Electrochemical oxygen evolution reaction of controllable self-assembled CuCo2O4.

Autor: Shi, Song, Xiang, Jun, Loy, Sroeurb, Meng, Xiang-Sen, Yang, Wen-Duo, Zhao, Rong-Da, Wu, Fu-Fa, Ma, Dong-Mei, Li, Mei-Ting, Li, Jia
Zdroj: Ionics; Sep2022, Vol. 28 Issue 9, p4381-4394, 14p
Abstrakt: CuCo2O4 is ascribed to the effective OER catalysts due to its different oxidation states and high active sites. In this paper, CuCo2O4 catalysts with different micromorphologies are synthesized by using urea and ammonium fluoride, which can affect the nucleation ability of compounds. The OER catalytic performance of CuCo2O4/NF catalyst has been greatly improved with the synergistic effect of urea and ammonium fluoride. The CCNO-3 sample owns a small overpotential of 198 mV at 10 mA cm−2 and that of 309 mV at 20 mA cm−2. After 14 h of long cycle, the CuCo2O4/NF catalyst also presents stability under the synergistic effect of urea and ammonium fluoride. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index