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Energy Materials and Systems (EMS) Laboratory

Research Highlights

2017 Tungsten disulfide catalysts supported on a carbon cloth interlayer for high performance Li–S battery (Back Cover)

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Author
Jungjin Park, Byeong-Chul Yu, Joong Sun Park, Jang Wook Choi, Chunjoong Kim,* Yung‐Eun Sung,* John B Goodenough*
Journal
Advanced Energy Materials
Vol
7
Page
1602567
Year
2017
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.