The development of superior electrocatalysts is an essential step in the advancement of hydrogen energy generation by the electrocatalytic water splitting and the properties being required are bifunctionality, low overpotential, elemental abundance of electrode materials, stability, and low cost. In this work, a hybrid nanoarchitecture of CoP₂–Pt–FTO is demonstrated for the bifunctional operations in the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) of overall water splitting in a single alkaline solution. The bifunctional hybrid nanoarchitecture comes in a simple configuration, incorporating the CoP₂ nanoparticles of highly efficient OER component on a thin Pt layer of excellent HER element. The hybrid electrode demonstrates the low overpotentials of 265 and 19.4 mV at a current density of 10 mA/cm² for the OER and HER, respectively, in a single alkaline solution of 1.0 M KOH. A low cell voltage of 1.52 V is demonstrated with an excellent stability at 10 mA/cm² for the bifunctional operation of the hybrid electrode. In the hybrid nanoarchitecture, the Pt atoms can play a role of high electrochemical active sites for the Pt−H_ads formation, thus improving the HER. At the same time, the thin Pt layer can also provide a good conducting template for the fabrication of CoP₂ nanoparticles by the electrochemical deposition. The positively charged Co⁺ atoms can actively absorb the hydroxyl receptors (OH⁻), thus improving OER. Simultaneously, the negatively charged P⁻ atoms can promote the adsorption of H⁺ protons, thus contributing to the HER. Various hybrid electrode catalysts are successfully fabricated by the control of deposition temperature of CoP₂ and thickness of Pt layer, that is, CoPx/Pty, where x is deposition temperature and y Pt thickness and demonstrate the excellent simultaneous operations of OER and HER in a single alkaline solution.

优异的电催化剂的开发是通过电催化水分解提高氢能产生的必不可少的步骤，并且所需的性质是双功能性，低过电势，电极材料的元素丰度，稳定性和低成本。在这项工作中，CoP ₂ –Pt–FTO的混合纳米体系结构被证明可用于在单一碱性溶液中将水分解的氧气释放反应（OER）和氢气释放反应（HER）中的双功能操作。双功能混合纳米架构采用简单的配置，并整合了CoP ₂优异的HER元素的薄Pt层上具有高效OER组分的纳米颗粒。在1.0 M KOH的单一碱性溶液中，对于OER和HER，在10 mA / cm ²的电流密度下，混合电极分别具有265和19.4 mV的低电势。对于混合电极的双功能操作，显示了1.52 V的低电池电压，在10 mA / cm ^2下具有出色的稳定性。在杂化纳米结构中，Pt原子可以在Pt-H _ads形成过程中发挥高电化学活性位的作用，从而改善HER。同时，薄的Pt层还可以为制造CoP ₂提供良好的导电模板纳米颗粒通过电化学沉积。带正电的钴⁺原子可以积极吸收羟基受体（OH ^- ），从而提高了OER。同时，带负电荷的P ^-原子可以促进H的吸附⁺质子，从而促进了HER。通过控制CoP ₂的沉积温度和Pt层的厚度，即CoP x / Pt y，成功地制造了各种混合电极催化剂，其中x是沉积温度和y Pt的厚度，证明了OER和HER的出色同时运行在单一碱性溶液中。