? 祝贺徐继坤博士在Industrial Crops & Products发表学术论文

祝贺徐继坤博士在Bioresource Technology发表学术论文 ?

April 25, 2017

祝贺袁喜庆等同学在RSC Advances再次发表学术论文

祝贺袁喜庆等同学在RSC Advances发表学术论文:

Facile synthesis of mesoporous graphene platelet with in-situ nitrogen and sulfur doping for lithium-sulfur batteries, Xiqing Yuan, Bingchuan Liu, Huijie Hou, Kemal Zeinu, Yuhang He, Xiaorong Yang, Weijun Xue, Xiulin He, Long Huang, Xiaolei Zhu, Longsheng Wu, Jingping Hu*, Jiakuan Yang*, Jia Xie, RSC Advances, 2017, 7, 22567-22577
(全文:http://dx.doi.org/10.1039/C7RA01946G (http://dx NULL.doi NULL.org/10 NULL.1039/C7RA01946G)

论文摘要 Abstract

The interaction between lithium polysulfides and doped heteroatoms could prevent the loss of soluble polysulfides in the cathode and mitigate the shuttle effect in lithium–sulfur batteries. Herein, a facile synthesis of mesoporous graphene platelets (NSGs) with in situ nitrogen and sulfur doping by the pyrolysis of a self-assembled L-cysteine precursor on sodium chloride crystal surface for structure-directing is presented. The mesoporous lamellar structure of the NSG possesses a uniform distribution of pyrrolic N, pyridinic N, and thiosulphate structured heteroatoms originating from in situ doping, which promotes the confinement of intermediate polysulfides. Combining the strong interactions with soluble polysulfide, flexible mesoporous architecture, and high conductivity of graphene, the prepared NSG material exhibited a high initial capacity of 1433 mA h g?1 at a 2C rate as well as a reversible capacity of 684 mA h g?1 after 200 cycles. This demonstrates that the in situ nitrogen and sulfur doped thin lamellar structure of graphene would be a promising cathode material for high performance lithium–sulfur batteries.