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Title: In Situ Growth of Ni2P–Cu3P Bimetallic Phosphide with Bicontinuous Structure on Self-Supported NiCuC Substrate as an Efficient Hydrogen Evolution Reaction Electrocatalyst

Journal Article · · ACS Catalysis
ORCiD logo [1];  [2];  [3];  [3];  [3];  [3];  [4];  [5];  [5]; ORCiD logo [3]
  1. Changsha Univ. of Science and Technology (China); Univ. of Connecticut, Storrs, CT (United States)
  2. Changsha Univ. of Science and Technology (China)
  3. Univ. of Connecticut, Storrs, CT (United States)
  4. Griffith Univ., Gold Coast (Australia)
  5. Central South Univ., Changsha (China)

A direct and effective approach is proposed to fabricate bimetallic phosphide Ni2P–Cu3P with controllable phase compn. and distribution for catalytic hydrogen evolution reaction (HER). Unlike previously reported precursors, a porous Ni-Cu alloy incorporated with graphitic carbon (NiCuC) prepd. via powder metallurgy is employed herein, and the generated Ni2P–Cu3P@NiCuC possesses a hierarchical porous structure and controllable phase compn. due to the high porosity and tunable Ni/Cu ratio of the precursor. With an optimal Cu content of 30.0 wt. %, the catalyst demonstrates the highest catalytic activity due to a synergistic interaction between different metallic phosphide sites and the facilitated mass transport. Meanwhile, d. functional theory (DFT) calcn. reveals that the at. interaction of Ni2P–Cu3P substantially lower the activation barrier for enhanced HER catalytic activity. Finally, the powder metallurgy provides an approach for the design of bimetallic phosphide electrocatalysts for HER and other catalytic applications.

Research Organization:
Univ. of Connecticut, Storrs, CT (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; National Natural Science Foundation of China (NSFC); Scientific Research Fund of Hunan Provincial Education Department; Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation
Grant/Contract Number:
FG02-86ER13622; 51701023; 51874049; 16C0026; 2016CL04
OSTI ID:
1598236
Journal Information:
ACS Catalysis, Vol. 9, Issue 8; ISSN 2155-5435
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 132 works
Citation information provided by
Web of Science

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Figures / Tables (8)