发明名称 |
NITROGEN-DOPED GRAPHENE COATED NANO SULFUR POSITIVE ELECTRODE COMPOSITE MATERIAL, PREPARATION METHOD, AND APPLICATION THEREOF |
摘要 |
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. |
申请公布号 |
US2017125800(A1) |
申请公布日期 |
2017.05.04 |
申请号 |
US201515317405 |
申请日期 |
2015.06.05 |
申请人 |
SUZHOU INSTITUTE OF NANO-TECH AND NANO-BIONICS, CHINESE ACADEMY OF SCIENCE |
发明人 |
ZHANG Yuegang;QIU Yongcai;LI Wanfei;LI Guizhu;HOU Yuan;LIU Meinan;ZHOU Lisha;YE Fangmin;LI Hongfei |
分类号 |
H01M4/36;H01M4/58;B01J13/08;H01M4/587 |
主分类号 |
H01M4/36 |
代理机构 |
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代理人 |
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主权项 |
1. A nitrogen-doped graphene coated nano-sulfur positive electrode composite material, comprising:
an effective three-dimensional conductive network formed by overlapping of nitrogen-doped graphenes; and nano sulfur particles coated by nitrogen-doped graphene layers evenly. |
地址 |
Suzhou CN |