双功能
电催化剂
电解
制氢
电解水
材料科学
联氨(抗抑郁剂)
分解水
高压电解
氮化物
氢
化学
化学工程
纳米技术
电化学
电极
催化作用
光催化
物理化学
有机化学
色谱法
工程类
图层(电子)
电解质
作者
Xiaoli Wang,Huashuai Hu,Xinfeng Yan,Zhaorui Zhang,Minghui Yang
标识
DOI:10.1002/anie.202401364
摘要
The development of high‐purity and high‐energy‐density green hydrogen through water electrolysis holds immense promise, but issues such as electrocatalyst costs and power consumption have hampered its practical application. In this study, we present a promising solution to these challenges through the use of a high‐performance bifunctional electrocatalyst for energy‐efficient hydrogen production via coupled hydrazine degradation. The biphasic metal nitrides with highly lattice‐matched structures are deliberately constructed, forming an enhanced local electric field between the electron‐rich Ni3N and electron‐deficient Co3N. Additionally, Mn is introduced as an electric field engine to further activate electron redistribution. Our Mn@Ni3N‐Co3N/NF bifunctional electrocatalyst achieves industrial‐grade current densities of 500 mA cm‐2 at 0.49 V without degradation, saving at least 53.3% energy consumption compared to conventional alkaline water electrolysis. This work will stimulate the further development of metal nitride electrocatalysts and also provide new perspectives on low‐cost hydrogen production and environmental protection.
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