Department of Mechanical and Industrial Engineering, University of Illinois at Chicago, Chicago, IL, 60607, USA.
Materials Science Division, Argonne National Laboratory, Lemont, IL, 60439, USA.
Small. 2021 Oct;17(42):e2102072. doi: 10.1002/smll.202102072. Epub 2021 Sep 16.
Lithium-oxygen (Li-O ) batteries possess the highest theoretical energy density (3500 Wh kg ), which makes them attractive candidates for modern electronics and transportation applications. In this work, an inexpensive, flexible, and wearable Li-O battery based on the bifunctional redox mediator of InBr , MoS cathode catalyst, and Fomblin-based oxygen permeable membrane that enable long-cycle-life operation of the battery in pure oxygen, dry air, and ambient air is designed, fabricated, and tested. The battery operates in ambient air with an open system air-breathing architecture and exhibits excellent cycling up to 240 at the high current density of 1 A g with a relative humidity of 75%. The electrochemical performance of the battery including deep-discharge capacity, and rate capability remains almost identical after 1000 cycle in a bending fatigue test. This finding opens a new direction for utilizing high performance Li-O batteries for applications in the field of flexible and wearable electronics.
锂-氧（Li-O ）电池具有最高的理论能量密度（3500 Wh kg），这使得它们成为现代电子和运输应用的有吸引力的候选者。在这项工作中，设计、制造和测试了一种基于 InBr 的双功能氧化还原介体、MoS 阴极催化剂和基于 Fomblin 的氧气渗透膜的廉价、灵活和可穿戴 Li-O 电池，使电池能够在纯氧、干燥空气和环境空气中进行长循环寿命操作。该电池在具有开放式系统空气呼吸结构的环境空气中运行，在相对湿度为 75%时以 1 A g 的高电流密度展示了出色的循环性能，高达 240 次。在弯曲疲劳测试中，电池的电化学性能包括深放电容量和倍率性能在 1000 次循环后几乎保持不变。这一发现为利用高性能 Li-O 电池在灵活和可穿戴电子领域的应用开辟了新的方向。
