Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7994125 | Journal of Alloys and Compounds | 2018 | 7 Pages |
Abstract
Owing to the high energy density and low cost, Li-S batteries are received intensive attention for the next generation energy storage devices. Due to the dissolution of intermediate Li2Sn (4 < n â¤Â 8), S is needed to be loaded onto substrate to confine it. Up to now, most of the loaded S are particles. The morphology of the loaded S influences the performance. Herein, we find that the deposited S on the surface of carbon shows the nano-layer morphology. And solid electrolyte interface forms on the surface of the layer. The most vital issue is that it exhibits outstanding cycle-stability, after 300 cycles, 98% capacity (754 mAh gâ1) is retained at 0.5 C. And the nano-layer is kept after long-term cycles, which indicates the nano-layer has well structure stability and plays the role of restraining the dissolution of intermediate Li2Sn (4 < n â¤Â 8) during long-term cycles.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Peng Zheng, Ting Liu, Jinhua Cao, Jiajia Song, Xiaofei Wang, Jinghao Huo, Ce Zhang, Shouwu Guo,