Ningde Amperex Technology Limited

Feng Gu

Leimin Xu

Molin Zhou

Jianming Zheng

Xin Jiang

A solid electrolyte material having a general chemical formula of LiMM'S, where M is at least one of Al, Ga or In, M′ is at least one of Si or Ge, and 0<x≤0.5. The solid electrolyte material according to the application is simple in composition, contains no phosphorus sensitive to water, and has good Li+ conductivity at the same time.

Phosphorus-free sulfide solid electrolyte

Embodiments of the present application relate to a solid electrolyte and a preparation method thereof, and an electrochemical device and an electronic device comprising the same. The solid electrolyte of the present application includes a solid electrolyte material being represented by the chemical formula of LiMGaPS, where M is selected from the group consisting of Sr, Ba, Zn, Cd and a combination thereof, 0&#x2264;x&#x2264;0.2 and 0&#x2264;y&#x2264;0.05. Embodiments of the present application provides a solid electrolyte having good stability with lithium and ionic conductivity by forming the solid electrolyte using lower cost solid electrolyte materials and optimizing the material composition and a crystal structure thereof. At the same time, this also reduces the manufacturing costs of the solid electrolyte, and improves the structural stability of the solid electrolyte.

Growing community of inventors

Ningde, China

Feng Gu