Secondary battery negative electrode material

A negative electrode material, secondary battery technology, applied in the field of electrochemical energy storage, can solve problems such as battery design difficulties
CN104659342AActive Publication Date: 2015-05-27浙江精研深蓝新能源科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
浙江精研深蓝新能源科技有限公司
Publication Date
2015-05-27

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Abstract

The invention discloses a secondary battery negative electrode material which comprises a framework, a chelation / adsorption radical and an active substance, wherein the framework does not participate in electrochemical reaction, and only provides a carrier for the chelation / adsorption radical; the chelation / adsorption radical comprises outer electrodes of atoms of N, S, P, O and the like, and can form a chelated / chemical adsorption bond (represented by an iminodiacetic acid chelated radical in figure) with two-valent and polyvalent metals; the active substance can be two-valent and polyvalent metal ions which can be reduced into relatively low valent. During charging, the metal ions which are taken as the active substance is reduced into a relatively-low-valent state or a metal elemental state; during discharging, the metal ions are reversely generated and form chelated / chemical adsorption bonds with the chelation / adsorption radical. The negative electrode material can be matched with a plurality of positive electrode materials to form a battery. The battery negative electrode disclosed by the invention is novel in principle and structure, expected to be applied to electric vehicles and large-scale energy storage projects due to low price and reliability.
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Description

technical field

[0001] The invention belongs to the field of electrochemical energy storage, and in particular relates to a secondary battery negative electrode material. Background technique

[0002] The current demand for energy storage technology far exceeds any time in human history. Whether it is new energy vehicles, or future wind energy, supporting solar power plants, or urban smart grids, all require a large number of reliable energy storage technologies.

[0003] The current commercialized battery technology is mainly the old lead-acid battery that is harmful to the environment. The emerging lithium-ion battery has achieved great success in portable devices, but in the field of large-scale power or energy storage, due to the price, Factors such as safety are constrained. Therefore, it is a very urgent task to develop a safe and cheap rechargeable battery.

[0004] In 1994, Wu Li from the research group of Jeff Dahn in Canada published an article named as VO in SC...

Claims

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