Three-dimensional sandwich-type graphene@microporous carbon architecture for lithium-sulfur batteries
文献类型：期刊论文
| 作者 | Li, Nian-Wu; Yin, Ya-Xia; Guo, Yu-Guo |
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 2016 |
| 卷号 | 6期号:1页码:617-622 |
| 英文摘要 | The commercial applications of lithium-sulfur batteries are hindered by several issues including the poor electronic/ionic conductivity of sulfur and discharge products, the dissolution of lithium polysulfides in organic electrolytes, and the volume change during charge/discharge processes. In this study, a three-dimensional (3-D) sandwich-type graphene@microporous carbon (G@MC) architecture with large pore volume (2.65 cm(3) g(-1)) and ultrahigh surface area (3374 m(2) g(-1)) was designed to encapsulate sulfur and polysulfides in the hierarchical microporous structure. The G@MC materials with a lot of sp(2) hybrid carbon atoms can provide 3-D electron transfer pathways for sulfur and discharge products. Furthermore, the G@MC materials with the novel hierarchical structure can absorb a lot of polysulfides and restrain the polysulfide diffusion, and provide adequate nanospace for sulfur expansion ensuring the structural integrity during the cycling. Thus, the optimized G@MC-S nanocomposite with high sulfur loading (75.4 wt%) retains a discharge capacity of 541.3 mA h g(-1) after 500 cycles at 0.5C. This design strategy is simple and broadly applicable, providing new opportunities for materials design that can be extended to various electrode materials. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2016-03-15 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/29754]  |
| 专题 | 化学研究所_分子纳米结构与纳米技术实验室 |
| 作者单位 | Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, CAS Key Lab Mol Nanostruct & Nanotechnol, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Nian-Wu,Yin, Ya-Xia,Guo, Yu-Guo. Three-dimensional sandwich-type graphene@microporous carbon architecture for lithium-sulfur batteries[J]. RSC ADVANCES,2016,6(1):617-622. |
| APA | Li, Nian-Wu,Yin, Ya-Xia,&Guo, Yu-Guo.(2016).Three-dimensional sandwich-type graphene@microporous carbon architecture for lithium-sulfur batteries.RSC ADVANCES,6(1),617-622. |
| MLA | Li, Nian-Wu,et al."Three-dimensional sandwich-type graphene@microporous carbon architecture for lithium-sulfur batteries".RSC ADVANCES 6.1(2016):617-622. |
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来源：化学研究所
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