NiCo₂O₄ nanoframes with a nanosheet surface are fabricated using Cu₂O nanoframes as a template. The size of the NiCo₂O₄ nanoframe is about 450 nm, and the thickness of the surface nanosheet is about 10 nm. Compared with Co₃O₄ and NiO nanoframes, NiCo₂O₄ nanoframes as electrocatalysts demonstrate much higher catalytic activity and stability for the oxygen evolution reaction (OER). The superior electrocatalytic performance of NiCo₂O₄ nanoframes might be attributed to the large surface area and synergistic effect of Ni and Co.

中文翻译：

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镍钴₂ ö _4个nanoframes与纳米片表面作为用于析氧反应高效电催化剂†

镍钴₂ ö ₄ nanoframes与纳米片表面用Cu制造的₂ önanoframes作为模板。的镍钴的大小₂ ö ₄ nanoframe是约450nm，并且表面纳米片的厚度为约10nm。与Co ₃ O ₄和NiO纳米框架相比，NiCo ₂ O ₄纳米框架作为电催化剂表现出更高的催化活性和对氧释放反应（OER）的稳定性。NiCo ₂ O ₄纳米框架的优异电催化性能可能归因于Ni和Co的大表面积以及协同效应。