Volume 9, Issue 4 2401478
Research Article

Versatile and Fast Electrochemical Activation Method for Carbon Nanotube Fibers with Diverse Active Materials

Sungju Lee

Sungju Lee

Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong ro, Bondong-eup, Wanju-gun, Jeonbuk, 55324 South Korea

Department of Chemical and Biomolecular Engineering (BK-21 Plus), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141 South Korea

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Hayoung Yu

Hayoung Yu

Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong ro, Bondong-eup, Wanju-gun, Jeonbuk, 55324 South Korea

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Min Gook Han

Min Gook Han

Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong ro, Bondong-eup, Wanju-gun, Jeonbuk, 55324 South Korea

Department of Environmental Engineering, Chungbuk National University, Chungae-ro 1, Seowon-Gu, Cheongju, Chungbuk, 28644 South Korea

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Hyewon Jung

Hyewon Jung

Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong ro, Bondong-eup, Wanju-gun, Jeonbuk, 55324 South Korea

Department of Chemical and Biomolecular Engineering, Sogang University, 35 Baekbeon-ro, Mapo-gu, Seoul, 04107 South Korea

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Hee-Tae Jung

Corresponding Author

Hee-Tae Jung

Department of Chemical and Biomolecular Engineering (BK-21 Plus), Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141 South Korea

E-mail: [email protected]; [email protected]; [email protected]

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Seung Min Kim

Corresponding Author

Seung Min Kim

Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong ro, Bondong-eup, Wanju-gun, Jeonbuk, 55324 South Korea

E-mail: [email protected]; [email protected]; [email protected]

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Hyeon Su Jeong

Corresponding Author

Hyeon Su Jeong

Institute of Advanced Composite Materials, Korea Institute of Science and Technology (KIST), 92 Chudong ro, Bondong-eup, Wanju-gun, Jeonbuk, 55324 South Korea

E-mail: [email protected]; [email protected]; [email protected]

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First published: 17 December 2024

Abstract

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.

Conflict of Interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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