The removal of inevitable NOx species in catalysts and the selection of appropriate membrane for measuring electrocatalytic ammonia synthesis accurately

作     者：Huimin Liu Yidan Zhang Jingshan Luo Huimin Liu;Yidan Zhang;Jingshan Luo

作者机构：Institute of Photoelectronic Thin Film Devices and TechnologyKey Laboratory of Photoelectronic Thin Film Devices and Technology of TianjinMinistry of Education Engineering Research Center of Thin Film Photoelectronic TechnologyRenewable Energy Conversion and Storage CenterNankai UniversityTianjin 300350China 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2020年第29卷第10期

页      面：51-58页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the funding support from the National Thousand Talent Program for Young Professionals and the startup funding from Nankai University The Overseas Expertise Introduction Project for Discipline Innovation of Higher Education of China(Grant no.B16027)is also acknowledged 

主　　题：Electrocatalysis Nitrogen reduction reaction Nafion membrane Nitrate impurity Pre-reduction 

摘      要：Ammonia synthesis by electrocatalytic nitrogen reduction reaction(NRR)is considered as a promising alternative to the Haber−Bosch ***,due to the extremely low ammonia yield and easily accessible extraneous contamination in the laboratory,NRR study always suffers from fluctuation and *** and eliminating all kinds of possible extraneous contamination is crucial to evaluate the performance of electrocatalytic ammonia synthesis *** this work,we systematically explored two factors that affect NRR results but are easy to be ignored:the selection of membrane for NRR and the unconscious N-source in NRR *** series of experiments,we proposed a low-cost and almost pollution-free Celgard 3501 membrane as the separator for NRR to avoid the adsorption and release of ammonia by the *** addition,we proposed a pre-reduction strategy to remove residual or adsorbed NOx contaminants in *** two solutions will help the community to evaluate the NRR activity more accurately.