阳极
多硫化物
电镀(地质)
锂(药物)
枝晶(数学)
材料科学
硫黄
电化学
石墨烯
化学工程
电极
氧化还原
剥离(纤维)
纳米技术
化学
电解质
阴极
复合材料
冶金
物理化学
数学
几何学
地球物理学
内分泌学
工程类
地质学
医学
作者
Peng Wang,Fanghan Sun,Shenglin Xiong,Zhengchunyu Zhang,Bin Duan,Chenghui Zhang,Jinkui Feng,Baojuan Xi
标识
DOI:10.1002/anie.202116048
摘要
The practical application of lithium-sulfur batteries is still limited by the lithium polysulfides (LiPSs) shuttling effect on the S cathode and uncontrollable Li-dendrite growth on the Li anode. Herein, elaborately designed WSe2 flakelets immobilized on N-doped graphene (WSe2 /NG) with abundant active sites are employed to be a dual-functional host for satisfying both the S cathode and Li anode synchronously. On the S cathode, the WSe2 /NG with a strong interaction towards LiPSs can act as a redox accelerator to promote the bidirectional conversion of LiPSs. On the Li anode, the WSe2 /NG with excellent lithiophilic features can regulate the uniform Li plating/stripping to mitigate the growth of Li dendrite. Taking advantage of these merits, the assembled Li-S full batteries exhibit remarkable rate performance and stable cycling stability even at a higher sulfur loading of 10.5 mg cm-2 with a negative to positive electrode capacity (N/P) ratio of 1.4 : 1.
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