To fulfill the growing demand for green H₂ fuels, low-cost, efficient, and stable bifunctional electrocatalysts must be developed. Herein, a hierarchical CuO@Cu₃P/CF nanowire core-shell heterostructure with transferable active centers was developed for a bifunctional electrocatalyst with high activity. In this system, the transfer of electrochemically active centers between Cu₃P and CuO is used to facilitate the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER), respectively. Particularly, Cu₃P acts as the active center for HER, while the active center shifts to CuO for OER reaction, and Cu₃P acts as a co-catalyst to improve the conductivity of the system. Benefit from superhydrophilicity's high electrochemical surface area and synergistic effect of CuO core and Cu₃P shell, and CuO@Cu₃P/CF shown significant catalytic activity for hydrogen or oxygen evolution, requiring low overpotentials of 144 and 267 mV to achieve a current density of 10 mA cm⁻². In addition, the assembled CuO@Cu₃P/CF-based electrolyzer exhibit excellent overall water splitting performance with a low operating voltage of 1.75 V at 10 mA cm⁻² and a negligible decrease in catalytic activity. This gives encouraging evidence for the utility of our catalysts in application areas.

为了满足对绿色 H ₂燃料日益增长的需求，必须开发低成本、高效、稳定的双功能电催化剂。在此，开发了一种具有可转移活性中心的分级CuO@Cu _{3 P/CF纳米线核壳异质结构，用于具有高活性的双功能电催化剂。在该系统中，Cu 3} P 和 CuO之间电化学活性中心的转移分别用于促进析氢反应 (HER) 和析氧反应 (OER)。特别是，Cu ₃ P 充当 HER 的活性中心，而 OER 反应的活性中心转移到 CuO，而 Cu ₃P充当助催化剂以提高系统的电导率。得益于超亲水性的高电化学表面积以及 CuO 核和 Cu ₃ P 壳的协同效应，CuO@Cu ₃ P/CF 对析氢或析氧表现出显着的催化活性，需要 144 和 267 mV 的低过电位才能达到电流密度10 mA cm ^-2。此外，组装的 CuO@Cu ₃ P/CF 基电解槽表现出优异的整体水分解性能，在 10 mA cm ^-2下具有 1.75 V 的低工作电压和可忽略不计的催化活性降低。这为我们的催化剂在应用领域的实用性提供了令人鼓舞的证据。