In response to the energy crisis, molybdenum-based catalyst has been proposed as a high-performance electrocatalytic material due to its low price and excellent HER performance. However, in contrast with its excellent HER performance, its poor OER performance often limits practical application as a high-performance overall water splitting catalyst. In this study, Prussian blue analogue (PBA) is grown in-situ on molybdenum-based nanosheet spheres by a simple and ingenious method and then subjected to phosphorization. The resulting composite catalyst exhibits highly efficient overall water splitting performance, overpotentials at current densities of 10 mA cm⁻² and 100 mA cm⁻² for the HER and OER are −61 mV and 268 mV, respectively. Moreover, an alkaline electrolyzer makes up by the catalyst both as positive and negative can reach a cell voltage 1.494 V at 10 mA cm⁻² for the overall water splitting. This method has provided a new strategy to effective combine PBA and molybdenum-based catalyst.

响应于能源危机，由于钼基催化剂的低价格和优异的HER性能，已经提出将其作为高性能电催化材料。然而，与其优异的HER性能相反，其差的OER性能通常限制了作为高性能整体水分解催化剂的实际应用。在这项研究中，普鲁士蓝类似物（PBA）通过简单而巧妙的方法在基于钼的纳米片上原位生长，然后进行了磷化处理。所得复合催化剂表现出高效的总水分解性能，在10 mA cm ^-2和100 mA cm ^-2的电流密度下具有超电势HER和OER的分别为-61 mV和268 mV。此外，由催化剂组成的碱性电解槽，正负极均可在10 mA cm ^-2的条件下达到1.494 V的电池电压，以进行整体水分解。该方法提供了有效结合PBA和钼基催化剂的新策略。