| Gradually anchoring sulfur into in-situ doped carbon substrate as cathode for Li-S batteries with excellent wide-temperature performance | |
Hai, Chunxi ; Peng, Guiping; Zhou, Yuan; Shen, Yue; Li, Xiang; Sun, Yanxia; Zhang, Guotai; Zeng, Jinbo; Dong, Shengde
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| 2021-11 | |
| 发表期刊 | CERAMICS INTERNATIONAL
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| ISSN | 0272-8842 |
| 卷号 | 48期号:2页码:1622-1632 |
| 摘要 | Carbon spheres, prepared by hydrothermally treating fresh potato starch, is employed as the sulfur host to configure a high-performance cathode substrate candidate for Li-S batteries. As confirmed by experimental results, both the improved the rate and cycle performances of Li-S batteries cathode with gradient sulfur immobilization, are mainly attributed to the confining, adsorption and conduction multi-functions of as-prepared carbon spheres toward polysulfides. Specifically, on starting the discharging/charging cycles, the active material alpha-S-8 is irreversibly converted to polysulfides and then transformed between beta-S-8 and polysulfides during the next charge/discharge cycles. After initialization at 0.1C for 3 cycles, the initial reversible discharge capacities of the Li-S batteries cathode with optimized sulfur amount are 1072.5, 831.3, 780.4, 726.8, 714.3, 702.7 mAh g(sulfur)(-1) at 0.1, 0.5, 1, 2, 3 and 4 C, which is superior to those of the most previously reported reports. Besides that, as-designed potato-derived carbon based composite cathodes exhibits remarkable rate performance and cycling stability even at wide temperature ranging from -40 to 60 degrees C, which evidently supports the dominant role of as-prepared 3D carbon spheres in boosting the cathode performance for Li-S batteries. |
| DOI | 10.1016/j.ceramint.2021.09.241 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.isl.ac.cn/handle/363002/34586 |
| 专题 | 盐湖资源与化学实验室 |
| 推荐引用方式 GB/T 7714 | Hai, Chunxi,Peng, Guiping,Zhou, Yuan,et al. Gradually anchoring sulfur into in-situ doped carbon substrate as cathode for Li-S batteries with excellent wide-temperature performance[J]. CERAMICS INTERNATIONAL,2021,48(2):1622-1632. |
| APA | Hai, Chunxi.,Peng, Guiping.,Zhou, Yuan.,Shen, Yue.,Li, Xiang.,...&Dong, Shengde.(2021).Gradually anchoring sulfur into in-situ doped carbon substrate as cathode for Li-S batteries with excellent wide-temperature performance.CERAMICS INTERNATIONAL,48(2),1622-1632. |
| MLA | Hai, Chunxi,et al."Gradually anchoring sulfur into in-situ doped carbon substrate as cathode for Li-S batteries with excellent wide-temperature performance".CERAMICS INTERNATIONAL 48.2(2021):1622-1632. |
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