Electrochemical polymerization of pyrene derivatives on functionalized carbon nanotubes for pseudocapacitive electrodes

John C. Bachman, Reza Kavian, Daniel J. Graham, Dong Young Kim, Suguru Noda, Daniel G. Nocera (), Yang Shao-Horn () and Seung Woo Lee ()
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John C. Bachman: Massachusetts Institute of Technology
Reza Kavian: George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology
Daniel J. Graham: Harvard University
Dong Young Kim: Waseda University
Suguru Noda: Waseda University
Daniel G. Nocera: Harvard University
Yang Shao-Horn: Massachusetts Institute of Technology
Seung Woo Lee: George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology

Nature Communications, 2015, vol. 6, issue 1, 1-9

Abstract: Abstract Electrochemical energy-storage devices have the potential to be clean and efficient, but their current cost and performance limit their use in numerous transportation and stationary applications. Many organic molecules are abundant, economical and electrochemically active; if selected correctly and rationally designed, these organic molecules offer a promising route to expand the applications of these energy-storage devices. In this study, polycyclic aromatic hydrocarbons are introduced within a functionalized few-walled carbon nanotube matrix to develop high-energy, high-power positive electrodes for pseudocapacitor applications. The reduction potential and capacity of various polycyclic aromatic hydrocarbons are correlated with their interaction with the functionalized few-walled carbon nanotube matrix, chemical configuration and electronic structure. These findings provide rational design criteria for nanostructured organic electrodes. When combined with lithium negative electrodes, these nanostructured organic electrodes exhibit energy densities of ∼350 Wh kg−1electrode at power densities of ∼10 kW kg−1electrode for over 10,000 cycles.

Date: 2015
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DOI: 10.1038/ncomms8040

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