成果归属机构：

材料科学与工程学院

作者：

Mao, Ya ; Duan, Hui ; Xu, Bin ; Zhang, Lin ; Hu, Yongsheng ; Zhao, Changchun ; Wang, Zhaoxiang ; Chen, Liquan ; Yang, Yusheng

单位：

Chinese Acad Sci, Key Lab Renewable Energy, Beijing Natl Lab Condense Matter Phys, Beijing Key Lab New Energy Mat & Devices,Inst Phy, Beijing 100190, Peoples R China;Res Inst Chem Def, Beijing 100191, Peoples R China;China Univ Geosci, Sch Mat Sci & Technol, Beijing 100083, Peoples R China

摘要：

Nitrogen-rich mesoporous carbon materials were obtained by pyrolyzing gelatin between 700 and 900 degrees C with a nano-CaCO3 template. The mesoporous structure and the high nitrogen content endowed these materials with reversible capacities up to ca. 1200 mA h g (-1). The high specific surface area and the nitrogen doping are responsible for the capacity loss in the initial cycle. FTIR and XPS studies indicate that the nitrogen in the material exists in the form of pyridinic, pyrrolic/pyridonic and graphitic nitrogen. The Raman spectroscopic analysis indicates that the structure of the mesoporous carbon becomes more disordered during discharge and is restored during recharge, a behavior similar to that in nitrogen-free hard carbon materials. The reversible structural variation of these carbon materials ensures their high cyclic reversibility.

基金：

National 973 Program of China [2009CB220100]; National Natural Science Foundation of China (NSFC) [20974120, 50802112]

语种：

英文

DOI：

10.1039/c2ee21817h

来源：

ENERGY & ENVIRONMENTAL SCIENCE,2012(7):7950-7955.

出版日期：

2012-07

提交日期：

2017-12-14

引用参考：

Mao, Ya; Duan, Hui; Xu, Bin; Zhang, Lin; Hu, Yongsheng; Zhao, Changchun; Wang, Zhaoxiang; Chen, Liquan; Yang, Yusheng. Lithium storage in nitrogen-rich mesoporous carbon materials[J]. ENERGY & ENVIRONMENTAL SCIENCE,2012(7):7950-7955.