The Effect of Ni/Co Ratio on the Morphology and OER Performance of NiCo-LDH/NF
DOI:
https://doi.org/10.53469/wjimt.2025.08(04).20Keywords:
Layered double hydroxide, Self-supporting electrode, Electrocatalysis, Oxygen evolution reactionAbstract
Electrochemical water splitting is a promising technology for the sustainable conversion, storage and transport of hydrogen energy. Finding earth-abundant, highly active and durable oxygen evolution reaction (OER) electrocatalysts to replace precious metal-based catalysts is of great significance for the large-scale application of water electrolysis. Designing electrodes with a large number of active sites and high specific surface area is an effective strategy to improve electrocatalytic performance. In this paper, a series of NiCo-LDH/NF catalysts with different nanoneedle morphologies were prepared by a simple hydrothermal method on a nickel foam (NF) conductive substrate by adjusting the molar ratio of nickel to copper (2:4, 4:4 and 8:4 mmol). The combination of layered double hydroxide (NiCo-LDH) and NF can ensure a larger active area and provide an effective new way for electron transfer. The formed self-supporting electrode has better OER performance. This work provides new insights into OER under alkaline conditions.
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