Journal
ELECTROANALYSIS
Volume 32, Issue 12, Pages 3060-3074Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.202060427
Keywords
Pd; Ni; MOFDC electrocatalyst; Alkaline water-splitting; Kinetic current; Activation energy; Density functional theory
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Funding
- Universiy of the Witwatersrand (WITS)
- National Research Foundation (NRF)
- Department of Science and Innovation (DSI)
- World Academy of Science
- DSI-NRF-TWAS
- WITS University
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Metal-organic framework derived carbon (MOFDC) serves as supporting platforms for PdNi catalyst (Pd/Ni/MOFDC) and acid-treated nickel counterpart (Pd/AT-Ni/MOFDC). The two Pd-based electrocatalysts are tested for alkaline water-splitting (i. e., hydrogen evolution (HER) and oxygen evolution reactions (OER)). The results reveal better HER and OER kinetics for Pd/Ni/MOFDC than Pd/AT-Ni/MOFDC. DFT calculations show that the high performance of the Pd/Ni/MOFDC can be associated with its high conductivity toward adsorbed OH compared to the Pd/AT-Ni/MOFDC counterpart. The superior overall water-splitting of Pd/Ni/MOFDC describes the synergy between Ni/Ni(OH)(2) interface and nanostructured Pd for possible future application in an electrolyzer.
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