The coordination driven self-assembled materials are in high demand of advanced energy chemistry, which remain largely unexplored. Here an ultra-simple and environmental friendly strategy for fabricating metal-organic gels (MOGs) in terms of electrochemical overall water splitting was reported. Through electrochemical testing, the Ni_0.6Fe_0.4-MOG achieves the lowest oxygen evolution reaction (OER) overpotential of 285 mV (j₁₀), 347 mV (j₁₀₀), 445 mV (j₅₀₀) (GC electrode) and 173 mV (j₁₀, NF electrode) in 1 M KOH, an ultra-low Tafel slope of 33 mV dec⁻¹ and long-term stability, outperforming most of the reported polymer catalysts. On account of the moderate hydrogen evolution reaction (HER) performance (159 mV (j₁₀)), thereby can drive the two-electrode electrolyzer at a relatively low cell voltage of 1.61 V (1.48 V when using Pt/C as cathode) and no significant attenuation after 20 h. Our work has demonstrated that the MOGs could break the shackles of current polymer catalysts for electrocatalysis.

配位驱动的自组装材料对先进的能源化学有很高的需求，这在很大程度上仍未得到探索。本文报道了一种在电化学整体水分解方面制造金属有机凝胶 (MOG) 的超简单且环境友好的策略。通过电化学测试，Ni _0.6 Fe _0.4 -MOG 实现了最低的析氧反应 (OER) 过电位，分别为 285 mV ( j ₁₀ )、347 mV ( j ₁₀₀ )、445 mV ( j ₅₀₀ ) (GC 电极) 和 173 mV ( j ₁₀，NF 电极）在 1 M KOH 中，33 mV dec ^-1的超低 Tafel 斜率和长期稳定性，优于大多数报道的聚合物催化剂。由于适度的析氢反应 (HER) 性能 (1​​59 mV ( j ₁₀ ))，因此可以在 1.61 V（使用 Pt/C 作为阴极时为 1.48 V）的相对较低的电池电压下驱动双电极电解槽，并且20 小时后无明显衰减。我们的工作表明，MOGs 可以打破当前用于电催化的聚合物催化剂的束缚。