Electronic structure tailoring of CuCo 2 O 4 for boosting oxygen evolution reaction

被引:3
作者
Dong, Qinglong [1 ]
Wen, Bo [1 ]
Zhao, Xin [1 ]
Wang, Peiyi [2 ]
Lyu, Xiao [1 ]
机构
[1] Shenyang Ligong Univ, Sch Mat Sci & Engn, Shenyang 110159, Peoples R China
[2] Shenyang Ligong Univ, Inst Int Engn, Shenyang 110159, Peoples R China
基金
中国国家自然科学基金;
关键词
Water splitting; Electrocatalyst; Phosphorus; Oxygen evolution reaction; METAL-ORGANIC FRAMEWORKS; HYDROGEN EVOLUTION; EFFICIENT; ELECTROCATALYST; IDENTIFICATION; NANOSHEETS; REDUCTION; NANOTUBES; SURFACES; HYBRIDS;
D O I
10.1016/j.seppur.2024.128552
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Electronic structure tuning in metal oxides is a facile and effective strategy on boosting their catalytic oxygen evolution reaction (OER) performance. Here, we demonstrate the electronic structure tuning of CuCo2O4 by phosphorus (P) doping via in-situ diffusion method. The results suggest that due to more electrons transferred from P to the neighboring Co3+, the tuned Co is served as catalytic active sites for the enhanced OER performance. The synthesized P3.85-CCO/NF exhibits an overpotential of 250 mV at a current density of 10 mA cm-2, and a Tafel slope of 27 mV dec- 1, which performs an enhanced OER activity than that of IrO2/NF. Moreover, the P3.85-CCO/NF presents stable electrochemical performances upon long-time running for 30 h. Thus, the electronic structure tuning strategy by in-situ P diffusion method emerges as an effective approach on enhancing the catalytic OER performance for metal oxide electrocatalysts.
引用
收藏
页数:8
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