Porphyrin-Stabilized CNT in Nanofiber via Non-Covalent Interaction for Enhanced Electrochemical Performance
- Authors
- Lim, Alan Christian; Kwon, Hyuk Jae; Jadhav, Harsharaj S.; Seo, Jeong Gil
- Issue Date
- Jun-2018
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Porphyrin; Nanofiber; Carbon nanotube; Supercapacitor; Non-covalent interaction; Capacitance
- Citation
- ELECTROCHIMICA ACTA, v.274, pp.112 - 120
- Indexed
- SCIE
SCOPUS
- Journal Title
- ELECTROCHIMICA ACTA
- Volume
- 274
- Start Page
- 112
- End Page
- 120
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/16867
- DOI
- 10.1016/j.electacta.2018.04.064
- ISSN
- 0013-4686
- Abstract
- Herein, a new fabrication method for CNT nanofiber composite (pPC-FP) through non-covalent interaction between porphyrin monomers with CNTs is reported. This led to the alleviated agglomeration of pristine CNT without acid pre-treatment, producing a highly porous material with high surface area of 444 m(2)/g and narrow pore size distribution for all pPC-FP nanofiber composites. Enhanced performances of pPC-FP3 and pPC-FP5 (CNT nanofiber with porphyrin monomers) were brought about by the enhanced CNT dispersion, hence, better porosity as compared to pPC. Moreover, through the incorporation of porphyrin monomer, M-NeC bond was simultaneously formed and served as a contributor to the excellent capacitive performance of the material, resulting in the highest capacitance of 150 A/cm(2) at 0.25 mAh/cm(2) with 77 A/cm(2) at 2.5 mAh/cm(2). The composites also exhibited stable performance even after cycling at different current densities (0.25-2.5 mAh/cm(2)) for 3000 cycles with almost 100% columbic efficiency. Through p-p stacking interaction, the agglomeration was prevented and CNT was aligned along the axis of the polymer which rendered the nanofibers highly porous resulting to a conductive composite material with excellent electrochemical performance.
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