阳极
电解质
易燃液体
材料科学
阴极
锂(药物)
多硫化物
化学工程
硫化物
储能
电化学
无机化学
电极
化学
有机化学
物理
工程类
内分泌学
物理化学
功率(物理)
冶金
医学
量子力学
作者
Yuzhao Liu,Xiangyu Meng,Zhiyu Wang,Jieshan Qiu
标识
DOI:10.1038/s41467-022-32031-7
摘要
Anode-free lithium batteries without lithium metal excess are a practical option to maximize the energy content beyond the conventional design of Li-ion and Li metal batteries. However, their performance and reliability are still limited by using low-capacity oxygen-releasing intercalation cathodes and flammable liquid electrolytes. Herein, we propose quasi-solid-state anode-free batteries containing lithium sulfide-based cathodes and non-flammable polymeric gel electrolytes. Such batteries exhibit an energy density of 1323 Wh L-1 at the pouch cell level. Moreover, the lithium sulfide-based anode-free cell chemistry endows intrinsic safety thanks to a lack of uncontrolled exothermic reactions of reactive oxygen and excess Li inventory. Furthermore, the non-flammable gel electrolyte, developed from MXene-doped fluorinated polymer, inhibits polysulfide shuttling, hinders Li dendrite formation and further secures cell safety. Finally, we demonstrate the improved cell safety against mechanical, electrical and thermal abuses.
科研通智能强力驱动
Strongly Powered by AbleSci AI