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Highly Flexible Energy Storage Electrodes Based on In Situ Synthesis of Graphene/Polyselenophene Nanohybrid Materials

Published online by Cambridge University Press:  06 February 2015

Jin Wook Park  and
Jyongsik Jang
Jin Wook Park
Affiliation:
School of Chemical and Biological Engineering, College of Engineering, Seoul National University (SNU), Seoul, Korea.
Jyongsik Jang
Affiliation:
School of Chemical and Biological Engineering, College of Engineering, Seoul National University (SNU), Seoul, Korea.
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Abstract

A new class of graphene–polyselenophene (PSe) hybrid nanocomposite was successfully synthesized using an in situ synthetic method. The synthesized graphene–PSe nanocomposite exhibited unique properties including a large voltage window, high conductivity, and good mechanical properties. The graphene–PSe nanohybrid reduced the dynamic resistance of electrolyte ions and enabled high charge–discharge rates, thereby enabling high-performance supercapacitance. The results were attributed to synergetic effects between graphene and conducting polymers (CPs), which enhanced charge transport, surface area, and hybrid supercapacitance by combining the properties of electrolytic double-layer capacitors (EDLCs) with those of psedocapacitors. Additionally, a flexible supercapacitor based on the graphene–PSe nanohybrid was successfully demonstrated. To fabricate binder-free supercapacitors, chemical vapor deposition (CVD) and vapor deposition polymerization (VDP) methods were employed. The fabricated all-solid-state supercapacitor exhibited outstanding mechanical and electrochemical performance, even after several bending motions. The novel graphene–PSe nanocomposite material is promising for new energy storage and conversion applications.

Keywords

chemical vapor deposition (CVD) (deposition)nanostructureenergy storage
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1727: Symposium K – Graphene and Graphene Nanocomposites , 2015 , mrsf14-1727-k20-15
Copyright
Copyright © Materials Research Society 2015 

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