Issue 19, 2018

Intrinsically microporous polymer-based hierarchical nanostructuring of electrodes via nonsolvent-induced phase separation for high-performance supercapacitors

Abstract

The growing demands of next-generation applications for high power and energy sources necessitate advances in hierarchically porous carbon-based energy storage materials, which improve the overall kinetics of electrolytic reactions by providing efficient ion and electron transport pathways and facilitate electrolyte infiltration into the electrode during charging/discharging. Herein, we fabricate hierarchically structured porous carbon electrodes (cNPIM), prepared by solution casting of a polymer of intrinsic microporosity (PIM-1) followed by nonsolvent-induced phase separation and carbonization. The obtained material exhibits a considerable surface area (∼2100 m2 g−1), high electrical conductivity (150 S cm−1), high specific capacitances (345, 235, and 195 F g−1 in three-, two-electrode aqueous systems, and two-electrode organic systems, respectively) at 1 A g−1, and an exceptional specific energy of 43.2 W h kg−1 at a specific power of 1.25 kW kg−1, featuring a pore size gradient in the surface normal direction.

Graphical abstract: Intrinsically microporous polymer-based hierarchical nanostructuring of electrodes via nonsolvent-induced phase separation for high-performance supercapacitors

Supplementary files

Article information

Article type
Communication
Submitted
16 mars 2018
Accepted
25 avr. 2018
First published
26 avr. 2018

J. Mater. Chem. A, 2018,6, 8909-8915

Intrinsically microporous polymer-based hierarchical nanostructuring of electrodes via nonsolvent-induced phase separation for high-performance supercapacitors

J. W. Jeon, J. H. Han, S. Kim, D. Kim, Y. S. Kim, D. H. Suh, Y. T. Hong, T. Kim and B. G. Kim, J. Mater. Chem. A, 2018, 6, 8909 DOI: 10.1039/C8TA02451K

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