With the great support by the National Natural Science Foundation of China,the research team directed by Prof.Xia YongYao(夏永姚)and Prof.Wang YongGang(王永刚)at the Department of Chemistry,Institute of New Energy,iChEM (Collaborative Innovation Center of Chemistry for Energy Materials),Fudan University,recently designed a rechargeable battery that can be operated at the ultra-low temperature of-70 ℃,which was published in Joule (2018,2:902-913).