Shenzhen Capchem Technology Co., Ltd.

Yunxian Qian

Xiaoxia Xiang

Yonghong Deng

Shiguang Hu

Zhongbo Liu

Yuanyuan Kang

Xiaohu Ao

Hongmei Li

Zhengsheng Zhang

In order to overcome the problem of metal dendrites caused by uneven deposition on the surface of the existing metal electrode, the present application provides a metal electrode, comprising a metal layer and a coating, the coating comprises at least one block copolymer; the block copolymer comprises a first polymer block for independently conducting metal ions and a second polymer block for providing mechanical strength; a shear modulus of the coating is ≥10Pa, and a thickness of the coating is 500 nm-50 μm. Meanwhile, the application also discloses a battery comprising the metal electrode. The metal electrode provided by the application has good ionic conductivity and inhibition capability for metal dendrite.

Metal electrode and battery

In order to overcome the problem that the electrochemical performance of the existing supercapacitor is seriously deteriorated at low temperature, the application provides a supercapacitor, comprising a positive electrode, a negative electrode and an organic electrolyte solution, wherein the organic electrolyte solution comprises an organic electrolyte, a proton inert solvent and an additive, and the additive comprises a compound represented by structural formula 1: The supercapacitor provided by the application has lower ESR (equivalent series resistance) and better high and low temperature performances.

Supercapacitor

Provided is a secondary battery, comprising a positive electrode, the positive electrode comprises a positive electrode material layer, and the positive electrode material layer comprises a positive electrode active material and a compound represented by structural formula I: 

Secondary battery

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Guangdong, China

Yunxian Qian