TY - JOUR
T1 - Ultralow Ru Loading Transition Metal Phosphides as High-Efficient Bifunctional Electrocatalyst for a Solar-to-Hydrogen Generation System
AU - Chen, Ding
AU - Pu, Zonghua
AU - Lu, Ruihu
AU - Ji, Pengxia
AU - Wang, Pengyan
AU - Zhu, Jiawei
AU - Lin, Can
AU - Li, Hai Wen
AU - Zhou, Xiangang
AU - Hu, Zhiyi
AU - Xia, Fanjie
AU - Wu, Jingsong
AU - Mu, Shichun
N1 - Funding Information:
D.C. and Z.P. contributed equally to this work. This work was jointly supported by the Natural Science Foundation of China (No. 51672204) and the National Key Research and Development Program of China (No. 2016YFA0202603).
Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/1/1
Y1 - 2020/1/1
N2 - 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.
AB - 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.
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U2 - 10.1002/aenm.202000814
DO - 10.1002/aenm.202000814
M3 - Article
AN - SCOPUS:85085955892
SN - 1614-6832
VL - 10
JO - Advanced Energy Materials
JF - Advanced Energy Materials
IS - 28
M1 - 2000814
ER -
