution B; (3) adding the solution A to the solution B to obtain a colloidal compound precipitate containing hydroxylated Zn, removing large-scale precipitates by centrifugation to obtain a nano zinc precipitate liquid; (4) immersing zinc foil in the nano zinc precipitation liquid, and then taking out, washing and drying the zinc foil. The method uses a simple chemical deposition method to prepare a metal zinc negative electrode having a nanometer-scale three-dimensional network structure in situ on the surface of the zinc negative electrode by using deposition and etching interaction, thereby retaining the high volume energy density of the whole zinc foil, and ensuring the high-stability three-dimensional network interface reaction layer. Thus, the electric field uniform distribution of traditional three-dimensional foam zinc is realized, so that large dendrites cannot be formed during discharge, and the safe operation and service life of a battery are ensured.

Zhou Jiang

Papers

Water-based zinc ion battery colloidal electrolyte, and preparation method and application thereof

Metal zinc negative electrode with uniform mesoporous structure coating and preparation method and application thereof

Gel battery electrolyte membrane as well as preparation method and application thereof

Aqueous zinc ion battery electrolyte membrane and preparation and application method thereof

Preparation method and application of three-dimensional network structure nanolayer zinc negative electrode