Tailoring WB morphology enables d-band centers to be highly active for high-performance lithium-sulfur battery

Yuwei Zhao, Chang Liu, Chenyang Zha, Jing Li, Chongguang Lyu, Kaixi Wang, Junfeng Li, Kwan San Hui, Linghai Zhang, Kwun Nam Hui

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The d-band centers of catalysts have exhibited excellent performance in various reactions. Among them, the enhanced catalytic reaction is considered a crucial way to power dynamics and reduce the "shuttle" effect in polysulfide conversions of lithium-sulfur batteries. Here, we report two-dimensional-shaped tungsten borides (WB) nanosheets with d-band centers, where the d orbits of W atoms on the (001) facets show greatly promoting the electrocatalytic sulfur reduction reaction. As-prepared WB-based Li-S cells exhibit excellent electrochemical performance for Li-ion storage. Especially, it delivers superior capacities of 7.7 mAh/cm2 under the 8.0 mg/cm2 sulfur loading, which is far superior to most other electrode catalysts. This study provides insights into the d-band centers as a promising catalyst of two-dimensional boride materials
Original languageEnglish
Article number108189
JournalChinese Chemical Letters
Volume34
Issue number11
Early online date3 Feb 2023
DOIs
Publication statusPublished - Nov 2023

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