Abstract: A central topic in electrocatalysis is the development of an efficient and cost-effective electrocatalyst for the oxygen evolution reaction (OER). Herein, we developed a Cr-doped NiCo LDH (Cr-NiCo LDH) nanocomposites on nickel foam (NF). The resultant nanohybrid exhibits a hierarchical structure composed of numerous nanowires which facilitates the exposure of a large number of reactive sites. Cr doping benefits for the formation of high-valence ions (Co3+ and Ni3+) near the surface of the electrocatalyst. The Cr-NiCo LDH-120/NF electrocatalyst presents the outstanding OER performance, with the lowest overpotentials of 273 and 329 mV at current densities of 10 and 100 mA·cm-2 respectively, the smallest Tafel slope of 59.83 mV·dec-1, and a remarkable stability over 48 h. This work presents a new approach for rationally designing highly-efficient and non-noble metal electrocatalysts.
雷琬莹, 谭自强, 杨鑫鑫, 张新曙, 杜易, 李世盛, 高智. Cr掺杂NiCo LDH/NF的制备及OER催化性能[J]. 材料导报, 2026, 40(6): 25030003-5.
LEI Wanying, TAN Ziqiang, YANG Xinxin, ZHANG Xinshu, DU Yi, LI Shisheng, GAO Zhi. Preparation of Cr Doped NiCo LDH/NF and Its OER Catalytic Performance. Materials Reports, 2026, 40(6): 25030003-5.
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