Mo-Doped α-MnO2 for Enhanced Electrocatalytic Water Oxidation

被引：0

作者：

Chen, Ying ^{[1
]}

Yang, Shujiao ^{[1
]}

Wang, Ting ^{[1
]}

Li, Sisi ^{[1
]}

Liu, Xiaohan ^{[1
]}

Zhang, Wei ^{[1
]}

Cao, Rui ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Minist Educ, Sch Chem & Chem Engn, Key Lab Appl Surface & Colloid Chem, Xian 710119, Shaanxi, Peoples R China

来源：

CHEMSUSCHEM | 2025年 / 18卷 / 05期

基金：

中国国家自然科学基金;

关键词：

alpha-MnO2; Water oxidation; Oxygen evolution reaction; Electrocatalysis; Oxygen vacancy;

D O I：

10.1002/cssc.202401553

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Manganese is a key metal involved in the catalysis of natural photosynthesis. Thus, the investigation of Mn-based electrocatalysts for water oxidation is of high importance. This work reports the doping of Mo into alpha-MnO2 nanorods to improve the water oxidation performance. The doping of Mo can transform the microstructure of alpha-MnO2 from nanorods into nanosphere superstructures. As a dopant, Mo expands the alpha-MnO2 lattice to result in a decrease in the average oxidation state of Mn and the generation of oxygen vacancies, which are beneficial to water oxidation catalysis. Under optimized doping, the overpotential of 2.34 wt.% Mo/alpha-MnO2 is reduced by 80 mV (at 10 mA/cm2) compared with pure alpha-MnO2.

引用

页数：6

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