Effect of Surface Properties of Carbon Nanotube Film on thePerformance of Lithium-air Batteries 


Vol. 57,  No. 2, pp. 113-124, Apr.  2020
10.12772/TSE.2020.57.113


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  Abstract

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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pISSN : 1225 - 1089
eISSN : 2288 - 6419

한국연구재단 우수등재학술지 유지 (2022년)