Graphdiyne: a superior carbon additive to boost the activity of water oxidation catalysts†,Nanoscale Horizons

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Graphdiyne: a superior carbon additive to boost the activity of water oxidation catalysts†
Nanoscale Horizons ( IF 8.0 ) Pub Date : 2018-03-15 00:00:00 , DOI: 10.1039/c8nh00027a
Panyong Kuang _{1,

2,

3,

4} , Bicheng Zhu _{1,

2,

3,

4} , Yuliang Li _{4,

5,

6,

7,

8} , Huibiao Liu _{4,

5,

6,

7,

8} , Jiaguo Yu _{1,

2,

3,

4,

9} , Ke Fan _{1,

2,

3,

4}

Affiliation

A new carbon allotrope, graphdiyne (GDY), with a highly π-conjugated structure of sp- and sp²-hybridized carbon networks, has recently emerged and been used as a superior carbon additive to boost the activity of water oxidation catalysts. In this work, a hybrid GDY/NiFe-LDH electrocatalyst was prepared by a facile hydrothermal treatment, which shows an outstanding catalytic activity with a low overpotential of 260 mV at 10 mA cm⁻² catalytic current density and good durability towards oxygen evolution in 1.0 M KOH solution. Density functional theory (DFT) calculations prove that the sp- and sp²-hybridized GDY shows both superior electron capture and excellent electron transfer ability compared to that of the conventional sp²-hybridized carbon materials.

中文翻译：

Graphdiyne：一种优异的碳添加剂，可增强水氧化催化剂的活性†

最近出现了一种新的碳同素异形体，石墨烯（GDY），具有高度π-共轭结构的sp-和sp ^2-杂化碳网络，已被用作提高水氧化催化剂活性的优质碳添加剂。在这项工作中，通过简便的水热处理制备了混合的GDY / NiFe-LDH电催化剂，该催化剂表现出出色的催化活性，在10 mA cm ^-2的催化电流密度下具有260 mV的低过电势，并且在1.0的氧气释放下具有良好的耐久性M KOH溶液。密度泛函理论（DFT）计算证明，与常规sp ²相比，sp-和sp ²杂交的GDY既显示出优异的电子捕获性能，又显示出出色的电子传递能力-混合碳材料。

更新日期：2018-03-15

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