Employing an environmentally friendly and economical approach to significantly improve the electrocatalytic activity for hydrogen evolution reaction (HER) has attracted widespread attention because of its enormous value and challenge. Herein, we report a series of FeP nanorod arrays (FeP NRAs) with polypyrrole (PPy) shell coating on carbon textiles (CTs) to improve the HER performance. The composite combines the high conductivity of PPy and synergistic effect between FeP and PPy, where the PPy coating remarkably reduces the apparent activation energy for HER and increases the turnover frequency of catalysts, thus the electrocatalytic performance of FeP@PPy/CTs hybrid nanorod arrays is significantly improved. Among them, the FeP@PPy/CTs-5 h catalyst exhibit superior HER performance with a low onset over-potential of 103.1 mV and a small Tafel slope of 49.2 mV/dec at 10 mA cm⁻², and as well as an excellent long-term stability during operation for 46 h. Notably, it shows efficient HER performance during various bending status, demonstrating that the stability and flexibility of FeP@PPy/CTs catalysts. The excellent electrocatalytic performance is promising for applications as a cost-effective non-noble-metal HER catalyst during electrochemical water splitting for large-scale hydrogen fuel production.

采用环境友好且经济的方法来显着提高析氢反应（HER）的电催化活性，因其巨大的价值和挑战而引起了广泛关注。在此，我们报告了一系列在碳织物 (CT) 上具有聚吡咯 (PPy) 壳涂层的 FeP 纳米棒阵列 (FeP NRA)，以提高 HER 性能。该复合材料结合了 PPy 的高导电性和 FeP 与 PPy 之间的协同效应，其中 PPy 涂层显着降低了 HER 的表观活化能并增加了催化剂的周转频率，因此 FeP@PPy/CTs 混合纳米棒阵列的电催化性能为显着改善。其中，FeP@PPy/CTs-5 h催化剂表现出优异的HER性能，起始过电位低至103。^-2，并且在运行 46 小时期间具有出色的长期稳定性。值得注意的是，它在各种弯曲状态下都表现出高效的 HER 性能，证明了 FeP@PPy/CTs 催化剂的稳定性和灵活性。优异的电催化性能有望在大规模氢燃料生产的电化学水分解过程中作为具有成本效益的非贵金属 HER 催化剂应用。