A mixed ionic–electronic conductor based on nanofibrillated cellulose composited with poly(3,4-ethylene-dioxythiophene):poly(styrene-sulfonate) along with high boiling point solvents is demonstrated in bulky electrochemical devices. The high electronic and ionic conductivities of the resulting nanopaper are exploited in devices which exhibit record values for the charge storage capacitance (1F) in supercapacitors and transconductance (1S) in electrochemical transistors.
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The work in Sweden was supported primarily by The Knut and Alice Wallenberg foundation KAW 2011.0050; and also by the Önnesjö Foundation, the Advanced Functional Materials Center at Linköping University, Stiftelsen för strategisk forskning (SSF), RISE Research Institutes of Sweden, and the U.S. National Science Foundation, Grant No. DMR-1262261.
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Malti, Abdellah; Edberg, Jesper; Granberg, Hjalmar; Khan, Zia Ullah; Andreasen, Jens W.; Liu, Xianjie; Zhao, Dan; Zhang, Hao; Yao, Yulong; Brill, Joseph W.; Engquist, Isak; Fahlman, Mats; Wågberg, Lars; Crispin, Xavier; and Berggren, Magnus, "An Organic Mixed Ion-Electron Conductor for Power Electronics" (2015). Physics and Astronomy Faculty Publications. 404.