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High-Performance and Recyclable Al-Air Coin Cells Based on Eco-friendly Chitosan Hydrogel Membranes
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-05-18 00:00:00 , DOI: 10.1021/acsami.8b04974
Yisi Liu 1, 2 , Qian Sun 2 , Xiaofei Yang 2, 3 , Jianneng Liang 2 , Biqiong Wang 2 , Alicia Koo 2 , Ruying Li 2 , Jie Li 1 , Xueliang Sun 2
Affiliation  

Aluminum-air batteries are a promising power supply for electronics due to their low cost and high energy density. However, portable coin-type Al-air batteries operating under ambient air condition for small electronic appliances have rarely been reported. Herein, coin cell-type Al-air batteries using cost-effective and eco-friendly chitosan hydrogel membranes modified by SiO2, SnO2, and ZnO have been prepared and assembled. The Al-air coin cell employing chitosan hydrogel membrane containing 10 wt % SiO2 as a separator exhibits better discharge performance with a higher flat voltage plateau, longer discharge duration, and higher power density than the cells using a chitosan hydrogel membrane containing SnO2 or ZnO. Moreover, we also demonstrate that the presented Al-air coin cell can be recycled by a series of eco-friendly procedures using food-grade ingredients, resulting in recycled products that are environmentally safe and ready for reuse. The Al-air coin cell adopting a recycled cathode from a fully discharged Al-air coin cell using the above-mentioned procedure has shown comparable performance to cells assembled with a new cathode. With these merits of enhanced electrochemical performance and recyclability, this new Al-air coin cell with modified chitosan hydrogel membrane can find wide applications for powering portable and small-size electronics.

中文翻译:

基于环保的壳聚糖水凝胶膜的高性能可回收铝空气纽扣电池

铝空气电池由于其低成本和高能量密度而成为电子产品的有前途的电源。但是,很少有在小型电子设备的环境空气条件下运行的便携式硬币型铝制空气电池的报道。在此,已经制备并组装了使用经济有效且环保的壳聚糖水凝胶膜的纽扣电池型铝空气电池,该壳聚糖水凝胶膜经SiO 2,SnO 2和ZnO改性。与使用含SnO 2的壳聚糖水凝胶膜的电池相比,采用含10 wt%SiO 2的壳聚糖水凝胶膜作为隔膜的铝制纽扣电池具有更好的放电性能,具有更高的平坦电压平稳期,更长的放电持续时间和更高的功率密度。或ZnO。此外,我们还证明了所提出的Al-air纽扣电池可以使用食品级成分通过一系列环保程序进行回收,从而产生了对环境安全且可重复使用的回收产品。采用上述程序从完全放电的铝制硬币电池采用回收阴极的铝制硬币电池已经显示出与组装有新阴极的电池相当的性能。具有增强的电化学性能和可回收性的优点,这种新型的具有修饰的壳聚糖水凝胶膜的铝制纽扣电池可为便携式和小型电子设备提供广泛的应用。
更新日期:2018-05-18
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