原位表征技术在锂氧气电池中的研究进展  

Advancements in in situ characterization techniques for lithium-oxygen batteries

作　　者：张晓平 容远嘉 王潜雁 高梦林 廖亚玲 吴民生 庄鑫鑫 黄中昱 万美君 陈维荣[1] ZHANG Xiaoping;RONG Yuanjia;WANG Qianyan;GAO Menglin;LIAO Yaling;WU Minsheng;ZHUANG Xinxin;HUANG Zhongyu;WAN Meijun;CHEN Weirong(Southwest Jiaotong University,Chengdu 611756,Sichuan,China)

机构地区：[1]西南交通大学,四川成都611756

出　　处：《储能科学与技术》2024年第4期1225-1238,共14页Energy Storage Science and Technology

基　　金：国家自然科学基金青年基金(22109131);中国科协青年人才托举工程(2022QNRC001);四川省博士后创新人才支持项目;西南交通大学新型交叉学科培育项目(2682022KJ028)。

摘　　要：锂氧气电池以其极高的能量密度受到了科研工作者们的广泛关注。然而,锂氧气电池存在金属锂负极稳定性差、充电过电位高等关键难题,使得电池循环寿命短、能量利用效率低,距离大规模应用还有很长一段距离。为了推动锂氧气电池的发展,越来越多的先进原位表征手段用于研究锂氧气电池的机理和优化电池结构。先进的原位表征技术不仅可以用于获取电池的静态信息,同时能准确获取电池在循环过程中的动态电化学行为以及结构演变过程,对于推动锂氧气电池的发展有着重要意义。本文综述了近年来应用于锂氧气电池原位表征手段的相关研究进展,包括原位显微表征技术、原位X射线表征技术、原位质谱表征技术等。通过具体的研究案例,分析了各种原位表征技术的功能,总结了其在锂氧气电池领域里的具体应用场景,揭示了锂氧气电池更深层次的反应机理,并探讨和展望了未来锂氧气电池研究中需要的先进原位表征技术。The remarkable energy density of lithium-oxygen batteries has gained considerable attention among researchers.Nevertheless,the insufficient stability of the lithium metal anode and the high charging overpotential pose substantial obstacles to the advancement of lithium-oxygen batteries,negatively impacting cycling performance and round-trip efficiency.With the evolving techniques,an expanding array of advanced in situ characterization methods is employed for mechanism research and battery structure optimization in lithium-oxygen batteries.In situ characterization techniques offer static insights into various components of lithium-oxygen batteries while enabling precise monitoring of the dynamic electrochemical behavior and structural evolution of the battery throughout the cycling process with remarkable accuracy.Thus,in situ characterization techniques play a pivotal role in driving the progress of lithium-oxygen batteries.The study comprehensively reviews recent advancements in in situ characterization techniques for lithium-oxygen batteries,encompassing in situ microscopic,in situ X-ray,and in situ mass spectrometry characterizations.Through the analysis of specific cases,we elucidate the functionalities of various in situ characterization techniques,outline their specific applications in lithium-oxygen batteries,and unveils the deeper reaction mechanisms of lithium-oxygen batteries.Furthermore,we explore and anticipate advanced in situ characterization techniques for future research on lithium-oxygen batteries.

关 键 词：锂氧气电池 原位表征 反应机理 

分 类 号：TQ028.8[化学工程]