In this section, you can access to the latest technical information related to the FUTURE project topic.

Facile fabrication of mesoporous carbon from mixed polymer precursor of PVDF and PTFE for high-power supercapacitors

Highly porous activated carbon is an essential electrode material for high-energy-density supercapacitors, since the electrical charge is stored through electrolyte-ion adsorption on an electrode with high surface area. Here, we report the facile and simple synthesis of an activated carbon with tailored porosity from the blended polymers with different thermal stabilities, i.e., polyvinylidene fluoride (PVDF) and polytetrafluoroethylene (PTFE). Through a thermal treatment (900??C) under inert atmosphere, PVDF is simply transformed into highly microporous (<2?nm) carbon, owing to the release of the combined hydrogen and fluoride. The microporous surface morphology reduces the specific capacitance at high discharging rates. Meanwhile, the PTFE is completely evaporated to the C2F4 gas at 900??C under an inert environment. The mixed polymer with a specific ratio (PVDF:PTFE?=?2:1) is carbonized to porous carbon with a highly accessible surface area. The mesopore (2?50?nm) formed via C2F4-gas escape from PTFE facilitates ionic transfer to the surface at a rapid discharging rate with the high specific capacitance, i.e., 99?F?g?1. Compared with the PVDF-alone derived carbon, the carbon derived from the appropriately mixed precursors exhibits a 19 % higher specific capacitance and increased capacity retention at a 10-fold faster discharging rate.

Graphical abstract

» Author: In-Sik Son, Youngseok Oh, Seong-Hoon Yi, Won Bin Im, Sang-Eun Chun

» More Information

« Go to Technological Watch



AIMPLAS Instituto Tecnológico del Plástico

C/ Gustave Eiffel, 4
(València Parc Tecnològic) - 46980
PATERNA (Valencia) - SPAIN

PHONE

(+34) 96 136 60 40

EMAIL

Project Management department - Sustainability and Industrial Recovery
life-future-project@aimplas.es