Tungsten Disulfide Catalysts Supported on a Carbon Cloth Interlayer for High Performance Li-S Battery
Tungsten Disulfide Catalysts Supported on a Carbon Cloth Interlayer for High Performance Li-S Battery
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DOI：
10.1002/aenm.201602567
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发表时间：
2017-06-07
影响因子：
27.8
通讯作者：
Goodenough, John B.
中科院分区：
文献类型：
--
作者：
Park, Jungjin;Yu, Byeong-Chul;Goodenough, John B.
插入化合物阴极的容量限制已经激发了对用于具有金属锂阳极的可再充电电池单元的硫阴极的兴趣;但是由于中间体Li 2Sx（x = 2-8）多硫化物在所使用的有机液体电解质中的溶解度而导致的不可逆容量损失已经阻碍了实际应用。由负载在阴极集流体和碳布中间层（CCl）上的层状二硫化钨（WS 2）组成的双功能阴极结构通过提供可溶性Li 2Sx在WS 2上的强吸附以及经由阻挡碳布中间层从集流体快速接近电子而在锂半电池中提供优异的性能。
The capacity limitations of insertion-compound cathodes has motivated interest in a sulfur cathode for a rechargeable battery cell with a metallic-lithium anode; but irreversible capacity loss owing to solubility of intermediate Li2Sx (x = 2-8) polysulfides in the organic-liquid electrolytes used has prevented practical application. A dual-function cathode structure consisting of layered tungsten disulfide (WS2) supported both on the cathode current collector and on a carbon cloth interlayer (CCl) gives excellent performance in a lithium half-cell by providing strong adsorption of the soluble Li2Sx on the WS2 with fast access to electrons from the current collector via a blocking carbon cloth interlayer.