A dual-spatially-confined reservoir by packing micropores within dense graphene for long-life lithium/sulfur batteries
文献类型：期刊论文
| 作者 | Li, HF(李洪飞); Yang, XW; Wang, XM; He, YS; Ye, FM(叶方敏); Liu, MN(刘美男); Zhang, YG(张跃钢) |
| 刊名 | NANOSCALE
 |
| 出版日期 | 2016 |
| 卷号 | 8期号:4 |
| 通讯作者 | Wang, XM ; Zhang, YG(张跃钢) ; Yang, XW |
| 英文摘要 | In lithium/sulfur batteries, micropores could bring about strong interactions with polysulfides, but could not alleviate the partial polysulfide overflowing outside because of the volume expansion of the lithiated sulfur. A dual-spatially-confined reservoir for sulfur by wrapping microporous carbon with dense graphene, micro@meso-porous DSC (dual-spatial carbon), is synthesized to solve this issue. Such a structure is prepared through two distinctive methods: graphene promoted in situ hydrothermal carbonization of organics to grow micropores on itself, and liquid mediated drying of graphene hydrogel to form mesoporous graphene frameworks. In contrast to previously reported hierarchical carbon/S, the inner micropores are mainly responsible for loading sulfur, which could help confine its particle size, thus increasing the electrical/ionic conductivity and the utilization of sulfur, and restrain lithium polysulfide dissolution because of strong interaction with pore walls; while the outer mesopores act as another reservoir to stabilize the overflowed polysulfide and to enhance the Li+ transport. The S-micro@meso-porous DSC cathode exhibits better discharge capacity and cycling performance than S-microporous AC and S-micro@macro-porous DSC, i.e., 59% and 37% higher capacity remaining at 0.5 C than the latter two, respectively. |
| 关键词[WOS] | SULFUR BATTERIES ; POROUS CARBON ; S BATTERIES ; PORE-SIZE ; CATHODE ; PERFORMANCE ; SUPERCAPACITORS ; CONDUCTIVITY ; INTEGRATION ; SURFACE |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000368860900075 |
| 源URL | [http://ir.sinano.ac.cn/handle/332007/4810]  |
| 专题 | 苏州纳米技术与纳米仿生研究所_纳米研究国际实验室_张跃钢团队 |
| 推荐引用方式 GB/T 7714 | Li, HF,Yang, XW,Wang, XM,et al. A dual-spatially-confined reservoir by packing micropores within dense graphene for long-life lithium/sulfur batteries[J]. NANOSCALE,2016,8(4). |
| APA | Li, HF.,Yang, XW.,Wang, XM.,He, YS.,Ye, FM.,...&Zhang, YG.(2016).A dual-spatially-confined reservoir by packing micropores within dense graphene for long-life lithium/sulfur batteries.NANOSCALE,8(4). |
| MLA | Li, HF,et al."A dual-spatially-confined reservoir by packing micropores within dense graphene for long-life lithium/sulfur batteries".NANOSCALE 8.4(2016). |
入库方式： OAI收割
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