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Bifunctional Behavior of Pd/Ni Nanocatalysts on MOF‐Derived Carbons for Alkaline Water‐splitting
Author(s) -
Ipadeola Adewale K.,
Mwonga Patrick V.,
Ray Sekar C.,
Maphanga Rapela R.,
Ozoemena Kenneth I.
Publication year - 2020
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.202060427
Subject(s) - bifunctional , nanomaterial based catalyst , oxygen evolution , water splitting , nickel , catalysis , materials science , inorganic chemistry , metal organic framework , hydrogen , chemical engineering , adsorption , metal , chemistry , electrochemistry , metallurgy , electrode , organic chemistry , photocatalysis , engineering
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.