The development of efficient and durable non-noble metal catalysts remains a challenge in electrocatalytic water splitting applications. To address this, a bifunctional catalyst involving hierarchical NiCo₂O₄@Ni₂P nanorods grown on nickel nanorod arrays (NiCo₂O₄@Ni₂P/NAs) was designed and fabricated in this study for overall water splitting that provided high activity and acceptable stability. And if used as the cathode and anode in alkaline media, the NiCo₂O₄@Ni₂P/NAs only required 1.58 V to achieve a current density of 10 mA cm⁻², which is superior to most reported catalysts and can be attributed to a unique core-shell structure and coexisting crystalline/amorphous Ni₂P phases.

在电催化水分解应用中，开发高效耐用的非贵金属催化剂仍然是一个挑战。为了解决这个问题，一个双功能催化剂包括分层镍钴₂ ö ₄ @Ni ₂ P纳米棒上生长镍纳米棒阵列（镍钴₂ ö ₄ @Ni ₂ P / NAS）的设计和制造在本研究中为整体水分解，所提供的高活性和可接受的稳定性。而如果用作阴极和阳极在碱性介质中，镍钴₂ ö ₄ @Ni ₂ P / NAS将只需要1.58 V到实现为10mA cm 2的电流密度^-2，它优于大多数报道的催化剂，并且可以归因于独特的核-壳结构和共存的结晶/非晶态Ni ₂ P相。