It is of great significance to develop a highly active, durable and inexpensive bifunctional electrocatalyst for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). Herein, we report a tungsten-doped nickel phosphide nanosheets based on carbon cloth (W–Ni₂P NS/CC) as an efficient bifunctional catalyst through simple hydrothermal and phosphorization for overall water splitting in 1 M KOH. The W–Ni₂P NS/CC exhibits excellent electrochemical performance with low overpotentials for HER (η₁₀ = 71 mV, η₅₀ = 160 mV) and OER (η₂₀ = 307 mV, η₅₀ = 382 mV) in 1 M KOH, as well as superior long-term stability. Moreover, W–Ni₂P NS/CC as a bifunctional catalyst reveals remarkable activity with a low voltage of 1.55 V to reach a current density of 20 mA cm⁻². This work provides a viable bifunctional catalyst for the overall water splitting.

开发一种用于析氢反应（HER）和析氧反应（OER）的高活性、耐用且廉价的双功能电催化剂具有重要意义。在此，我们报道了一种基于碳布（W-Ni ₂ P NS/CC）的掺钨磷化镍纳米片作为一种高效的双功能催化剂，通过简单的水热和磷化在 1 M KOH 中进行整体水分解。W-Ni ₂ P NS/CC 在 1 M KOH 中表现出优异的电化学性能，HER (η ₁₀  = 71 mV, η ₅₀  = 160 mV) 和 OER (η ₂₀  = 307 mV, η ₅₀ = 382 mV) 的过电位较低，以及卓越的长期稳定性。此外，W-Ni ₂P NS/CC 作为双功能催化剂在 1.55 V 的低电压下显示出显着的活性，达到 20 mA cm ^-2的电流密度。这项工作为整个水分解提供了一种可行的双功能催化剂。