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Preparation of Practical High‐Performance Electrodes for Acidic and Alkaline Media Water Electrolysis
Author(s) -
Moon Gunhee,
Wang Yue,
Kim Seongseop,
Budiyanto Eko,
Tüysüz Harun
Publication year - 2022
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.202102114
Subject(s) - overpotential , electrocatalyst , oxygen evolution , electrolysis , electrode , oxide , electrolysis of water , materials science , chemical engineering , inorganic chemistry , metal , water splitting , nanotechnology , chemistry , catalysis , electrochemistry , metallurgy , organic chemistry , electrolyte , engineering , photocatalysis
Abstract The synthesis of electrocatalyst and the electrode preparation were merged into a one‐step process and proved to be a versatile method to synthesize metal oxide electrocatalysts on the conductive carbon paper (CP). Very simply, the metal precursor deposited on the CP was thermally treated by a torch‐gun for just 6 s, resulting in the formation of RuO 2 , Co 3 O 4 , and mixed oxide nanoparticles. The material could be directly used as working electrode for oxygen evolution reaction (OER). Compared with commercial and other state‐of‐the‐art electrocatalysts, the fabricated electrode showed a superior electrocatalytic activity for OER in 1 m HClO 4 and 1 m KOH in terms of not only a low overpotential to reach 10 mA cm −2 but also a high current density at 1.6 V RHE with satisfying a long‐term stability. The novel strategy without requiring time‐consuming and uneconomical steps could be expanded to the preparation of various metal oxides on conductive substrates towards diverse electrocatalytic applications.