Premium
Electrochemical Preparation of Ru/Co Bi‐layered Catalysts on Ti Substrates for the Oxygen Evolution Reaction
Author(s) -
Kim Jin Yeong,
Park Hyanjoo,
Kim Hoyoung,
Hwang Eunkyoung,
Ahn Sang Hyun,
Kim SooKil
Publication year - 2016
Publication title -
bulletin of the korean chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.237
H-Index - 59
ISSN - 1229-5949
DOI - 10.1002/bkcs.10853
Subject(s) - oxygen evolution , catalysis , electrochemistry , annealing (glass) , electrolysis , oxide , electrolysis of water , oxygen , materials science , chemical engineering , inorganic chemistry , chemistry , metallurgy , electrode , organic chemistry , electrolyte , engineering
Ru/Co/Ti catalysts prepared by two‐step electrodeposition and subsequent annealing were applied to the oxygen evolution reaction ( OER ) during acidic water electrolysis. The Co interlayers, which were electrodeposited for varying deposition times, strongly affected the morphology of the Ru/Co/Ti catalysts after annealing. Cracks and rolled‐up parts appeared, and Co oxide nanowalls became attached to the Ru surface. During the initial stages of the OER , a synergetic effect was observed between Ru and the Co oxides. The Ru/Co/Ti catalyst demonstrated approximately three to four‐fold higher activity than the Co interlayer‐free Ru/Ti catalyst.