Room-temperature reduction of NO2 in a Li-NO2 battery: a proof of concept  

室温还原二氧化氮新策略:Li-NO2电池（英文）

作　　者：Jiachen Liang Chen Zhang Donghai Liu Tianhao Wu Ying Tao Guo-Wei Ling Hai-Jun Yu Jun Lu Quan-Hong Yang 梁家琛;张辰;刘东海;吴天昊;陶莹;凌国维;尉海军;陆俊;杨全红

机构地区：[1]Nanoyang Group,State Key Laboratory of Chemical Engineering,School of Chemical Engineering and Technology,Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin University,Tianjin 300350,China [2]School of Marine Science and Technology,Tianjin University,Tianjin 300350,China [3]College of Materials Science and Engineering,Key Laboratory of Advanced Functional Materials,Ministry of Education,Beijing University of Technology,Beijing 100124,China [4]Chemical Sciences and Engineering Division,Argonne National Laboratory,Argonne,IL 60439,USA [5]Joint School of National University of Singapore and Tianjin University,International Campus of Tianjin University,Fuzhou 350207,China

出　　处：《Science Bulletin》2020年第1期55-61,M0004,共8页科学通报（英文版）

基　　金：financial support from the National Science Fund for Distinguished Young Scholars, China (51525204);the National Natural Science Foundation of China (51602220 and U1710109)

摘　　要：Although considerable effort has been devoted to purifying nitrogen oxides(NOx),it is still challenging to effectively reduce NOxat room temperature and ambient pressure without catalysts.In this study,as a proof-of-concept,we have for the first time demonstrated the room-temperature reduction of nitrogen dioxide(NO2)using a rechargeable lithium-nitrogen dioxide(Li-NO2)battery.The battery shows a capacity of 884 m Ah g-1 at 50 m A g-1(an actual energy density of 666 Wh kg-1)and a promising electrochemical Faraday efficiency(FE)of 67%.The unique properties of Li-NO2 rechargeable batteries not only provide a way to reduce and recycle NO2 but also highlight the potential of oxidative air pollutants as energy sources for next-generation electrochemical energy storage(EES)systems.氮氧化物(NOx)的排放给生态环境和人类社会带来了严重危害.传统净化措施成本高,同时难以实现污染物的循环利用,如何实现经济高效的NOx处理已经成为极具挑战的课题.本研究成功构建了一种新型锂-二氧化氮(Li-NO2)电池,阐明了其充放电机制,实现了NO2在室温下的高效还原.该体系在50 mA g–1的电流密度下实际能量密度高达666 Wh kg–1,NO2还原的法拉第电化学效率达到67%,能够在实现NO2还原的同时高效输出电能.这种新型Li-NO2电池的构建不仅为NO2的治理和再利用提供了新的研究思路,同时为其他污染物气体的高效利用提出了普适性策略.

关 键 词：Li-NO2 battery Nitrogen dioxide Energy-storage devices Air pollutants CARBON 

分 类 号：TM911.41[电气工程—电力电子与电力传动] X51[环境科学与工程—环境工程]