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题名: In-situ activated polycation as a multifunctional additive for Li-S batteries
作者: Chen, HW(陈宏伟); Wang, CH(王长虹); Dai, YF; Ge, J(葛军); Lu, W(卢威); Yang, JL; Chen, LW(陈立桅)
通讯作者: Chen, LW(陈立桅)
刊名: NANO ENERGY
发表日期: 2016
DOI: 10.1016/j.nanoen.2016.04.052
卷: 26
收录类别: SCI ; EI
文章类型: 期刊论文
部门归属: 纳米研究国际实验室
英文摘要: While Li-S batteries are poised to be the next generation high-density energy storage devices, the low sulfur utilization and intrinsic polysulfide shuttle have limited their practical applications. Here, we report that radical polymer Poly(2,2,6,6-tetramethyl-1-piperidinyloxy-4-yl methacrylate) (PTMA) a stable free radical polymer reported to be potential organic electrode materials can perform as a multifunctional sulfur-trapping and catalytic binder for high performance Li-S batteries once activated via in situ electrochemical oxidation. The activated PTMA(+) not only displays strong binding affinity to poly sulfides but also provides PTMA(+)-assisted additional redox sites and improves the kinetics of the cathode reaction. Thus the novel multifunctional additive for Li-S batteries results in improved cycle life, faster rate performance and most importantly, a significantly increase in specific discharge capacity by 80%, with specific capacity of 1254 mAh/g and Coulombic efficiency of 96% at a four-hour charge/discharge (C/4) current rate. (C) 2016 Elsevier Ltd. All rights reserved.
关键词[WOS]: LITHIUM-SULFUR BATTERIES ; ELECTRON-AFFINITY ; GRAPHENE OXIDE ; PERFORMANCE ; CATHODES ; CHEMISTRY ; POLYMER ; ENERGY ; BINDER ; POLYSULFIDES
语种: 英语
JCR小类分区: 一区
WOS记录号: WOS:000384908700006
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/4921
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. In-situ activated polycation as a multifunctional additive for Li-S batteries[J]. NANO ENERGY,2016,26.
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