Lee, Sungju Yu, Hayoung Han, Min Gook Jung, Hyewon Jung, Hee-Tae Kim, Seung Min Jeong, Hyeon Su 2025-03-20T14:30:13Z 2025-03-20T14:30:13Z 2025-03-19 2025-04 2366-9608 https://pubs.kist.re.kr/handle/201004/151922 In this study, the challenge of non-electrochemical activity in carbon nanotube fibers (CNTFs) is addressed by developing a modified chlorosulfonic acid (CSA) densification process specifically developed for directly spun CNTFs. This post-treatment method, well-known for enhancing the physical properties of CNTFs, utilizes the double diffusion phenomenon to efficiently integrate a diverse range of active materials, from conductive polymers like polyaniline (PANI) to metal oxides like nickel oxide (NiO), into the fibers. This universal and cost-effective approach not only simplifies the integration process but also significantly boosts both the electrochemical and physical properties of the fibers. For instance, the PANI@CNTF composite exhibited a remarkable 17-fold increase in specific capacitance and a two-fold increase in load value compared to its pristine counterparts. This method proves straightforward, efficient, and versatile, making it suitable for developing fiber-shaped electrodes that advance the capabilities of wearable energy storage systems. English WILEY-V C H VERLAG GMBH Versatile and Fast Electrochemical Activation Method for Carbon Nanotube Fibers with Diverse Active Materials Article 10.1002/smtd.202401478 1 Small Methods, v.9, no.4 Small Methods 9 4 N scie scopus 001379009100001 2-s2.0-85212281235 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article COMPOSITE STRENGTH ANODES CNT industrial carbon nanotube fiber supercapacitor composite