• Ultra-thin CoNiO₂ nanosheet with rich oxygen defects anchored on the vertically arranged Ni nanotube arrays (O_d-CNO@Ni NTs) is successfully constructed.

• The O_d-CNO@Ni NTs electrode delivers extraordinary electrochemical performance.

• The theoretical calculations reveal that oxygen defects effectively improve the electrochemical kinetics and the surface electronic state structure of O_d-CNO @ Ni NTs, thus exhibiting strong OH⁻ adsorption capacity.

中文翻译：

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氧缺陷增强阴离子吸附能，实现镍锌电池超倍率耐用阴极

• _{成功构建了锚定在垂直排列的Ni纳米管阵列（O d} -CNO@Ni NTs）上的具有富氧缺陷的超薄CoNiO _{2纳米片。}

• O _d -CNO@Ni NTs 电极具有非凡的电化学性能。

• 理论计算表明，氧缺陷有效地改善了O _d -CNO @ Ni NTs的电化学动力学和表面电子态结构，从而表现出很强的OH ^- 吸附能力。