Modulating and constructing interface engineering is an efficient strategy to enhance catalytic activity for water splitting. Herein, a hybrid nanoarray structure of V‐CoP@a‐CeO₂, where “a” represents amorphous, integrated into carbon cloth is fabricated for water splitting. The synergy effect between V and CeO₂ can increase the electron density of Co atoms at active sites, further optimizing the Gibbs free energy of H* adsorption energy (ΔG_H*). Besides, V‐CoP@a‐CeO₂ possesses lower water adsorption/dissociation energies, enabling accelerated reaction kinetics in alkaline media. As expected, the V‐CoP@a‐CeO₂ exhibits superior performance toward the hydrogen evolution reaction and the oxygen evolution reaction. More importantly, a two‐electrode electrolyzer combined with an electrocatalyst of V‐CoP@ a‐CeO₂ only demands that voltages of electrolytic cell are 1.56 and 1.71 V to achieve the current densities of 10 and 100 mA cm⁻², respectively. This work provides guidance for the design or optimization of materials for water electrolysis and beyond.

中文翻译：

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电子再分配：CoP上接口工程的构建和调制，以增强整体水分配

调节和构建界面工程是提高水分解催化活性的有效策略。在此，制造了V-CoP @ a-CeO ₂的杂化纳米阵列结构，其中“ a”代表无定形，并集成到碳布中用于水分解。V和CeO ₂之间的协同作用可以增加活性位上Co原子的电子密度，从而进一步优化H *吸附能的吉布斯自由能（ΔG _{H *}）。此外，V-CoP @ a-CeO ₂具有较低的水吸附/解离能，从而可以加快在碱性介质中的反应动力学。不出所料，V-CoP @ a-CeO ₂在氢气析出反应和氧气析出反应方面表现出优异的性能。更重要的是，将两电极电解槽与V-CoP @ a-CeO ₂的电催化剂结合使用，仅要求电解池的电压为1.56 V和1.71 V即可达到10和100 mA cm ^-2的电流密度。这项工作为水电解及其他材料的设计或优化提供了指导。