Simple Chemical Solution Deposition of Co₃O₄ Thin Film Electrocatalyst for Oxygen Evolution Reaction.
Oxygen evolution reaction (OER) is the key reaction in electrochemical processes, such as water splitting, metal-air batteries, and solar fuel production. Herein, we developed a facile chemical solution deposition method to prepare a highly active Co3O4 thin film electrode for OER, showing a low overpotential of 377 mV at 10 mA/cm(2) with good stability. An optimal loading of ethyl cellulose additive in a precursor solution was found to be essential for the morphology control and thus its electrocatalytic activity. Our results also show that the distribution of Co3O4 nanoparticle catalysts on the substrate is crucial in enhancing the inherent OER catalytic performance.
Clean Energy Research Center, Korea Institute of Science and Technology , 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Republic of Korea.|Korea University of Science and Technology , 176 Gajung-dong, 217 Gajungro Yuseong-gu, Daejeon 305-350, Republic of Korea.
Hyo Sang
HS
Jeon
Clean Energy Research Center, Korea Institute of Science and Technology , 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Republic of Korea.
Michael Shincheon
MS
Jee
Clean Energy Research Center, Korea Institute of Science and Technology , 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Republic of Korea.
Haeri
H
Kim
Clean Energy Research Center, Korea Institute of Science and Technology , 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Republic of Korea.|Green School, Korea University , Anam-dong Seongbuk-gu, Seoul 136-713, Republic of Korea.
Su Jin
SJ
Ahn
Clean Energy Research Center, Korea Institute of Science and Technology , 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Republic of Korea.|Korea University of Science and Technology , 176 Gajung-dong, 217 Gajungro Yuseong-gu, Daejeon 305-350, Republic of Korea.
Yun Jeong
YJ
Hwang
Clean Energy Research Center, Korea Institute of Science and Technology , 39-1 Hawolgok-dong, Seongbuk-gu, Seoul 136-791, Republic of Korea.|Korea University of Science and Technology , 176 Gajung-dong, 217 Gajungro Yuseong-gu, Daejeon 305-350, Republic of Korea.|Green School, Korea University , Anam-dong Seongbuk-gu, Seoul 136-713, Republic of Korea.
Byoung Koun
BK
Min
Co3O4; OER; chemical solution deposition; electrocatalyst; water splitting