A modified hierarchical porous carbon for lithium/sulfur batteries with improved capacity and cycling stability
文献类型：期刊论文
| 作者 | Wang, Meiri1; Zhang, Huamin1; Zhang, Yining1; Li, Jing1,2; Zhang, Fengxiang1; Hu, Wen1 |
| 刊名 | journal of solid state electrochemistry
 |
| 出版日期 | 2013-08-01 |
| 卷号 | 17期号:8页码:2243-2250 |
| 关键词 | Lithium/sulfur battery Cycle ability Hierarchically porous carbon Sulfur utilization Metal salt |
| 英文摘要 | a hierarchical porous carbon material as the conductive matrix in the sulfur cathode for rechargeable lithium batteries is prepared by an in situ two-step activation method using sucrose as the carbon source, caco3 as the template, and (ch3coo)(2)cu center dot h2o (cu(ac)(2)) as the additive. the microstructure and morphology of the activated porous sulfur-carbon composite is characterized by means of x-ray diffraction, n-2 adsorption-desorption, and scanning electron microscopy. the functioning mechanism of the additive on the pore formation is investigated using thermogravimetric analysis. our results establish that thermal decomposition of the nano-caco3 template results in the formation of the hierarchical porous carbon structure, and addition of cu(ac)(2) influences the carbonization process in an un-homogeneous way through the copper ion-sucrose reaction, resulting in the volume increment of small mesopores. the sample obtained shows better sulfur dispersion in the active porous carbon than that synthesized without cu(ac)(2) involvement, which is attributable to the modified pore structure and enlarged pore volume. thus, a better utilization of sulfur is achieved and the initial discharge capacity increases from 1,287 to 1,397 mah g(-1). furthermore, the li-s battery shows improved cycle stability because of enhanced interaction between the sulfur and the small mesopore. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | electrochemistry |
| 研究领域[WOS] | electrochemistry |
| 关键词[WOS] | sulfur batteries ; electrochemical performance ; activated carbon ; cathode ; cells ; composites ; electrode |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000322392600017 |
| 公开日期 | 2015-11-10 |
| 源URL | [http://159.226.238.44/handle/321008/137507]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, Energy Storage Div, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Meiri,Zhang, Huamin,Zhang, Yining,et al. A modified hierarchical porous carbon for lithium/sulfur batteries with improved capacity and cycling stability[J]. journal of solid state electrochemistry,2013,17(8):2243-2250. |
| APA | Wang, Meiri,Zhang, Huamin,Zhang, Yining,Li, Jing,Zhang, Fengxiang,&Hu, Wen.(2013).A modified hierarchical porous carbon for lithium/sulfur batteries with improved capacity and cycling stability.journal of solid state electrochemistry,17(8),2243-2250. |
| MLA | Wang, Meiri,et al."A modified hierarchical porous carbon for lithium/sulfur batteries with improved capacity and cycling stability".journal of solid state electrochemistry 17.8(2013):2243-2250. |
入库方式： OAI收割
来源：大连化学物理研究所
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