KMS Shanghai Institute of Ceramics，Chinese Academy of Sciences
| Built-In Catalysis in Confined Nanoreactors for High-Loading Li-S Batteries | |
| Wu, QP; Yao, ZG; Zhou, XJ; Xu, J; Cao, FH; Li, CL | |
| 2020-03-24 | |
| Source Publication | ACS NANO
 |
| ISSN | 1936-0851 |
| Issue | 3Pages:3365 |
| Subtype | Article |
| Abstract | A cathode host with strong sulfur/polysulfide confinement and fast redox kinetics is a challenging demand for high-loading lithium-sulfur batteries. Recently, porous carbon hosts derived from metal-organic frameworks (MOFs) have attracted wide attention due to their unique spatial structure and customizable reaction sites. However, the loading and rate performance of Li-S cells are still restricted by the disordered pore distribution and surface catalysis in these hosts. Here, we propose a concept of built-in catalysis to accelerate lithium polysulfide (LiPSs) conversion in confined nanoreactors, i.e., laterally stacked ordered crevice pores encompassed by MoS2-decorated carbon thin layers. The functions of S-fixability and LiPS catalysis in these mesoporous cavity reactors benefit from the 2D interface contact between ultrathin catalytic MoS2 and conductive C pyrolyzed from AI-MOF. The integrated function of adsorption-catalysis-conversion endows the sulfur-infused c@mos(2) electrode with a high initial capacity of 1240 mAh g(-1) at 0.2 C, long life cycle stability of at least 1000 cycles at 2 C, and high rate endurance up to 20 C. This electrode also exhibits commercial potential in view of considerable capacity release and reversibility under high sulfur loading (6 mg cm(-2) and , similar to 80 wt %) and lean electrolyte (E/S ratio of 5 mu L mg(-1) ). This study provides a promising design solution of a catalysis-conduction 2D interface in a 3D skeleton for high-loading Li-S batteries. |
| DOI | 10.1021/acsnano.9b09231 |
| WOS Keyword | LITHIUM-SULFUR BATTERIES ; METAL-ORGANIC FRAMEWORKS ; POROUS CARBON POLYHEDRA ; COMPOSITE ; MECHANISM ; KINETICS ; CATHODES ; HOSTS |
| Language | 英语 |
| WOS Research Area | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| Publisher | AMER CHEMICAL SOC |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.sic.ac.cn/handle/331005/28213 |
| Collection | 中国科学院上海硅酸盐研究所 |
| Recommended Citation GB/T 7714 | Wu, QP,Yao, ZG,Zhou, XJ,et al. Built-In Catalysis in Confined Nanoreactors for High-Loading Li-S Batteries[J]. ACS NANO,2020(3):3365. |
| APA | Wu, QP,Yao, ZG,Zhou, XJ,Xu, J,Cao, FH,&Li, CL.(2020).Built-In Catalysis in Confined Nanoreactors for High-Loading Li-S Batteries.ACS NANO(3),3365. |
| MLA | Wu, QP,et al."Built-In Catalysis in Confined Nanoreactors for High-Loading Li-S Batteries".ACS NANO .3(2020):3365. |
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