Metallic nickel nitride nanosheets realizing enhanced electrochemical water oxidation

Journal of the American Chemical Society
Kun XuYi Xie

Abstract

Exploring efficient and inexpensive oxygen evolution reaction (OER) electrocatalysts is of great importance for various electrochemical energy storage and conversion technologies. Ni-based electrocatalysts have been actively pursued because of their promising activity and earth abundance. However, the OER efficiency for most of the developed Ni-based electrocatalysts has been intrinsically limited due to their low electrical conductivity and poor active site exposure yield. Herein, we report metallic Ni3N nanosheets as an efficient OER electrocatalyst for the first time. The first-principles calculations and electrical transport property measurements unravel that the Ni3N is intrinsically metallic, and the carrier concentration can be remarkably improved with dimensional confinement. The EXAFS spectra provide solid evidence that the Ni3N nanosheets have disordered structure resultant of dimensional reduction, which then could provide more active sites for OER. Benefiting from enhanced electrical conductivity with metallic behavior and atomically disordered structure, the Ni3N nanosheets realize intrinsically improved OER activity compared with bulk Ni3N and NiO nanosheets. Our finding suggests that metallic nitride nanosheets c...Continue Reading

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Citations

Oct 27, 2015·Journal of the American Chemical Society·Jun LiGengfeng Zheng
Sep 10, 2015·Journal of the American Chemical Society·Liang-Liang FengXiaoxin Zou
Jul 13, 2016·ACS Applied Materials & Interfaces·Zhaoyang WangLiqiang Mai
Oct 25, 2016·Journal of the American Chemical Society·Jie YinShouheng Sun
Nov 1, 2016·Journal of the American Chemical Society·Gong ZhangJinghong Li
Dec 17, 2016·The Journal of Physical Chemistry Letters·Anirban Dutta, Narayan Pradhan
Mar 18, 2017·Chemical Reviews·Chaoliang TanHua Zhang
Apr 14, 2017·ACS Applied Materials & Interfaces·Gong ZhangJinghong Li
Apr 4, 2017·Chemistry : a European Journal·Ruixiang GeXuping Sun
Jan 14, 2017·Chemical Society Reviews·Nian-Tzu SuenHao Ming Chen
Dec 13, 2016·Advanced Materials·Bing LiYoung Hee Lee
Jul 1, 2017·Chemical Communications : Chem Comm·Simin ZhangXun Wang

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