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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 PublicationACS NANO
ISSN1936-0851
Issue3Pages:3365
SubtypeArticle
AbstractA 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.
DOI10.1021/acsnano.9b09231
WOS KeywordLITHIUM-SULFUR BATTERIES ; METAL-ORGANIC FRAMEWORKS ; POROUS CARBON POLYHEDRA ; COMPOSITE ; MECHANISM ; KINETICS ; CATHODES ; HOSTS
Language英语
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science
PublisherAMER CHEMICAL SOC
Citation statistics
Cited Times:13[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://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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