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题名: Rational Design of Cathode Structure for High Rate Performance Lithium-Sulfur Batteries
作者: Chen, HW(陈宏伟); Wang, CH(王长虹); Dai, YF; Qiu, SQ(邱胜强); Yang, JL; Lu, W(卢威); Chen, LW(陈立桅)
通讯作者: Chen, LW (陈立桅)
关键词: Li-S battery ; rate performance ; free-standing cathode ; reduced graphene oxide (rGO) ; poly(anthraquinonyl sulfide) (PAQS) ; sulfur trapping agent
刊名: NANO LETTERS
发表日期: 2015
DOI: 10.1021/acs.nanolett.5b01837
卷: 15, 期:8, 页:6
收录类别: SCI
部门归属: 纳米研究国际实验室
英文摘要: Practical applications of Li-S batteries require not only high specific capacities and long cycle lifetimes but also high rate performance. We report a rationally designed Li-S cathode, which consists of a freestanding composite thin film assembled from S nanoparticles, reduced graphene oxide (rGO), and a multifunctional additive poly(anthraquinonyl sulfide) (PAQS). The S nanopartides provide a high initial specific capacity, and the layered and porous rGO structure provides electron and ion transport paths and restricts polysulfide shuttling. PAQS is not only a highly efficient sulfide trapping agent but also an excellent Li+ conductor, which benefits the battery reaction kinetics at a high rate. The resulting cathode exhibits an initial specific capacity of 1255 mAh g(-1) with a decay rate as low as 0.046% per cycles over 1200 cycles. Importantly, it displays a reversible capacity of 615 mAh g(-1) when discharged at a high rate of 8 C (13.744 A g(-1)).
语种: 英语
JCR小类分区: 一区
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内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/3332
Appears in Collections:纳米研究国际实验室_陈立桅团队_期刊论文

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Recommended Citation:
Chen, HW,Wang, CH,Dai, YF,et al. Rational Design of Cathode Structure for High Rate Performance Lithium-Sulfur Batteries[J]. NANO LETTERS,2015,15(8):6.
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