An extremely high rate Li–S battery with hybrid electrolyte
An extremely high rate Li–S battery with hybrid electrolyte
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采用混合电解质的极高倍率锂硫电池
DOI：
10.1016/j.jallcom.2020.156261
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发表时间：
2020-12
影响因子：
6.2
通讯作者：
Ping Fan
中科院分区：
文献类型：
--
作者：
Yanghai Xu;Quanfeng Zhang;Bo Fan;Bai Xue;Huijian Chen;Xianghua Zhang;Zhongkuan Luo;Fang Wang;David le Coq;Laurent Calvez;Hongli Ma;Ping Fan
多硫化物穿梭和锂枝晶是阻碍高性能锂硫电池发展的两个主要问题。理想的解决方案是采用由硫化物固体电解质（SSE）和液体电解质（LE）组成的混合电解质，其中SSE用作抑制多硫化物穿梭和锂枝晶生长的屏障，而LE用作快速Li+传输介质。在这项工作中，Li 10 SnP 2S 12膜，陶瓷状致密结构，提供了一个刚性的障碍，防止多硫化物穿梭和锂枝晶生长。同时，它的高离子电导率为3.33 × 10−3S/cm（25 °C），伴随着LE良好的润湿和Li+传输能力，使混合电解质体系具有优异的Li+动力学性能。因此，用这种基于SSE的混合电解质系统制造的Li-S电池可以以极高的充电/放电速率运行。在5C（7.10mA/cm ~ 2）倍率下，电池的首次放电容量为659.4mAh/g，循环50次和100次后，容量保持率分别为71.53%和62.67%。还提出了在循环期间电化学反应和副反应之间存在竞争机制，其中电化学反应在高速率下占主导地位。
Polysulfide shuttling and lithium dendrites are two major issues which hinder the development of high-performance Li–S batteries. An ideal solution is to employ hybrid electrolyte consisting of sulfide solid electrolyte (SSE) and liquid electrolyte (LE), where SSE functions as a barrier for suppressing polysulfide shuttling and lithium dendrite growth while LE works as fast Li+transport media. In this work, Li10SnP2S12membranes, with a ceramic-like dense structure, provide a rigid barrier for preventing polysulfide shuttling and lithium dendrite growth. Meanwhile, its high ionic conductivity of 3.33 × 10−3S/cm (25 °C), accompanied with good wetting and Li+transport abilities of LE, renders the hybrid electrolyte system an excellent Li+dynamic property. Consequently, the Li–S batteries fabricated with this SSE-based hybrid electrolyte system can operate at an extremely high charge/discharge rate. At a rate of 5C (7.10 mA/cm2), the batteries show an initial discharge capacity of 659.4 mAh/g, maintain at 471.4 mAh/g and 413.3 mAh/g after 50 and 100 cycles,showing a capacity retention of 71.53% and 62.67%, respectively. It is also proposed that a competitive mechanism exists between the electrochemical reaction and side reaction during cycling, where the electrochemical reaction dominates at high rates.
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影响因子：
17.6
作者：
Changhong Wang;Yang Zhao;Qian Sun;Xia Li;Yulong Liu;Jianwen Liang;Xiaona Li;Xiaoting Lin;
通讯作者：
Changhong Wang;Yang Zhao;Qian Sun;Xia Li;Yulong Liu;Jianwen Liang;Xiaona Li;Xiaoting Lin;
影响因子：
3.9
作者：
Cheng, Xin-Bing;Huang, Jia-Qi;Zhang, Qiang
通讯作者：
Zhang, Qiang
影响因子：
17.6
作者：
Adams, Brian D.;Carino, Emily V.;Zhang, Ji-Guang
通讯作者：
Zhang, Ji-Guang
影响因子：
3.9
作者：
Cheon, SE;Ko, KS;Kim, HT
通讯作者：
Kim, HT
DOI：
10.1039/c4cp03694h
发表时间：
2014-09
期刊：
Physical chemistry chemical physics : PCCP
影响因子：
--
作者：
Qingsong Wang;Jun Jin;Xiangwei Wu;Guoqiang Ma;Jianhua Yang;Z. Wen
通讯作者：
Qingsong Wang;Jun Jin;Xiangwei Wu;Guoqiang Ma;Jianhua Yang;Z. Wen