DataVXACS Applied Materials & InterfacesPaper
journal article·2025-11-26

Tuning the Band Structure of Co 3 Sn 2 S 2 Topological Semimetal for Oxygen Evolution in Alkaline Electrolytes

Jinyuan Dong, Silan Chen, Xiaotian Wang, Yuguang Mao, Xiaoxiao Jing, Zhixu Ouyang, Jiabao Ding, Jianjun Tian, Yujin Ji, Youyong Li, Wu-Jun Shi, Yang Han, Weifeng Zhang

ACS Applied Materials & Interfaces· Volume 17· Issue 47
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Source abstract

Abstract

Co 3 Sn 2 S 2 (CSS) possesses robust surface states and high conductivity derived from Co atoms with Weyl points located only 60 meV above the Fermi level ( E f ), revealing the probability of tuning the electronic band structure of CSS by doping with transition metal atoms. Here, Fe, Ni, and Cu atoms have been successfully incorporated into CSS, which turns out that the Fe 0.1 –CSS possesses better activity than CSS and IrO 2 with an overpotential of 298 mV to reach the current density of 10 mA cm –2 and a Tafel slope of 358.3 mV dec –1 in 1 M KOH. The Fe 0.1 –CSS also shows better activity and stability than IrO 2 as an anode for the anion exchange membrane water electrolyzer in 1 M KOH. Besides, the density functional theory results indicate that the band structure of CSS is adjusted by the incorporation of transition metal atoms, which is related to the regulation of E f and thus the variation in electrolytic performance. Our findings provide a strategy to further engineer the activity of a topological semimetal, which provides a direction toward material design for catalysis and beyond.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Advancements in Solid Oxide Fuel Cells · CO2 Reduction Techniques and Catalysts

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Henan Key Laboratory of Quantum Materials and Quantum Energy, School of Future Technology

Henan University

State Key Laboratory of Bioinspired Interfacial Materials Science, Institute of Functional Nano & Soft Materials (FUNSOM)

Soochow University

Center for Transformative Science

ShanghaiTech University

Shanghai High Repetition Rate XFEL and Extreme Light Facility (SHINE)

Qingdao Innovation and Development Center

Harbin Engineering University

College of Power and Energy Engineering

Institute of Quantum Materials and Physics

Henan Academy of Sciences

Funding

Science and Technology Innovation Talents in Universities of Henan Province · Nanjing University · National Natural Science Foundation of China · Henan University · Intelligence Introduction Plan of Henan Province in 2021 · Plan for Leading Talent of Fundamental Research of the Central China in 2020

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