Directly-prelithiated carbon nanotube film for high-performance flexible lithium-ion battery electrodes
Directly-prelithiated carbon nanotube film for high-performance flexible lithium-ion battery electrodes
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DOI：
10.1007/s12221-017-7715-5
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发表时间：
2017-12
影响因子：
2.5
通讯作者：
Sehyun Lee;Hyeonjun Song;J. Hwang;Youngjin Jeong
中科院分区：
文献类型：
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作者：
Sehyun Lee;Hyeonjun Song;J. Hwang;Youngjin Jeong
Carbon nanotube (CNT) films are very flexible and serve as active materials for lithium-ion batteries (LIBs). Hence, they have high potential as flexible free-standing electrodes for wearable batteries. However, nanocarbon materials such as CNTs and graphene are of limited use as electrodes because they have a large initial irreversible capacity due to the formation of a solid electrolyte interphase (SEI). Herein, we prelithiated the CNT films to make them available as electrodes for flexible batteries by reducing their irreversible capacity. The SEI is pre-formed through a direct prelithiation (DP) method that brings lithium metal into direct contact with CNT films in an electrolyte. As a result, the capacity of directly-prelithiated CNT film electrodes continues to increase to 1520 mAh/g until 350th cycle of charge/discharge and their initial irreversible capacity vanishes. The changes in the electrochemical properties of CNT film electrodes by DP treatment and their flexibility are investigated.
