A sustainable approach utilizing a low-temperature molten salt strategy is employed in this study to fabricate homogeneous and dense NiFe nitrate hydroxide needle-like arrays on a NiFe foam substrate. The electrode also achieves an ultra-low voltage of 1.77 V at 100 mA cm⁻² and maintains stability for more than 120 h at a current density of 100 mA cm⁻², showing excellent overall water splitting (OWS) performance and stability. Notably, the molten salt strategy enables the synthesis of electrodes at a reaction temperature as low as 125 °C. Additionally, the molten salt precursor is repeatable and renewable, thus preventing waste and presenting vast potential for application.

中文翻译：

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用于水电解的硝酸镍-铁氢氧化物针状阵列的可重复和可再生合成


本研究采用一种利用低温熔盐策略的可持续方法，在 NiFe 泡沫基材上制造均匀且致密的硝酸盐氢氧化物针状阵列。该电极还在 100 mA-2 时实现了 1.77 V 的超低电压，并在 100 mA ^cm-2 的电流密度下保持稳定性超过 120 小时，表现出优异的整体分解水 （OWS） 性能和稳定性。值得注意的是，熔盐策略能够在低至 125 °C 的反应温度下合成电极。 此外，熔盐前驱体是可重复和可再生的，因此可以防止浪费并具有巨大的应用潜力。