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King-Rogers Chitin Capacitors Manuscript Full 03-19-18.pdf (891.92 kB)

Chitin for the Replacement of Fluoropolymers in the Assembly of Electrochemical Devices

submitted on 16.04.2018, 19:43 and posted on 17.04.2018, 13:37 by Catherine King, Max E. Easton, Robin D. Rogers
Chitin and graphene/chitin composite films were prepared using ionic liquid processing and tested as separators and electrodes, respectively, in a supercapacitor to demonstrate the construction and function of an energy storage device which is constructed solely from bio-based polymer materials. The dry films possessed high thermal (Td = 265 and 246 °C) and mechanical (tensile strength = 5(1) and 1.7(2) MPa) stabilities. Once soaked in an aqueous electrolyte (2 M (NH4)2SO4) for use in a supercapacitor test cell, the device reached a peak capacitance value of 2.4 F/g. This work demonstrates a first step towards a scalable method for the preparation and assembly of biorenewable electrochemical devices, which avoid the use of unsustainable fluoropolymers and solvents, and is poised to be an important part of environmentally-sustainable economies.


Canada Excellence Research Chair (CERC)


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McGill University



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Declaration of Conflict of Interest

Dr. Robin D. Rogers has partial ownership of 525 Solutions, Inc. and patents related to the work described here. McGill University maintains approved Conflict of Interest Management Plans.