With the increasing issues of the energy crisis and environmental pollution, the development of clean energy has become an urgent task. Herein, self-supporting graphene (SSG) that could serve as the three-dimensional catalyst support is developed by electrochemically intercalating the flexible graphite paper (FGP) in 1 M KOH. Then, the Ni-base alloy is deposited on the SSG by electroless plating. The resulting electrode (Ni–Cu–P/SSG) exhibits excellent hydrogen evolution reaction (HER) electrocatalytic performance in 1 M KOH. The Ni–Cu–P/SSG catalyst just requires the overpotentials of 75 and 219 mV to reach 10 and 100 mA cm⁻², respectively. Besides, the Ni–Cu–P/SSG still maintains superior HER catalytic activity after the stability test of 12 h. The Ni–Cu–P/SSG composite catalyst with high catalytic activity, remarkable stability and facile preparation method has a significant influence on the extension of renewable energy preparation and application.

随着能源危机和环境污染问题的日益严重，清洁能源的发展已成为当务之急。在本文中，可以通过在1 M KOH中电化学插入柔性石墨纸（FGP）来开发可用作三维催化剂载体的自支撑石墨烯（SSG）。然后，通过化学镀将Ni基合金沉积在SSG上。生成的电极（Ni-Cu-P / SSG）在1 M KOH中表现出出色的氢释放反应（HER）电催化性能。Ni–Cu–P / SSG催化剂仅需要75和219 mV的过电势即可达到10和100 mA cm ^-2， 分别。此外，经过12 h的稳定性测试，Ni-Cu-P / SSG仍保持优异的HER催化活性。Ni-Cu-P / SSG复合催化剂具有较高的催化活性，显着的稳定性和简便的制备方法，对可再生能源的制备和应用范围的扩展具有重大影响。