Kim, Jeong-Gil Lee, Dong-Myung Jung, Jae Young Kim, Min Ji Khil, Myung-Seob Jeong, Hyeon Su Kim, Nam Dong 2024-01-19T15:30:46Z 2024-01-19T15:30:46Z 2021-09-02 2021-02 2574-0962 https://pubs.kist.re.kr/handle/201004/117386 CNT fibers (CNTFs) are excellent platforms for fiber-shaped supercapacitors, offering both high electric conductivity and mechanical resilience. Here, we propose a polyaniline (PANI)/CNTF composite structure that utilizes a state-of-the-art liquidcrystal (LC)-spun CNTF as the ultimate conductive and flexible electrode. CNTFs assume a highly dense LC phase with a high electrical conductivity of 14 kS cm(-1), which is similar to that of its metal counterpart and suitable as a good current collector. Pseudocapacitive PANI can be homogeneously polymerized directly onto the smooth surface of the CNTFs by using the sonochemical polymerization method. The optimized synthetic process produces PANI in a favorable chemical state with good contact properties at the CNTF interface, exhibiting a high capacitance (738 F g(-1) at 1 A g(-1)) even at an extremely fast charge/discharge rate (604 F g(-1) at 100 A g(-1)). Moreover, the superior mechanical resilience of the CNTFs enables excellent flexibility, showing a negligible capacitance decay after 15 000 bending cycles, even with tight knots in the middle. These results highlight the excellent potential of highly densified CNTFs in next-generation flexible supercapacitors for practical wearable applications. English AMER CHEMICAL SOC Hybrid Polyaniline/Liquid Crystalline CNT Fiber Composite for Ultimate Flexible Supercapacitors Article 10.1021/acsaem.0c02217 1 ACS Applied Energy Materials, v.4, no.2, pp.1130 - 1142 ACS Applied Energy Materials 4 2 1130 1142 N scie scopus 000621660800012 2-s2.0-85100211594 Chemistry, Physical Energy & Fuels Materials Science, Multidisciplinary Chemistry Energy & Fuels Materials Science Article carbon nanotube fiber polyaniline wearable energy storage sonochemistry fiber-shaped supercapacitor