Goldilocks Zone IP Law
Nitrogen-doped graphene coated nano sulfur positive electrode composite material, preparation method, and application thereof
The invention provides a nitrogen-doped graphene coated nano sulfur positive electrode composite material, a preparation method, and an application thereof. The composite material includes: an effective three-dimensional conductive network formed by overlapping of nitrogen-doped graphenes, and nano sulfur particles coated by nitrogen doped graphene layers evenly. The preparation method includes: dispersing nitrogen-doped graphenes in a liquid-phase reaction system including at least sulfur source and acid, and depositing nano sulfur particles by an in-situ chemical reaction of the sulfur source and the acid, thereby preparing the positive electrode composite material. The positive electrode composite material of the invention has a high conductivity, a high sulfur utilization rate, and a high rate, thereby restraining the dissolution and shuttle effect in the lithium sulfur batteries, and enhancing the cyclic performance of the batteries.
SUZHOU INSTITUTE OF NANO-TECH AND NANO-BIONICS, CHINESE ACADEMY OF SCIENCE
Y H H H H B H H
Y02E H01M H01M H01M H01M B01J H01M H01M
additional inventional inventional additional inventional inventional inventional inventional
Guizhu Fangmin Lisha Meinan Yuegang Hongfei Yuan Wanfei Yongcai
Li Ye Zhou Liu Zhang Li Hou Li Qiu