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- Title
The Rapid Preparation of Efficient MoFeCo-Based Bifunctional Electrocatalysts via Joule Heating for Overall Water Splitting.
- Authors
Ao Zhou; Wei-Jian Guo; Yue-Qing Wang; Jin-Tao Zhang
- Abstract
Water electrolysis is an available way to obtain green hydrogen. The development of highly efficient electrocatalysts is a current research hotspot for water splitting, but it remains challenging. Herein, we demonstrate the synthesis of a robust bifunctional multi-metal electrocatalysts toward water splitting via the rapid Joule-heating conversion of metal precursors. The composition and morphology were well regulated via altering the ratio of metal precursors. In particular, the trimetal MoC/FeO/CoO/carboncloth (CC) electrode revealed the outstanding bifunctional electrocatalytic performance due to the unique composition and large electrochemical active surface area. Typically, the MoC/FeO/CoO/CC catalyst needed low overpotentials of 121 and 268 mV toreach 10 mA.cm-2 toward HER and OER in 1 mol.L -1 KOH solution, respectively. When used as both cathode and anode, a small potential of 1.69 V was required to achieve 10 mA.cm-2 for overall water splitting and an impressive stability for 25 h was observed.This facile and rapid Joule heating strategy offers guideline for rational manufacture of bimetal or multi-metal electrocatalysts toward diverse application.
- Subjects
WATER electrolysis; ELECTROCATALYSTS; LAMINATED metals; RESISTANCE heating; CATHODES
- Publication
Journal of Electrochemistry, 2022, Vol 28, Issue 9, p1
- ISSN
1006-3471
- Publication type
Article
- DOI
10.13208/j.electrochem.2214007