Aqueous ion battery and preparation method thereof

An ion battery and water system technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve problems such as uneven performance and increased battery cost, and achieve the goals of reducing self-discharge rate, improving cycle life, and improving cycle stability Effect

Active Publication Date: 2020-07-17
北京恩力动力科技有限公司 +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the scheme disclosed in this patent requires the preparation of positive elect

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  • Aqueous ion battery and preparation method thereof
  • Aqueous ion battery and preparation method thereof

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[0040] Example 1

[0041] Lithium manganate, conductive carbon black, and binder are mixed evenly by kneading in a mass fraction ratio of 8:1:1, wherein the binder is polytetrafluoroethylene; The method is evenly compacted on the stainless steel net, and dried to obtain the positive electrode film, which is used as the positive electrode; the metal-modified zinc powder (99% of the zinc powder, the rest is Bi and In), the conductive agent and the binder are mixed by kneading. Mix evenly according to the mass fraction ratio of 8:1:1, wherein the conductive agent is a mixture of conductive carbon black, carbon nanotubes and activated carbon, and the binder is polytetrafluoroethylene; Evenly compacted on the stainless steel net in the way of training, and dried to obtain the negative electrode film, which is used as the negative electrode;

[0042] The prepared positive electrode, glass fiber, and negative electrode are stacked and fixed together in turn to obtain the battery cel...

Example Embodiment

[0043] Example 2

[0044] Mix lithium manganate, conductive graphite and binder uniformly by high-speed stirring in a mass fraction ratio of 91:6:3, wherein the binder is composed of CMC and styrene-butadiene emulsion; the mixed material after uniform mixing Spread evenly on the conductive carbon cloth by coating, and dry to obtain the positive electrode film, which is used as the positive electrode; the metal-modified zinc powder (99% of zinc powder, the rest is Bi and In), activated carbon and viscose are mixed by high-speed stirring. The binder is mixed evenly in a mass fraction ratio of 94:3:3, wherein the binder is a mixture of polyvinyl alcohol and CMC; the mixed material is uniformly attached to the copper grid by pulling the slurry, and dried Obtain the negative electrode film, and use this as the negative electrode;

[0045] The prepared positive electrode, glass fiber, and negative electrode are stacked and fixed together in turn to obtain the battery cell; the batt...

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Abstract

The invention provides an aqueous ion battery and a preparation method thereof, and relates to the technical field of batteries. The metal modified zinc powder is prepared by adopting a coating or doping mode, AND is used as a main negative electrode material to prepare the aqueous ion battery. The microstructure of the metal modified zinc powder is designed to be needle-shaped, so that the chemical activity of the metal modified zinc powder is improved, the corrosion of the negative electrode in the standing process after the battery is charged is effectively delayed, the hydrogen evolution reaction of the battery in the charging and discharging process is inhibited, the cycle life of the battery is prolonged, and the self-discharge rate of the battery is reduced.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to an aqueous ion battery and a preparation method thereof. Background technique [0002] Water-based ion batteries use cheap inorganic salt solutions as electrolytes, which not only avoids the flammability of organic electrolytes in lithium-ion batteries, but also overcomes the high pollution, short life (such as lead-acid batteries) and price of traditional water-based batteries. Expensive (such as NiMH batteries) disadvantages. All raw materials do not contain heavy metals, are non-polluting and safe, and the cost is roughly the same as that of lead-acid batteries. It is an ideal system that can meet the requirements of large-scale energy storage technology. It has huge social potential in leading and promoting the development of "clean energy + smart grid" technology economic outlook. [0003] The positive electrode material of some water-based ion batteries is the same as t...

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Application Information

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IPC IPC(8): H01M10/36H01M10/38H01M4/42
CPCH01M4/42H01M10/38H01M10/36H01M2004/027Y02E60/10Y02P70/50
Inventor 杨鹏丁波曹翊李昌盛罗刚国车勇戴翔
Owner 北京恩力动力科技有限公司
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