Fabrication of Ti/SnO /MnO2 anodes with enhanced catalytic performance for oxygen evolution reactions
Chen Ya, Yuan-he JIANG, Peng-hui PING, Jiuqing Liu, Xichang Shi
Abstract
This work is devoted to the development of a low cost dimensionally stable anode with high oxygen evolution catalytic activity for practical applications. For this purpose, a Ti/SnO x /MnO 2 anode was fabricated through an innovative strategy involving Sn electrodeposition, oxidation, and MnO 2 -layer preparation. The structure of the anode was characterized, and the oxygen evolution performance was evaluated in a H 2 SO 4 solution. The results show that compared with the Ti/SnO 2 /MnO 2 anode prepared by the conventional brushing−annealing process, the Ti/SnO x /MnO 2 anode fabricated through the innovative procedure exhibits a lower oxygen evolution potential and a nearly 40% longer accelerated lifespan. The superior oxygen evolution performance of the Ti/SnO x /MnO 2 anode is attributed to the distinctive SnO x intermediate layer fabricated through Sn electrodeposition followed by oxidation, which indicates the great potential of the anode as a dimensionally stable anode for metal electrowinning and hydrogen production by electrolysis, etc.