Developing renewable and clean energy systems for overall water electrolysis requires low-cost, highly efficient, and stable catalysts. With this motivation, nickel cobalt phosphorus (NiCoP) was electrodeposited onto nickel foam (NF) and then modified with graphitic carbon nitride (g-C₃N₄). The designed g-C₃N₄/NiCoP/NF electrode was used for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline water electrolysis. It exhibited a small overpotential of 80 mV@10 mA cm⁻² with a Tafel slope of 89 mV dec⁻¹ for the HER. It also exhibited an overpotential of 370 mV@10 mA cm⁻² with a Tafel slope of 64 mV dec⁻¹ for the OER. The g-C₃N₄/NiCoP catalyst exhibited satisfactory stability in an alkaline electrolyzer system, in which g-C₃N₄/NiCoP/NF was used as the anode and cathode. Meanwhile, the electrocatalyst requires only a cell voltage of 1.70 V to achieve 10 mA cm⁻² current density for overall water electrolysis.

中文翻译：

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用于碱性水电解的石墨氮化碳纳米片装饰双金属磷化物的高性能电催化剂

开发用于整体水电解的可再生和清洁能源系统需要低成本、高效且稳定的催化剂。出于这个动机，镍钴磷（NiCoP）被电沉积到泡沫镍（NF）上，然后用石墨碳氮化物（gC ₃ N ₄）进行改性。设计的gC ₃ N ₄ /NiCoP/NF电极用于碱性水电解中的析氢反应(HER)和析氧反应(OER)。对于 HER，它表现出 80 mV@10 mA cm ^-2的小过电势，塔菲尔斜率为 89 mV dec ^-1 。 OER还表现出 370 mV@10 mA cm ^-2的过电势，塔菲尔斜率为 64 mV dec ^-1 。 gC ₃ N _{4 /NiCoP催化剂在以gC 3} N ₄ /NiCoP/NF为阳极和阴极的碱性电解槽系统中表现出令人满意的稳定性。同时，电催化剂仅需要1.70 V的电池电压即可实现整体水电解的10 mA cm ^{-2电流密度。}