Photopolymerization of Diacetylene on Aligned Multiwall Carbon Nanotube Microfibers for High-Performance Energy Devices.

Autor: Ulaganathan M, Hansen RV, Drayton N; Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , 21 Nanyang Link, 637371 Singapore.; L. G. Rich Environment Laboratory, Clemson University , 343 Computer Court, Clemson, South Carolina 29625, United States., Hingorani H; Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , 21 Nanyang Link, 637371 Singapore., Kutty RG, Joshi H; Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , 21 Nanyang Link, 637371 Singapore., Sreejith S; Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , 21 Nanyang Link, 637371 Singapore., Liu Z, Yang J; Department of Mechanical and Aerospace Engineering, Hong Kong University of Science and Technology , Clear Water Bay, Hong Kong., Zhao Y; Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , 21 Nanyang Link, 637371 Singapore.
Jazyk: angličtina
Zdroj: ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2016 Dec 07; Vol. 8 (48), pp. 32643-32648. Date of Electronic Publication: 2016 Nov 23.
DOI: 10.1021/acsami.6b12171
Abstrakt: Linear two-dimensional materials have recently attracted an intense interest for supercapacitors because of their potential uses as electrodes in next-generation wearable electronics. However, enhancing the electrochemical properties of these materials without complicated structural modifications remains a challenge. Herein, we present the preparation of a hybrid electrode system via polydiacetylene (PDA) cloaking on the surface of aligned multiwall carbon nanotubes (MWCNTs) through self-assembly based in situ photopolymerization. This strategy eliminates the need for initiators and binders that hinder electrochemical performance in conventional conducting polymer based composite electrodes. As noncovalent PDA cloaking did not alter the chemical structure of MWCNTs, high inherent conductivity from sp 2 hybridized carbon was preserved. The resulting hybrid microfiber (MWCNT@PDA) exhibited a significant increase in specific capacitance (1111 F g -1 ) when compared to bare MWCNTs (500 F g -1 ) and PDA (666.7 F g -1 ) in a voltage window of 0-1.2 V at a current density of 3 A g -1 in 0.5 M K 2 SO 4 electrolyte. The specific capacitance was retained (ca. 95%) after 7000 charge/discharge cycles. The present results suggest that aligned MWCNTs cloaked with conjugated polymers could meet the demands for future flexible electronics.
Databáze: MEDLINE
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