Efficient oxygen evolution electrocatalyzed by a Cu nanoparticle-embedded N-doped carbon nanowire array†,Inorganic Chemistry Frontiers

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Efficient oxygen evolution electrocatalyzed by a Cu nanoparticle-embedded N-doped carbon nanowire array†
Inorganic Chemistry Frontiers ( IF 6.1 ) Pub Date : 2018-03-20 00:00:00 , DOI: 10.1039/c8qi00119g
Xiaojuan Zhu _{1,

2,

3,

4,

5} , Xifeng Shi _{6,

7,

8,

9,

10} , Abdullah M. Asiri _{11,

12,

13,

14,

15} , Yonglan Luo _{1,

2,

3,

4,

5} , Xuping Sun _{1,

2,

3,

4,

5}

Affiliation

Development of efficient and durable catalysts based on earth-abundant elements for oxygen evolution reactions (OER) is important for renewable energy storage and conversion technologies. Herein, we report the development of a Cu nanoparticle-embedded N-doped carbon nanowire array on copper foam (Cu–N–C NA/CF) via carbonization of a Cu(TCNQ) (TCNQ = 7,7,8,8-tetracyanoquinodimethane) nanoarray. As a 3D OER electrode, this Cu–N–C NA/CF shows high catalytic activity, needing an overpotential of 314 mV to drive a geometrical current density of 20 mA cm⁻² in 1.0 M KOH. It also shows strong long-term electrochemical durability. This suggested that CuO nanoparticles as active species were in situ electrochemically converted from Cu nanoparticles and stably dispersed in the carbon matrix during electrocatalysis.

中文翻译：

嵌入Cu纳米粒子的N掺杂碳纳米线阵列电催化的高效放氧†

基于可再生氧的储存和转化技术，开发基于地球丰富元素的高效耐用的催化剂以进行氧气释放反应（OER）至关重要。在这里，我们报告通过碳化铜（TCNQ）（TCNQ = 7,7,8,8-四氰基喹二甲烷）纳米阵列。作为3D OER电极，这种Cu–NC–NA / CF具有高催化活性，需要过电位314 mV才能在1.0 M KOH中驱动20 mA cm ^-2的几何电流密度。它还显示出强大的长期电化学耐久性。这表明CuO纳米颗粒作为活性物质是原位的 由Cu纳米颗粒电化学转化并在电催化过程中稳定地分散在碳基质中。

更新日期：2018-03-20

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