Water splitting made cheap: A precious-metal/metal-oxides-free, efficient alkaline water-electrolysis full cell is constructed employing Co₃O₄ nitrogen-doped reduced graphene oxide (Co₃O₄/NrGO) composite sponge as the anode and nickel nitrogen-doped reduced graphene oxide (NiNG) as the cathode catalysts system. It exhibits a current density of 270 mA cm⁻² at 1.9 V.

中文翻译：

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非贵金属/金属氧化物和氮掺杂的还原石墨烯氧化物碱性水电解槽

廉价的水分解法：以Co ₃ O ₄氮掺杂的还原氧化石墨烯（Co ₃ O ₄ / NrGO）复合海绵为阳极，构造无贵金属/无金属氧化物的高效碱性水电解全电池。镍氮掺杂的还原氧化石墨烯（NiNG）作为阴极催化剂体系。它在1.9 V下的电流密度为270 mA cm ^-2。