Kim Jisu Kang, Jin Gu Choi Jaewon Paul V. Braun Kim Sung-Kon 2024-01-12T03:32:56Z 2024-01-12T03:32:56Z 2022-11-25 2021-12 2574-0962 https://pubs.kist.re.kr/handle/201004/76814 Herein, we demonstrate the formation of fiber electrodes on a carbon fiber (CF) bundle with a surface that is mesostructured by single-walled carbon nanotubes via colloidal self-assembly. The three-dimensional ordered structure of the fiber electrodes (M-CNT@CF) provides porosity and bicontinuous paths for charge transport, resulting in high energy and considerable rate retention capability as compared with non-structured CF and CNT-coated CF electrodes. A fiber microsupercapacitor (f-MSC) composed of a twisted pair of fiber electrodes with a solid polymer electrolyte shows significant capacitance (355 mF cm(-3)), rate retention capability (92% of low-current capacitance), and considerable cycle stability (99% retention of initial capacitance) for at least 7000 charge-discharge cycles and even under severe mechanical stress. In particular, M-CNT@CF is a promising template for active materials experiencing a Faradic reaction, such as manganese oxide (MnO2). As an added benefit of MnO2 plating, the capacitance of the resulting hybrid fiber electrodes (MnO2@M-CNT@CF) is 6.6 times greater than that of M-CNT@CF. This also demonstrates that the MnO2 plating significantly contributes to performance improvement when applied to the mesostructured electrode (M-CNT@CF) rather than a nonporous material (CF). English AMER CHEMICAL SOC Fiber Electrodes Mesostructured on Carbon Fibers for Energy Storage Article 10.1021/acsaem.1c02423 1 ACS Applied Energy Materials, v.4, no.12, pp.13716 - 13724 ACS Applied Energy Materials 4 12 13716 13724 N scie scopus 000756324400038 2-s2.0-85120354425