Synthesis of silk-like FeS_2/NiS_2 hybrid nanocrystals with improved reversible oxygen catalytic performance in a Zn-air battery

作     者：Jing Jin Jie Yin Hanwen Liu Pinxian Xi 靳晶;殷杰;刘瀚文;席聘贤

作者机构：State Key Laboratory of Applied Organic ChemistryKey Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu ProvinceCollege of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou 730000GansuChina 

基　　金：supported by the National Basic Research Program of China(21571089,21503102,51571125) the Fundamental Research Funds for the Central Universities(lzujbky-2016-k02,lzujbky-2018-k08,lzujbky-2017-it42) 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2019年第40卷第1期

页      码：43-51页

摘      要：The development of highly active and stable reversible oxygen electrocatalysts is crucial for improving the efficiency of metal‐air battery ***,an efficient liquid exfoliation strategy was designed for producing silk‐like FeS2/NiS2 hybrid nanocrystals with enhanced reversible oxygen catalytic performance that displayed excellent properties for Zn‐air *** of the unique silk‐like morphology and interface nanocrystal structure,they can catalyze the oxygen evolution reaction(OER)efficiently with a low overpotential of 233 mV at j=10 mA cm?*** is an improvement from the recently reported catalysts in 1.0 M ***,the oxygen reduction reaction(ORR)activity of the silk‐like FeS2/NiS2 hybrid nanocrystals showed an onset potential of 911 mV and a half‐wave potential of 640 *** addition,the reversible oxygen electrode activity of the silk‐like FeS2/NiS2 hybrid nanocrystals was calculated to be 0.823 V,based on the potential of the OER and ***,the homemade rechargeable Zn‐air batteries using FeS2/NiS2 hybrid nanocrystals as the air‐cathode displayed a high open‐circuit voltage of 1.25 V for more than 17 h and an excellent rechargeable performance for 25 *** solid Zn‐air batteries exhibited an excellent rechargeable performance for 15 *** study provided a new method for designing interface nanocrystals with a unique morphology for efficient multifunctional electrocatalysts in electrochemical reactions and renewable energy devices.

主 题 词：Silk‐like FeS2/NiS2 Interface nanocrystal Reversible oxygen electrocatalyst Zn‐air battery 

学科分类：0808[工学-自动化类] 081705[081705] 08[工学] 0817[工学-轻工类] 

核心收录：

D　O　I：10.1016/S1872‐2067(18)63175‐4

馆 藏 号：203386107...