Strong phosphide-metaphosphate interaction in RuP/CoNiP4O12 for enhanced electrocatalytic water splitting

Zhao，Jianying1; Zhang，Yuanyuan1; Xia，Yu2,3; Zhang，Bin1; Du，Yunchen1; Song，Bo4; Wang，Hsing Lin2; Li，Siwei5; Xu，Ping1

2023-07-05

10.1016/j.apcatb.2023.122447

APPLIED CATALYSIS B-ENVIRONMENTAL   Impact Factor & Quartile

0926-3373

Strong metal-support interaction (SMSI) is a crucial concept in heterogeneous catalysis, which has been utilized to design efficient catalysts for electrocatalytic overall water splitting. Herein, a novel strong phosphide-metaphosphate interaction (SPmPI) is discovered in the RuP/CoNiPO catalyst for the first time. The SPmPI leads to efficient electron transfer from RuP to CoNiPO support, endowing the catalyst with a unique coordination environment of Ru-P and Ru-O, which is demonstrated to greatly facilitate the rate-determining water dissociation step. As a result, the RuP/CoNiPO catalyst with proper Ru-P and Ru-O coordination numbers requires an ultralow overpotential of 27 mV to deliver a current density of 10 mA cm for hydrogen evolution reaction (HER) in alkaline media. Moreover, the catalyst inherits the remarkable catalytic activity from the CoNiPO support for oxygen evolution reaction (OER), and therefore is also effective for overall water splitting (requiring 1.56 V to achieve 10 mA cm current density). This work not only reports a highly efficient catalyst for electrocatalytic overall water splitting, but also provides a novel concept of SPmPI for designing supported catalyst in heterogeneous catalysis.

Coordination environment Electrocatalysis Hydrogen evolution Strong phosphide-metaphosphate interaction Water splitting

English

Others

CHEMISTRY

2-s2.0-85148632710

Scopus

1.MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage,School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin,150001,China
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.School of Physics and Astronomy,University of Birmingham,Birmingham,Edgbaston,B152TT,United Kingdom
4.National Key Laboratory of Science and Technology on Advanced Composites in Special Environments,Harbin Institute of Technology,Harbin,150001,China
5.Institute of Industrial Catalysis,School of Chemical Engineering and Technology,Xi'an Jiaotong University,Xi'an,710049,China

Zhao，Jianying,Zhang，Yuanyuan,Xia，Yu,et al. Strong phosphide-metaphosphate interaction in RuP/CoNiP4O12 for enhanced electrocatalytic water splitting[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2023,328.

Zhao，Jianying.,Zhang，Yuanyuan.,Xia，Yu.,Zhang，Bin.,Du，Yunchen.,...&Xu，Ping.(2023).Strong phosphide-metaphosphate interaction in RuP/CoNiP4O12 for enhanced electrocatalytic water splitting.APPLIED CATALYSIS B-ENVIRONMENTAL,328.

Zhao，Jianying,et al."Strong phosphide-metaphosphate interaction in RuP/CoNiP4O12 for enhanced electrocatalytic water splitting".APPLIED CATALYSIS B-ENVIRONMENTAL 328(2023).