Self-supported iron-based bimetallic phosphide catalytic electrode for efficient hydrogen evolution reaction at high current density

Zuo，Ziteng1; Zhang，Xian2; Peng，Ouwen1; Shan，Lianwei3; Xiang，Shengling1; Lian，Qing1; Li，Ningxue1; Mi，Guojun1; Amini，Abbas4; Cheng，Chun1,5

2024

10.1039/d3ta06035g

Journal of Materials Chemistry A   影响因子和分区

2050-7488

2050-7496

Iron (Fe)-based materials, which are abundant in Earth's crust, can be competent candidates as electrocatalysts for large-scale and sustainable alkaline hydrogen evolution reaction (HER); however, unlocking their huge potential critically relies on the rational integration of their structures and electrode materials. Herein, we report the construction of FeP-based bimetallic electrodes through a facile soaking-phosphorization approach. The hierarchical structure of porous iron foam (IF)-nanosheet arrays (NAs) endows enhanced reaction kinetics under high current densities. Modification with different transition metal cations evidently improves the intrinsic catalytic activity of FeP, among which cobalt-modified FeP (CoFe-P) shows the best performance. The optimized CoFe-P NAs/IF electrode exhibits an outstanding catalytic performance in the HER in alkaline media, with a current density of 10 mA cm at an extremely low overpotential of 40 mV. Additionally, at high current densities of 500 and 1000 mA cm, the electrode requires impressively low overpotentials of 151 and 162 mV, respectively. Furthermore, the catalytic performance experiences minimal degradation after a stability test at 500 mA cm for 200 hours, suggesting the exceptional stability of the CoFe-P NAs/IF electrode.

SCI ; EI

英语

第一 ; 通讯

2-s2.0-85184509741

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.School of Resources and Environmental Engineering,Wuhan University of Technology,Wuhan,430070,China
3.School of Materials Science and Chemical Engineering,Harbin University of Science and Technology,Harbin,150040,China
4.Center for Infrastructure Engineering,Western Sydney University,2751,Australia
5.Guangdong Provincial Key Laboratory of Energy Materials for Electric Power,Southern University of Science and Technology,Shenzhen,518055,China

Zuo，Ziteng,Zhang，Xian,Peng，Ouwen,et al. Self-supported iron-based bimetallic phosphide catalytic electrode for efficient hydrogen evolution reaction at high current density[J]. Journal of Materials Chemistry A,2024.

Zuo，Ziteng.,Zhang，Xian.,Peng，Ouwen.,Shan，Lianwei.,Xiang，Shengling.,...&Cheng，Chun.(2024).Self-supported iron-based bimetallic phosphide catalytic electrode for efficient hydrogen evolution reaction at high current density.Journal of Materials Chemistry A.

Zuo，Ziteng,et al."Self-supported iron-based bimetallic phosphide catalytic electrode for efficient hydrogen evolution reaction at high current density".Journal of Materials Chemistry A (2024).