Liang Shuqin, Jing Meizan, Pervaiz Erum, Guo Haichuan, Thomas Tiju, Song Weiyu, Xu Jian, Saad Ali, Wang Jiacheng, Shen Hangjia, Liu Jian, Yang Minghui
State Key Laboratory of Heavy Oil Processing and Beijing Key Laboratory of Oil & Gas Pollution Control, China University of Petroleum, Beijing 102249, China.
Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201, China.
ACS Appl Mater Interfaces. 2020 Sep 16;12(37):41464-41470. doi: 10.1021/acsami.0c11324. Epub 2020 Aug 31.
Advance applications like water splitting system and rechargeable metal-air battery are highly dependent on efficient electrocatalyst for the oxygen evolution reaction (OER). Heterostructured materials, with a high active surface area and electron effect, accomplish enhanced catalytic performance. Here, a nitride-sulfide composite (FeNiN-NiS) has been prepared by a simple hydrothermal process coupled with nitridation. The prepared composite electrocatalyst FeNiN-NiS possesses lower electron densities compared to those of FeNiN and NiS, lessening the activation energy () toward the OER. Consequently, the prepared FeNiN-NiS exhibits excellent OER performance with a low overpotential (230 mV) and a small Tafel slope (38 mV dec). Highly stable FeNiN-NiS composite delivers lower charging voltage and extended lifetime in rechargeable Zn-air battery, compared with IrO.
诸如水分解系统和可充电金属空气电池等先进应用高度依赖于用于析氧反应（OER）的高效电催化剂。具有高活性表面积和电子效应的异质结构材料实现了增强的催化性能。在此，通过简单的水热法结合氮化制备了一种氮化物-硫化物复合材料（FeNiN-NiS）。所制备的复合电催化剂FeNiN-NiS与FeNiN和NiS相比具有更低的电子密度，降低了析氧反应的活化能（）。因此，所制备的FeNiN-NiS表现出优异的析氧反应性能，具有低过电位（230 mV）和小塔菲尔斜率（38 mV dec）。与IrO相比，高度稳定的FeNiN-NiS复合材料在可充电锌空气电池中提供更低的充电电压和更长的寿命。
