Coupling Anodic Activity and Stability at Ni‐Based Non‐Oxide Catalysts via Coordinating Alcohol Oxidation and Oxygen Evolution
Yong Yan, Xinyu Liu, Yuguo Zhao, Hanwen Jian, Huan Zhou, Riyi Zhang, Dong Wang, Peter Schaaf, Lihua Wang, Guangsheng Guo, Xiayan WangABSTRACT
A Ni 2 P layer on Ni nanorod arrays is used to elucidate the dynamic coupling between alcohol oxidation (AOR) and oxygen evolution (OER). A cooperative region (1.50–1.56 V vs. RHE, [OH − ] < 2.0 M) boosts both TOF AOR and TOF OER , whereas a competitive region at higher potential/alkalinity suppresses AOR and compromises overall anodic performance. In situ Raman identifies NiOOH as the common active phase and reveals a complementary mechanism: OER enables NiOOH activation, while AOR drives NiOOH ordering and stabilizes the reconstructed interface, thereby mitigating Ni 2 P corrosion and sustaining higher currents. These insights provide practical guidance to engineer robust, low‐energy, value‐added anodes via controlled AOR‐OER coupling.