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Carbon nanotube–polyaniline core–shell nanostructured hydrogel for electrochemical energy storage

Author(s)
Chen, Po-Yen; Hyder, Md Nasim; Qi, Jifa; Dorval Courchesne, Noemie-Manuelle; Belcher, Angela M; Hammond, Paula T; ... Show more Show less
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Abstract
Conductive polymer hydrogels, which synergize the advantageous features of hydrogels and conductive materials, have been utilized in many electrochemical energy storage applications. Here, we introduce phytic acid as (1) a dispersing agent for pristine multi-walled carbon nanotubes (MWNTs) in aqueous solution containing aniline and as (2) a gelator to form polyaniline (PANI)-based hydrogels after polymerization. The PANI-based hydrogels exhibit nanowire-based mesoporous networks with high surface area and electrical conductivity. The nanostructured core (MWNT)–shell (PANI) hydrogels show an improvement on the electrical conductivity from 0.21 to 1.54 S cm[superscript −1] as the loading of MWNTs increases from 0 to 5.0 wt%. The conducting nanowire-based networks with MWNT loadings of 3.0 wt% in the hydrogel provide efficient electron transport pathways that exhibit a maximal specific capacity of 609 F g[superscript −1]. The scalable and facile synthesis demonstrates excellent electrochemical performance, rendering it attractive for sensing, energy conversion, and energy storage applications.
Date issued
2015-04
URI
http://hdl.handle.net/1721.1/102443
Department
Massachusetts Institute of Technology. Department of Biological Engineering; Massachusetts Institute of Technology. Department of Chemical Engineering; Massachusetts Institute of Technology. Department of Materials Science and Engineering; Koch Institute for Integrative Cancer Research at MIT
Journal
RSC Advances
Publisher
Royal Society of Chemistry
Citation
Chen, Po-Yen, Noémie-Manuelle Dorval Courchesne, Md Nasim Hyder, Jifa Qi, Angela M. Belcher, and Paula T. Hammond. “Carbon Nanotube–polyaniline Core–shell Nanostructured Hydrogel for Electrochemical Energy Storage.” RSC Adv. 5, no. 48 (2015): 37970–37977.
Version: Original manuscript
ISSN
2046-2069

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