Unknown

Dataset Information

0

Interfacial "Double-Terminal Binding Sites" Catalysts Synergistically Boosting the Electrocatalytic Li2S Redox for Durable Lithium-Sulfur Batteries.


ABSTRACT: Catalytic conversion of polysulfides emerges as a promising approach to improve the kinetics and mitigate polysulfide shuttling in lithium-sulfur (Li-S) batteries, especially under conditions of high sulfur loading and lean electrolyte. Herein, we present a separator architecture that incorporates double-terminal binding (DTB) sites within a nitrogen-doped carbon framework, consisting of polar Co0.85Se and Co clusters (Co/Co0.85Se@NC), to enhance the durability of Li-S batteries. The uniformly dispersed clusters of polar Co0.85Se and Co offer abundant active sites for lithium polysulfides (LiPSs), enabling efficient LiPS conversion while also serving as anchors through a combination of chemical interactions. Density functional theory calculations, along with in situ Raman and X-ray diffraction characterizations, reveal that the DTB effect strengthens the binding energy to polysulfides and lowers the energy barriers of polysulfide redox reactions. Li-S batteries utilizing the Co/Co0.85Se@NC-modified separator demonstrate exceptional cycling stability (0.042% per cycle over 1000 cycles at 2 C) and rate capability (849 mAh g-1 at 3 C), as well as deliver an impressive areal capacity of 10.0 mAh cm-2 even in challenging conditions with a high sulfur loading (10.7 mg cm-2) and lean electrolyte environments (5.8 μL mg-1). The DTB site strategy offers valuable insights into the development of high-performance Li-S batteries.

SUBMITTER: Xu H 

PROVIDER: S-EPMC10976959 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

altmetric image

Publications

Interfacial "Double-Terminal Binding Sites" Catalysts Synergistically Boosting the Electrocatalytic Li<sub>2</sub>S Redox for Durable Lithium-Sulfur Batteries.

Xu Huifang H   Jiang Qingbin Q   Hui Kwan San KS   Wang Shuo S   Liu Lingwen L   Chen Tianyu T   Zheng Yunshan Y   Ip Weng Fai WF   Dinh Duc Anh DA   Zha Chenyang C   Lin Zhan Z   Hui Kwun Nam KN  

ACS nano 20240311 12


Catalytic conversion of polysulfides emerges as a promising approach to improve the kinetics and mitigate polysulfide shuttling in lithium-sulfur (Li-S) batteries, especially under conditions of high sulfur loading and lean electrolyte. Herein, we present a separator architecture that incorporates double-terminal binding (DTB) sites within a nitrogen-doped carbon framework, consisting of polar Co<sub>0.85</sub>Se and Co clusters (Co/Co<sub>0.85</sub>Se@NC), to enhance the durability of Li-S batt  ...[more]

Similar Datasets

| S-EPMC8655168 | biostudies-literature
| S-EPMC7293593 | biostudies-literature
| S-EPMC11783354 | biostudies-literature
| S-EPMC9640681 | biostudies-literature
| S-EPMC6385284 | biostudies-literature
| S-EPMC9962940 | biostudies-literature
| S-EPMC6941880 | biostudies-literature
| S-EPMC9089846 | biostudies-literature
| S-EPMC11827584 | biostudies-literature
| S-EPMC10924882 | biostudies-literature