阳极
锂(药物)
复合数
材料科学
离子
碳纤维
电化学
纳米技术
化学工程
化学
复合材料
电极
工程类
有机化学
物理化学
内分泌学
医学
作者
Ming Yuan,Dakui Zhang,Jianke Li,Beibei Han,Guiyin Xu,Kun Wang,Baigang An,Dongying Ju,Lixiang Li,Weimin Zhou
标识
DOI:10.1016/j.electacta.2022.141532
摘要
In accordance with a double covering idea, the Sb@rGO@NSC (Sb covered by rGO and N, S doped carbons) with high performance is successfully synthesized by co-carbonizations using the SbCl3, GO, glucose, ammonium citrate and sulfocarbamide. The tremendous dispersions of Sb particles with nano sizes in carbon substrates and formations of 3D hierarchical porous structures make the Sb@[email protected] composite material to possess the superior electrochemical performance. As can be seen, the Sb@[email protected] manifests the high storage capacity (1121.2 mAh g−1) at 0.5 A g−1, over cycling 500 times. Concurrently, the storage capacity of Sb@[email protected] has 721.1 mAh g−1 and 342.9 mAh g−1, even after carrying out the cycles 1000 times with current densities set as 1.0 A g−1 and 5.0 A g−1, respectively. The structural merits of Sb@[email protected] can lead contents of Sb and contained carbons to develop their fundamental storage abilities as far as possible, which is a reason that the Sb@rG[email protected] possesses exceedingly competitive storage performance.
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