CoFe phosphide conversion to heterojunction metal phosphide (CoFeP) electrocatalysts for water splitting

被引：3

作者：

Yu, Hai ^{[1
,2
]}

Ma, Yingying ^{[1
,2
]}

Pan, Yang ^{[1
,2
]}

Su, Liwen ^{[1
,2
]}

Ning, Xinyu ^{[1
,2
]}

Shen, Xinyi ^{[1
,2
]}

Lv, Jianguo ^{[1
,2
]}

Zhao, Min ^{[1
,2
]}

Wang, Congrong ^{[1
,2
]}

Wang, Cunyong ^{[1
,2
]}

Zhang, Miao ^{[3
]}

Yang, Lei ^{[4
]}

Zhong, Jin ^{[5
]}

机构：

[1] Hefei Normal Univ, Sch Phys & Mat Engn, Educ Dept Anhui Prov, Hefei 230601, Peoples R China

[2] Hefei Normal Univ, Educ Dept Anhui Prov, Key Lab Photoelect Detect Sci & Technol, Hefei 230601, Peoples R China

[3] Anhui Univ, Sch Phys & Mat Sci, Hefei 230039, Peoples R China

[4] Hefei Univ, Dept Chem & Mat Engn, Hefei 230601, Peoples R China

[5] Hefei Normal Univ, Sch Comp Sci & Technol, Hefei 230601, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS | 2024年 / 308卷

基金：

中国国家自然科学基金;

关键词：

CoFeP electrocatalyst; Water splitting; Phosphide; HER; OER; HYDROGEN EVOLUTION; EFFICIENT; ALKALINE; PHOTOACTIVITY; PERFORMANCE; NANOWIRES; ARRAYS; NICOP;

D O I：

10.1016/j.mseb.2024.117589

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Many researchers have made efforts on designing and synthesizing catalytic active site as well as deciphering how exactly they catalyze the reaction to obtain electrocatalysts with superior water splitting activity. However, the development of high-performance dual-functional non-precious metal electrocatalysts for Hydrogen Evolution Reaction (HER) and Oxygen Evolution Reaction (OER) remains challenging. In this study, CoFe undergoes in one-step phosphorylation reaction converted to Fe2P, 2 P, CoP2 2 and Co2P, 2 P, abbreviated as heterojunction metal phosphide (CoFeP). The Co/Fe ratio can be flexibly adjusted by controlling the content of Co in the synthesis process, which results in CoFeP with different morphologies. Benefiting from the porous structure and higher catalytic active sites, the Co-0.0032-FeP presents a lower overpotential of 127 mV and 266 mV for HER and OER of 10 mA cm-- 2 in a KOH solution, respectively. In addition, the low Tafel Slope and stable current density of Co0.0032-FeP indicate fast kinetics and high stability in the HER.

引用

页数：8

共 66 条

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