Weakly-solvating electrolytes enable ultralow-temperature (-80°C) and high-power CF_(x)/Li primary batteries
作者机构：MOE Key Laboratory for UV Light-Emitting Materials and TechnologyNortheast Normal UniversityChangchun 130024China Department of ChemistryNortheast Normal UniversityChangchun 130024China Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi ProvinceGannan Normal UniversityGan Zhou 341000China Qingdao University of Science and TechnologyQingdao 260061China
出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)
年 卷 期：2023年第66卷第7期
页 面：1982-1988页
核心收录：
学科分类：0808[工学-电气工程] 081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术]
基 金：financially supported from the Natural Science Foundation of Jilin Province(20220508141RC)
主 题：CF_(x)/Li primary batteries solvation engineering desolvation barrier ultra-low temperature
摘 要：Fluorinated carbons(CF_(x))/Li primary batteries with high theoretical energy density have been applied as indispensable energy storage devices with no need for rechargeability,yet plagued by poor rate capability and narrow temperature adaptability in actual ***,benefiting from precise solvation engineering for synergistic coordination of anions and low-affinity solvents,the optimized cyclic ether-based electrolyte is elaborated to significantly facilitate overall reaction dynamics closely correlated to lower desolvation *** a result,the excellent rate(15 C,650 mAh g^(-1))at room-temperature and ultra-lowtemperature performance dropping to-80°C(495 mAh g^(-1)at average output voltage of 2.11 V)is delivered by the end of 1.5 V cut-off voltage,far superior to other organic liquid ***,the CF_(x)/Li cell employing the high-loading electrode(18-22 mg cm^(-2))still yields 1,683 and 1,395 Wh kg^(-1)in the case of-40°C and-60°C,*** short,the novel design strategy for cyclic ethers as basic solvents is proposed to enable the CF_(x)/Li battery with superb subzero performances,which shows great potential in practical application for extreme environments.
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