基于高离子导体界面层的高温固态锂氧气电池  

High temperature solid lithium oxygen battery based on high ion conductor interface layer

作　　者：叶义鹏 王胜 朱挺 于智乾 曹蕴清 宋虎成 徐骏[1] Ye Yipeng;Wang Sheng;Zhu Ting;Yu Zhiqian;Cao Yunqing;Song Hucheng;Xu Jun(National Laboratory of Solid State Microstructures,School of Electronic Science and Engineering,Nanjing University,Nanjing,210093,China)

机构地区：[1]固体微结构物理国家重点实验室,南京大学电子科学与工程学院,南京210093

出　　处：《南京大学学报（自然科学版）》2021年第6期1000-1005,共6页Journal of Nanjing University（Natural Science）

基　　金：国家自然科学基金(61921005,62004078);江苏省自然科学基金(SBK2019044203,BK20201073);江苏省博后基金(2020Z403)。

摘　　要：以金属锂作为负极的固态锂‐氧气电池由于超高的比能量和宽操作温度而成为当前国际研究的热点,但是金属锂的高反应活性使基于金属锂负极的固态锂金属电池难以在高温下稳定地工作.用高离子导体的三元碱金属锂盐作为金属锂(Li)负极与固态电解质(Li_(1.5)Al_(0.5)Ge_(1.5)P_(3)O_(12),LAGP)之间的人工界面层,改善Li/LAGP之间的界面接触,降低其界面阻抗,提高界面稳定性.基于此制备的固态锂‐氧气电池在150℃可以释放出1.58 m Ah·cm^(12)的容量,对应库伦效率接近100%,在定容0.1 m Ah·cm^(12)时,可稳定循环40周期.为高温电池的研究和开发提供了有效的途径.The solid-state lithium-oxygen batteries with lithium metal as the anode has become a hotspot in the current research due to its high specific capacity and wide operating temperature.However,the high reactivity of lithium metal makes it difficult for solid-state lithium metal batteries to work under high temperature.In this work,we use high ion conductivity inorganic molten salt as the artificial interface layer between lithium metal (Li) anode and solid electrolyte (Li_(1.5)Al_(0.5)Ge_(1.5)P_(3)O_(12),LAGP) to improve the interface contact,reduce the interface impedance,and improve the interface stability between Li and LAGP.Such solid-state lithium-oxygen batteries prepared a capacity of 1.58 m Ah·cm^(12)at 150℃,with~100%coulomb efficiency and a stable cycling performance over 40 cycles at current density of 0.1 m Ah·cm^(12).This work provides an effective way for the development of high temperature batteries.

关 键 词：锂-氧气电池 高温电池 固态电池 熔融盐电池 

分 类 号：TK02[动力工程及工程热物理]