Ultralow Ru Loading Transition Metal Phosphides as High-Efficient Bifunctional Electrocatalyst for a Solar-to-Hydrogen Generation System

被引：220

作者：

Chen, Ding ^{[1
,2
]}

Pu, Zonghua ^{[1
]}

Lu, Ruihu ^{[3
]}

Ji, Pengxia ^{[1
]}

Wang, Pengyan ^{[1
]}

Zhu, Jiawei ^{[1
]}

Lin, Can ^{[1
]}

Li, Hai-Wen ^{[4
]}

Zhou, Xiangang ^{[1
,5
]}

Hu, Zhiyi ^{[1
,5
]}

Xia, Fanjie ^{[1
,5
]}

Wu, Jingsong ^{[1
,5
]}

Mu, Shichun ^{[1
,2
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

[2] Adv Energy Sci & Technol Guangdong Lab, Foshan Xianhu Lab, Xianhu Hydrogen Valley 528200, Foshan, Peoples R China

[3] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Int Sch Mat Sci & Engn, Wuhan 430070, Peoples R China

[4] Kyushu Univ, Platform Inter Transdisciplinary Energy Res, Int Res Ctr Hydrogen Energy, Int Inst Carbon Neutral Energy Res, Fukuoka 8190395, Japan

[5] Wuhan Univ Technol, NRC Nanostruct Res Ctr, Wuhan 430070, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2020年 / 10卷 / 28期

关键词：

bifunctional electrocatalysts; hydrogen evolution reaction; metal-organic framework derivatives; oxygen evolution reaction; water splitting; EVOLUTION REACTION; CATALYSIS; OXYGEN; NANOPARTICLES; COBALT; FOAM;

D O I：

10.1002/aenm.202000814

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Water splitting is a promising technology for sustainable conversion of hydrogen energy. The rational design of oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) bifunctional electrocatalysts with superior activity and stability in the same electrolyte is the key to promoting their large-scale applications. Herein, an ultralow Ru (1.08 wt%) transition metal phosphide on nickel foam (Ru-MnFeP/NF) derived from Prussian blue analogue, that effectively drivies both the OER and the HER in 1 m KOH, is reported. To reach 20 mA cm(-2) for OER and 10 mA cm(-2) for HER, the Ru-MnFeP/NF electrode only requires overpotentials of 191 and 35 mV, respectively. Such high electrocatalytic activity exceeds most transition metal phosphides for the OER and the HER, and even reaches Pt-like HER electrocatalytic levels. Accordingly, it significantly accelerates full water splitting at 10 mA cm(-2) with 1.470 V, which outperforms that of the integrated RuO2 and Pt/C couple electrode (1.560 V). In addition, the extremely long operational stability (50 h) and the successful demonstration of a solar-to-hydrogen generation system through full water splitting provide more flexibility for large-scale applications of Ru-MnFeP/NF catalysts.

引用

页数：10

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