Sulfur-doped CoP (S:CoP) nanoparticles are synthesized as a noble metal-free electrocatalyst via a novel and eco-friendly thiourea-phosphate-assisted solvothermal route. When used as a bifunctional electrocatalyst for the hydrogen and oxygen evolution reactions from water splitting in an alkaline solution, the electrode exhibits excellent activity and stability outperforming noble mental-based Pt/C, IrO₂, and reported non-noble metal-based electrocatalysts. Density functional theory calculations indicate that the excellent performance is attributable to the improved charge-transfer characteristics of the S:CoP nanoparticles owing to their modified electronic structure. It also increases the number of exposed active sites especially on the conductive substrates. A bifunctional S:CoP catalyst-based alkaline electrolyzer for overall water splitting exhibits a stable current density of 100 mA/cm² at an overvoltage of 0.55 V during a long-term operation; this performance is superior to that obtained from all-noble metal electrolyzer with a Pt/C cathode and an IrO₂ anode.

硫掺杂的CoP（S：CoP）纳米颗粒通过新颖且环保的硫脲-磷酸盐-辅助溶剂热途径合成为无贵金属的电催化剂。当用作双功能电催化剂用于碱性溶液中水分解产生的氢气和氧气放出反应时，该电极表现出优异的活性和稳定性，优于贵族基于精神的Pt / C，IrO ₂，并报道了非贵金属基电催化剂。密度泛函理论计算表明，优异的性能归因于S：CoP纳米粒子由于其改性的电子结构而改善的电荷转移特性。这也增加了暴露的活性部位的数量，尤其是在导电基材上。用于整体水分解的双功能S：CoP催化剂基碱性电解槽在长期运行期间在0.55 V的过电压下显示100 mA / cm ²的稳定电流密度。该性能优于从具有Pt / C阴极和IrO ₂阳极的全贵金属电解槽获得的性能。