Interface engineering of the Ni(OH)2–Ni3N nanoarray heterostructure for the alkaline hydrogen evolution reaction†,Journal of Materials Chemistry A

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Interface engineering of the Ni(OH)2–Ni3N nanoarray heterostructure for the alkaline hydrogen evolution reaction†
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2017-12-14 00:00:00 , DOI: 10.1039/c7ta08907d
Min Gao _{1,

2,

3,

4,

5} , Lanlan Chen _{1,

2,

3,

4,

5} , Zhenhua Zhang _{1,

2,

3,

4,

5} , Xuping Sun _{5,

6,

7,

8} , Shusheng Zhang _{1,

2,

3,

4,

5}

Affiliation

It is highly attractive but challenging to design and develop noble-metal-free catalysts with outstanding electrocatalytic activity for the hydrogen evolution reaction (HER) in alkaline media. In this work, we demonstrate the development of Ni(OH)₂–Ni₃N nanoarrays on Ti mesh (Ni(OH)₂–Ni₃N/TM) as a three-dimensional (3D) HER catalyst in alkaline solutions. Due to the heterostructure from interface engineering, Ni(OH)₂–Ni₃N/TM shows excellent alkaline HER activity only requiring an overpotential of 72 mV to deliver the current density of 20 mA cm⁻² in 1.0 M KOH. Such an electrocatalyst also exhibits long-term electrochemical durability maintaining its activity for at least 25 h.

中文翻译：

Ni（OH）₂ -Ni ₃ N纳米阵列异质结构的界面工程，用于碱性氢释放反应†

设计和开发对碱性介质中的析氢反应（HER）具有出色的电催化活性的无贵金属催化剂具有很高的吸引力，但具有挑战性。在这项工作中，我们演示了在Ti网格（Ni（OH）₂ -Ni ₃ N / TM）上作为三维（3D）HER催化剂在碱性溶液中的Ni（OH）₂ -Ni ₃ N纳米阵列的开发。由于界面工程的异质结构，Ni（OH）₂ -Ni ₃ N / TM显示出出色的碱性HER活性，仅需72 mV的超电势即可提供20 mA cm ^-2的电流密度在1.0 M KOH中这种电催化剂还表现出长期的电化学耐久性，将其活性维持至少25小时。

更新日期：2017-12-14

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