탄소나노튜브 필름의 표면 특성이 리튬 에어 전지의 성능에 미치는 영향

초록

Lithium-air (Li-air) batteries, which use oxygen as an active material for the positive electrode, have many advantages such as low weight, low pollution, and low cost compared with commercial batteries. In this study, post-treatments, such as acid and heat treatment, were conducted on carbon nanotube (CNT) films, which were fabricated via the direct spinning method, to change the surface properties of the CNT films. The posttreated CNT films were used as positive electrodes for Li-air batteries to investigate the effect of post-treatment on the performance of Li-air batteries. The raw CNT film showed a high capacity of 7000 mAh/g after 18 cycles. The acid-treated and heat-treated CNT films exhibited improved cycling performance compared with the raw CNT film. It is known that the performance of the Li-air battery is affected by the morphology and functional group of the CNT film electrode.

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