Kuang Panyong, Zhu Bicheng, Li Yuliang, Liu Huibiao, Yu Jiaguo, Fan Ke
State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China.
Nanoscale Horiz. 2018 May 1;3(3):317-326. doi: 10.1039/c8nh00027a. Epub 2018 Mar 22.
A new carbon allotrope, graphdiyne (GDY), with a highly π-conjugated structure of sp- and sp-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 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 sp-hybridized GDY shows both superior electron capture and excellent electron transfer ability compared to that of the conventional sp-hybridized carbon materials.
一种新型碳同素异形体——石墨炔（GDY），具有由sp和sp杂化碳网络构成的高度π共轭结构，最近已出现并被用作一种优异的碳添加剂以提高水氧化催化剂的活性。在这项工作中，通过简便的水热法制备了一种GDY/NiFe-LDH复合电催化剂，该催化剂在10 mA cm的催化电流密度下具有260 mV的低过电位，表现出出色的催化活性，并且在1.0 M KOH溶液中对析氧反应具有良好的耐久性。密度泛函理论（DFT）计算证明，与传统的sp杂化碳材料相比，sp和sp杂化的GDY具有优异的电子捕获能力和出色的电子转移能力。
