@article{Sun2023, 
author = {Qingjia Sun and Guanxing Xu and Bingyan Xiong and Lisong Chen and Jianlin Shi},
title = {Anion-tuned nickel chalcogenides electrocatalysts for efficient 2e− ORR towards H2O2 production in acidic media},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {4},
pages = {4729-4735},
keywords = {oxygen reduction reaction, electrosynthesis, hydrogen peroxide, anions},
url = {https://www.sciopen.com/article/10.1007/s12274-022-5160-2},
doi = {10.1007/s12274-022-5160-2},
abstract = {Electrocatalytic 2e− oxygen reduction reaction (2e− ORR) is a promising approach to producing H2O2 at ambient temperature and pressure especially in acidic media, which, however, is hindered by the high cost of precious metal-based electrocatalysts. Hence, the development of efficient earth-abundant electrocatalysts and reaction mechanism exploration for H2O2 production by 2e− ORR in acidic solution are critically important but remain challenging at present. In this work, NiSe2 has been developed as a novel and high-performance 2e− ORR electrocatalyst in acidic media, moreover, using nickel chalcogenides as the models, the influence of different anion species (Se22−, S22−, and O2−) on 2e− ORR electrocatalytic performance of the catalysts has been investigated. The synthesized NiSe2 exhibits outstanding 2e− ORR performance of high selectivity (90%) and long-term durability (12 h). The maximum H2O2 concentration of NiSe2 reaches 988 ppm, which is the highest among all the reported transition metal chalcogenides. This work demonstrates a novel point of view in anion tuning for designing high-efficiency transition-metal-based electrocatalysts for 2e− ORR.}
}