We reported a network-like porous amorphous Co-Ni-B grown on carbon cloth (CC) through a facile one-step chemical reduction process which was used as a binder-free three dimension (3D) integrated electrode for hydrogen evolution reaction (HER). The Co-Ni-B/CC with Co/Ni molar ratio about 1:1 (Co-50Ni-B/CC) exhibited the best HER performance in alkaline medium, with a negligible onset overpotential (22 mV), a small Tafel slope (88.2 mV dec⁻¹) and excellent long-term stability. Specially, the HER activity of Co-50Ni-B/CC even exceeds that of commercial Pt/C at sufficiently high overpotential. The excellent HER performance of the Co-Ni-B/CC is attributed to a large number of active sites, the enhanced electron transfer process and the robust contact between catalyst and CC substrate.

我们报道了一种碳纤维布（CC）上通过一种简便的一步化学还原工艺生长的网络状多孔非晶态Co-Ni-B，该工艺用作无粘合剂的3维（3D）集成电极，用于放氢反应（HER） ）。Co / Ni摩尔比约为1：1（Co-50Ni-B / CC）的Co-Ni-B / CC在碱性介质中表现出最佳的HER性能，起伏电位可忽略不计（22 mV），Tafel斜率小（88.2 mV dec ^-1）和出色的长期稳定性。特别地，在足够高的超电势下，Co-50Ni-B / CC的HER活性甚至超过了商业Pt / C的HER活性。Co-Ni-B / CC的优异HER性能归因于大量的活性位点，增强的电子转移过程以及催化剂与CC底物之间的牢固接触。