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Yu H, Liu G, Wang M, Ren R, Shim G, Kim JY, Tran MX, Byun D, Lee JK. Plasma-Assisted Surface Modification on the Electrode Interface for Flexible Fiber-Shaped Zn-Polyaniline Batteries. ACS Appl Mater Interfaces 2020; 12:5820-5830. [PMID: 31922390 DOI: 10.1021/acsami.9b19172] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A novel flexible fiber-shaped zinc-polyaniline battery (FZPB) is proposed to enhance the electrochemical performance, mass loading, and stability of polyaniline cathodes. To this end, electron-cyclotron-resonance oxygen plasma-modified carbon fibers are employed. During plasma treatment, on the carbon-fiber surface, O2+ plasma breaks the C-C, C-H, and C-N bonds to form C radicals, while the O2 molecules are broken down to reactive oxygen species (O+, O2+, O2+, and O22+). The C radicals and the reactive oxygen species are combined to homogeneously form oxygen functional groups, such as -OH, -COOH, and -C═O. The surface area and total pore volume of the treated carbon fibers increase as the plasma attacks. During electrodeposition, aniline interacts with the oxygen functional groups to form N-O and N-H bonds and π-π stacking, resulting in a homogeneous and high-loading polyaniline structure and improved adhesion between polyaniline and carbon fibers. In an FZPB, the cathode with plasma-treated carbon fibers and a polyaniline loading of 0.158 mg mgCF-1 (i.e., 2.36 mg cmCF-1) exhibits a capacity retention of 95.39% after 200 cycles at 100 mA g-1 and a discharge capacity of 83.96 mA h g-1 at such a high current density of 2000 mA g-1, which are ∼1.67 and 1.24 times those of the pristine carbon-fiber-based one, respectively. Furthermore, the FZPB exhibits high flexibility with a capacity retention of 86.4% after bending to a radius of 2.5 mm for 100 cycles as a wearable energy device.
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Affiliation(s)
- Hyunjin Yu
- Center for Energy Storage Research, Clean Energy Institute , Korea Institute of Science and Technology (KIST) , Hwarang-ro 14-gil 5 , Seongbuk-gu, Seoul 02792 , Republic of Korea
- Department of Material Science & Engineering , Korea University , Anam-ro , Seongbuk-gu, Seoul 02841 , Republic of Korea
| | - Guicheng Liu
- Center for Energy Storage Research, Clean Energy Institute , Korea Institute of Science and Technology (KIST) , Hwarang-ro 14-gil 5 , Seongbuk-gu, Seoul 02792 , Republic of Korea
- Department of Physics , Dongguk University , Seoul 04620 , Republic of Korea
| | - Manxiang Wang
- Department of Physics , Dongguk University , Seoul 04620 , Republic of Korea
| | - Ren Ren
- Center for Energy Storage Research, Clean Energy Institute , Korea Institute of Science and Technology (KIST) , Hwarang-ro 14-gil 5 , Seongbuk-gu, Seoul 02792 , Republic of Korea
| | - Gayoung Shim
- Center for Energy Storage Research, Clean Energy Institute , Korea Institute of Science and Technology (KIST) , Hwarang-ro 14-gil 5 , Seongbuk-gu, Seoul 02792 , Republic of Korea
- Department of Material Science & Engineering , Korea University , Anam-ro , Seongbuk-gu, Seoul 02841 , Republic of Korea
| | - Ji Young Kim
- Center for Energy Storage Research, Clean Energy Institute , Korea Institute of Science and Technology (KIST) , Hwarang-ro 14-gil 5 , Seongbuk-gu, Seoul 02792 , Republic of Korea
- Department of Chemical and Biomolecular Engineering , Yonsei University , 50 Yonsei-ro , Seodaemun-gu, Seoul 03722 , Republic of Korea
| | - Minh Xuan Tran
- Center for Energy Storage Research, Clean Energy Institute , Korea Institute of Science and Technology (KIST) , Hwarang-ro 14-gil 5 , Seongbuk-gu, Seoul 02792 , Republic of Korea
- Department of Energy and Environment Engineering, KIST-School , Korea University of Science and Technology (UST) , Hwarang-ro 14-gil 5 , Seongbuk-gu, Seoul 02792 , Republic of Korea
| | - Dongjin Byun
- Department of Material Science & Engineering , Korea University , Anam-ro , Seongbuk-gu, Seoul 02841 , Republic of Korea
| | - Joong Kee Lee
- Center for Energy Storage Research, Clean Energy Institute , Korea Institute of Science and Technology (KIST) , Hwarang-ro 14-gil 5 , Seongbuk-gu, Seoul 02792 , Republic of Korea
- Department of Energy and Environment Engineering, KIST-School , Korea University of Science and Technology (UST) , Hwarang-ro 14-gil 5 , Seongbuk-gu, Seoul 02792 , Republic of Korea
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