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A functional interlayer as a polysulfides blocking layer for high-performance lithium-sulfur batteries
被引:42
作者:
Yin, Lingxia
[1
]
Dou, Hui
[1
]
Wang, Aixiu
[1
]
Xu, Guiyin
[1
]
Nie, Ping
[1
]
Chang, Zhi
[1
]
Zhang, Xiaogang
[1
]
机构:
[1] Nanjing Univ Aeronaut & Astronaut, Coll Mat Sci & Technol, Jiangsu Key Lab Mat & Technol Energy Convers, Nanjing 210016, Jiangsu, Peoples R China
基金:
中国国家自然科学基金;
关键词:
ONE-STEP SYNTHESIS;
CATHODE MATERIAL;
GRAPHENE OXIDE;
ENHANCED PERFORMANCE;
CYCLE PERFORMANCE;
CARBON PAPER;
COMPOSITE;
POLYANILINE;
NANOTUBE;
FILM;
D O I:
10.1039/c7nj03675b
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
A new Li-S battery with a polyaniline-graphene oxide (PANI-GO) membrane sandwiched between a sulfur cathode and a separator shows high cycling stability and enhanced rate performance. The initial specific capacity is 1261 mA h g(-1) at 0.5C and the capacity retention is 73.0% after 150 cycles. The excellent electrochemical performance can be attributed to the new cell configuration. Specifically, the PANI-GO membrane can not only effectively mitigate the diffusion of lithium polysulfides to the negative electrode by a chemical interaction between the imine group (-N=) of the quinoid ring and polysulfides, but also improve sulfur utilization due to its conductive networks.
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页码:1431 / 1436
页数:6
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