Co single-atom catalyst on ordered macro-microporous structure as separator for Li-S battery

被引：3

作者：

Cao, Wenhui ^{[1
]}

Liu, Mengyu ^{[1
]}

Zhang, Kai ^{[1
]}

Zhang, Shenghao ^{[1
]}

Li, Caixia ^{[1
]}

Wen, Yonghong ^{[1
]}

Lv, Qingliang ^{[1
]}

Wen, Qin ^{[2
]}

Wang, Lei ^{[1
]}

机构：

[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, Coll Environm & Safety Engn, State Key Lab Base Ecochem Engn,Int Sci & Technol, Qingdao 266042, Peoples R China

[2] Qingdao Univ, Inst Biomed Engn, Coll Life Sci, Qingdao 266071, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2025年 / 684卷

基金：

中国国家自然科学基金;

关键词：

Lithium-sulfur batteries; Shuttle effect; Single-atom catalysts; Ordered structure; CARBON;

D O I：

10.1016/j.jcis.2025.01.074

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Lithium-sulfur (Li-S) batteries have attracted significant attention due to their high theoretical energy density, low cost and environmental friendliness, which are considered one of the most promising candidates for next- generation energy storage devices. However, the sluggish kinetics associated with sulfur oxidation-reduction reactions and the detrimental shuttle effect caused by lithium polysulfides (LiPSs) significantly impacts the electrochemical performance of Li-S batteries. In this work, Co single-atom catalyst (CoSAC-NC) on an ordered macro-microporous structure are designed, and the catalyst are coated onto 2325 separator. The ordered micromicroporous structure of CoSAC-NC enhances the interaction with LiPSs and provide reservoir for LiPSs. Secondly, the highly exposed Co-Nx configuration active sites can effectively anchor LiPSs and promotes their rapid conversion. This work significantly improves the utilization efficiency of the cathode, resulting in an excep- tionally low-capacity decay rate of just 0.043 % per cycle over 1000 cycles at 1 C.

引用

页码：189 / 196

页数：8