The design of efficient and low-cost electrocatalysts for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is highly desirable for water splitting. Here, Ce-doped CoP was prepared through synthesizing a Ce-ZIF-67 precursor coupled with a phosphorization process. The introduction of Ce into CoP can lead to electronic modulation of Co, thus lowering the energy barrier for both to deliver better activity. The CoP with an optimized Ce-doping level exhibits high HER and OER performance and can be used as a highly efficient catalyst for water splitting. Here, Ce doping can introduce electronic modulation, optimizing the adsorption of H on CoP to promote HER performance as well as reduce the energy barrier of the potential-limiting step by facilitating electron transfer from Ce to Co. This work provides new insights into the development of a high-performance water-splitting electrocatalyst.

中文翻译：

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Ce掺杂的电子调制CoP作为高效的水分解电催化剂

设计用于氢分解反应（HER）和氧分解反应（OER）的高效，低成本的电催化剂，对于水的分解是非常需要的。在此，通过合成Ce-ZIF-67前驱体并进行磷化处理来制备Ce掺杂的CoP。在CoP中引入Ce可以导致Co的电子调制，因此降低了两者的能垒以提供更好的活性。具有优化的Ce掺杂水平的CoP具有很高的HER和OER性能，可以用作高效的水分解催化剂。在这里，Ce掺杂可以引入电子调制，优化H在CoP上的吸附，从而提高HER性能，并通过促进电子从Ce转移到Co来降低电势限制步骤的能垒。