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High performance stretchable Li-ion microbattery
Energy Storage Materials ( IF 18.9 ) Pub Date : 2020-08-07 , DOI: 10.1016/j.ensm.2020.07.005
Mohamed Nasreldin , Roger Delattre , Cyril Calmes , Marc Ramuz , Vinsensia Ade Sugiawati , Sébastien Maria , Jean-Louis de Bougrenet de la Tocnaye , Thierry Djenizian

The recent advances in wearable technologies had caused a surge in the demand for stretchable Li-ion microbatteries. Herein, a special design based on micropillar electrodes supported on metallic serpentines has been investigated to achieve the fabrication of a functionning device. Besides achieving high areal capacity values like 2.5 ​mA ​h ​cm−2 at C/10 (i.e. 0.07 ​mA ​cm−2), the micropillars make the system reversibly stretchable. Electrochemical tests revealed excellent performance when the stretchable micropower source was subjected to different mechanical strains. Indeed, 73% of the capacity is retained over 100 cycles under 30% strain and all fatigue tests showed that capacity retention remain higher than 70%.



中文翻译:

高性能可拉伸锂离子微型电池

可穿戴技术的最新进展引起了对可拉伸锂离子微型电池的需求激增。在此,已经研究了基于支撑在金属蛇纹石上的微柱电极的特殊设计,以实现功能装置的制造。除了在C / 10处达到2.5 mA h cm -2的高面容量值(0.07 mA cm -2)外,微柱还使系统可逆地拉伸。电化学测试显示,当可拉伸微动力源受到不同的机械应变时,其性能优异。实际上,在30%的应变下100个循环中,有73%的容量得以保留,所有疲劳测试均表明容量保持率仍高于70%。

更新日期:2020-08-26
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