Cobalt Vanadium Heterointerface Modulated Co₂P/VP Heterostructure Electrocatalyst for Robust Water Splitting

The rational synthesis of efficient transitional metal phosphides (TMPs) could revolutionize green hydrogen production via water splitting. Hydrogen, with the highest energy density among fuels, stands out as an excellent alternative to address environmental issues and ensure sustainable future ener...

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Bibliographic Details
Published in:Composites Research 2024-08, Vol.37 (4), p.296
Main Authors: Purna Prasad Dhakal, Ganesh Bhandari, Hoang Tuan Nguyen, Duy Thanh Tran, Nam Hoon Kim, Joong Hee Lee
Format: Article
Language:Korean
Subjects:
HER
Heterostructure
OER
Phosphides
Water splitting
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Summary:The rational synthesis of efficient transitional metal phosphides (TMPs) could revolutionize green hydrogen production via water splitting. Hydrogen, with the highest energy density among fuels, stands out as an excellent alternative to address environmental issues and ensure sustainable future energy generation. However, the limited availability of state-of-the-art electrocatalysts like Pt/C and RuO₂, used for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively, necessitates the development of cost-effective and non-noble electrocatalysts for green hydrogen production. In this context, we present a novel heterointerface-modulated heterostructure design comprising ultrathin nanosheets of a 3D Co₂P/VP heterostructure on a conductive nickel foam substrate. This heterostructure demonstrates remarkably low overpotentials of 96 mV for HER and 237 mV for OER at 10 mA cm -2 . The material's robust electrochemical kinetics are further evidenced by low Tafel slopes of 68.28 mV dec -1 and 116.54 mV dec -1 , respectively.
ISSN:2288-2103