Dispersant-free conducting pastes for flexible and printed nanocarbon electrodes

Joong Tark Han (), Bo Hwa Jeong, Seon Hee Seo, Kwang Chul Roh, Sumi Kim, Sua Choi, Jong Seok Woo, Ho Young Kim, Jeong In Jang, Du-Chul Shin, Sooyeon Jeong, Hee Jin Jeong, Seung Yol Jeong and Geon-Woong Lee
Additional contact information
Joong Tark Han: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute
Bo Hwa Jeong: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute
Seon Hee Seo: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute
Kwang Chul Roh: Energy Materials Center, Korea Institute of Ceramic Engineering and Technology
Sumi Kim: Energy Materials Center, Korea Institute of Ceramic Engineering and Technology
Sua Choi: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute
Jong Seok Woo: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute
Ho Young Kim: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute
Jeong In Jang: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute
Du-Chul Shin: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute
Sooyeon Jeong: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute
Hee Jin Jeong: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute
Seung Yol Jeong: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute
Geon-Woong Lee: Nano Carbon Materials Research Group, Korea Electrotechnology Research Institute

Nature Communications, 2013, vol. 4, issue 1, 1-8

Abstract: Abstract The dispersant-free fabrication of highly conducting pastes based on organic solvents with nanocarbon materials such as carbon nanotubes and graphene nanoplatelets has been hindered by severe agglomeration. Here we report a straightforward method for fabricating nanocarbon suspensions with >10% weight concentrations in absence of organic dispersants. The method involves introducing supramolecular quadruple hydrogen-bonding motifs into the nanocarbon materials without sacrificing the electrical conductivity. Printed films of these materials show high electrical conductivity of ~500,000 S m−1 by hybridization with 5 vol% silver nanowires. In addition, the printed nanocarbon electrodes provide high-performance alternatives to the platinum catalytic electrodes commonly used in dye-sensitized solar cells and electrochemical electrodes in supercapacitors. The judicious use of supramolecular interactions allows fabrication of printable, spinnable and chemically compatible conducting pastes with high-quality nanocarbon materials, useful in flexible electronics and textile electronics.

Date: 2013
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DOI: 10.1038/ncomms3491

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