In-situ imaging the electrochemical reactions of Li-CO_(2) nanobatteries at high temperatures in an aberration corrected environmental transmission electron microscope
作者机构：Clean Nano Energy CenterState Key Laboratory of Metastable Materials Science and TechnologyYanshan UniversityQinhuangdao 066004China Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of EducationSchool of Materials Science and EngineeringXiangtan UniversityXiangtan 411105China Hebei Key Laboratory of Applied ChemistryCollege of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004China
出 版 物：《Nano Research》 (纳米研究（英文版）)
年 卷 期：2022年第15卷第1期
页 面：542-550页
核心收录：
基 金：supported by the the National Natural Science Foundation of China(Nos.52022088,51971245,51772262,21406191,U20A20336,and 21935009) Beijing Natural Science Foundation(No.2202046) Selective funding for provincial postdoctoral research projects(No.B2019003018) Fok Ying-Tong Education Foundation of China(No.171064) Natural Science Foundation of Hebei Province(Nos.B2020203037,and B2018203297) Hunan Innovation Team(No.2018RS3091)
主 题：in-situ environmental transmission electron microscopy high temperature Li-C0_(2)nanobatteries electrochemistry Li2CO3
摘 要：Rechargeable lithium-carbon dioxide(Li-CO_(2))batteries have attracted much attention due to their high theoretical energy densities and capture of C0_(2).However,the electrochemical reaction mechanisms of rechargeable Lo-CO_(2) batteries,particularly the decomposition mechanisms of the discharge product Li_(2)CO_(3) are still unclear,impeding their practical *** electrochemistry of Li_(2)CO_(3) is critical for improving the performance of Li-C0_(2) ***,in-situ environmental transmission electron microscopy(ETEM)technique was used to study electrochemistry of Li_(2)CO_(3) in Li-C0_(2) batteries during discharge and charge *** discharge,Li_(2)CO_(3) was nucleated and accumulated on the surface of the cathode media such as carbon nanotubes(CNTs)and Ag nanowires(Ag NWs),but it was hard to decompose during charging at room *** promote the decomposition of Li2C03,the charge reactions were conducted at high temperatures,during which Li_(2)CO_(3) was decomposed to lithium with release of *** functional theory(DFT)calculations revealed that the synergistic effect of temperature and biasing facilitates the decomposition of Li_(2)CO_(3).This study not only provides a fundamental understanding to the high temperature Li-C0_(2) nanobatteries,but also offers a valid technique,i.e.,discharging/charging at high temperatures,to improve the cyclability of Li-CO_(2) batteries for energy storage applications.
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