Abstract
Al-air batteries are regarded as potential power source for flexible and wearable devices. However, the traditional cathodes of Al-air batteries are easy to be broken after continuous bending. This is why few Al-air batteries have been tested under the state of dynamic bending so far. Herein, carbon nanofibers incorporated with Mn3O4 catalyst have been prepared as bending-resistant cathodes through direct electrospinning. The cathode assembled in Al-air battery showed excellent electrochemical and mechanical stability. A high specific capacity of 1021 mAh/cm2 was achieved after bending 1000 times, which is 81.7% of that in platform state. This work will facilitate the progress of using Al-air battery in flexible electronics.
Highlights
Flexible and wearable electronic devices have enjoyed rapid development in recent years [1,2,3].The wearable devices may be placed on wrists as pulse sensors for health monitoring [4], or on legs as muscle sensors [5] for rehabilitation exercises
We propose an innovate bending-resistant cathode for Al-air battery prepared by Manganese materials are served as catalyst
The electrochemical this work, we propose an innovate bending-resistant cathode for Al-air battery prepared by performance of the Al-airManganese battery has been are studied the Instead static and bending states of direct electrospinning
Summary
Flexible and wearable electronic devices have enjoyed rapid development in recent years [1,2,3]. The wearable devices may be placed on wrists as pulse sensors for health monitoring [4], or on legs as muscle sensors [5] for rehabilitation exercises. The traditional preparation of cathodes requires physical deposition of all ingredients onto current collectors by drop-casting or spraying-coating [11,12,13]. This kind of cathodes are easy to damage during the process of repeated bending, which would make them impractical for flexible electronic devices
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