材料科学
硒化物
碳纤维
化学工程
硫化物
阳极
钼
煅烧
钾
电极
钠
复合数
无机化学
催化作用
化学
冶金
复合材料
有机化学
物理化学
硒
工程类
作者
Guiling Wang,Jing Zhao,Ye Chen,Kai Zhu,Ke Yao,Qian Wang,Jun Yan,Dianxue Cao,Guiling Wang,Chenxu Miao
标识
DOI:10.1016/j.jcis.2022.08.138
摘要
The structural stability and reaction kinetics of anodes are essential factors for high-performance battery systems. Herein, the molybdenum sulfide selenide (MoSSe) nanosheets anchored on carbon tubes (MoSSe@CTs) are synthesized by a facile hydrothermal method combining with further selenization/calcination treatment. The unique tubular carbon skeletons expose abundant active sites for the well-dispersed growth of MoS2 ultrathin nanosheets on both sides of the tubular carbon skeleton. In addition, the further selenization treatment can expand the interlayer spacing of molybdenum sulfide (MoS2) nanosheets and facilitate the fast sodium/potassium-ion transition and storage. When used in sodium-ion batteries (SIBs), MoSSe@CTs electrode delivers a specific capacity of 486 mAh g-1 at 1 A g-1 and retains a stable reversible capacity of 465 mAh g-1 after 1000 cycles, indicating its good cycling stability. For potassium-ion batteries (KIBs), the MoSSe@CTs composite shows a capacity of 352 mA hg-1 at 1 A g-1 and a good cycling stability (maintains at 272 mA hg-1 after 1000 cycles). This work shows informative guiding significance for exploring advanced electrode materials of sodium/potassium-ion batteries.
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