Developing efficient and durable oxygen evolution reaction (OER) catalysts holds great promise for green hydrogen production via seawater electrolysis, but remains a challenge. Herein, we report a Co-doped Ni₃S₂ nanosheet array on Ni foam (Co-Ni₃S₂/NF) as a high-efficiency OER electrocatalyst for seawater. In alkaline conditions, Co-Ni₃S₂/NF requires an overpotential of only 368 mV to drive 100 mA·cm⁻², superior to Ni₃S₂/NF (385 mV). Besides, it exhibits at least 50-h continuous electrolysis.

中文翻译：

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共掺杂 Ni3S2 纳米片阵列：一种用于碱性海水氧化的高效电催化剂

开发高效且耐用的析氧反应（OER）催化剂为通过海水电解生产绿色氢气带来了巨大希望，但仍然是一个挑战。在此，我们报道了镍泡沫上的钴掺杂Ni ₃ S ₂纳米片阵列（Co-Ni ₃ S ₂ /NF）作为海水的高效OER电催化剂。在碱性条件下，Co-Ni ₃ S ₂ /NF仅需368 mV的过电位即可驱动100 mA·cm ^-2，优于Ni ₃ S ₂ /NF (385 mV)。此外，它还具有至少50小时的连续电解能力。