Wet-spun carbon nanotube fiber for flexible thermoelectric generators
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초록
내용
As the concept of practical and wearable thermoelectric (TE) generator begins to surface, requirements such as flexibility, being lightweight and mass producibility have become important. The thermoelectric generators based on fiber or yarn are of special interest because of their ability to easily integrate into clothing. Herein, we have demonstrated wet-spun CNT fibers with excellent TE performance. The TE performance of CNT fibers strongly depends on the dispersion of CNT powder in chlorosulfonic acid used as a dope solvent. The acid pre-treatment of CNT powder can control the CNT dispersion, thereby leading to an enhanced power factor of 1344 μW/mK2. The CNT fibers were then doped into p- and n-type fibers to produce flexible TE generator.