Cycle stability and dielectric properties of a new biodegradable energy storage material

Author(s)

Giovanni Landi, Andrea Sorrentino, Filippo Fedi, Heinz Christoph Neitzert, Salvatore Iannace

Abstract

A biodegradable low-cost energy storage material has been obtained by

using a self-assembly nanocomposite gelatin and graphene flakes. The

blends with various ratio of graphene and gelatin have been prepared and

characterized by Raman spectroscopy, cyclevoltammetry measurements,

chronopotentiometry measurements and impedance spectroscopy. The ability

of the biopolymer to bind the water–glycerol molecules and the graphene

flakes leads to an improvement of the dielectric properties with a

value of the surface capacitance of about 3 orders higher (10 mF cm⁻²)

than that measured for the device based on activated carbon. An

electrical oxidation at the anode contact has been observed by applying

to the device a higher bias voltage. The modified active material

exhibits an enhancement of the cycle stability with a further increase

of the surface capacitance (100 mF cm⁻²) and of the respective specific capacitance up to a value of about 380 F g⁻¹.

Organisation(s)

Electronic Properties of Materials

External organisation(s)

Università degli Studi di Salerno, Institute of Genetics and Biophysics "Adriano Buzzati-Traverso", CNR

Journal

Nano Energy

Volume

Pages

348-355

No. of pages

ISSN

2211-2855

DOI

https://doi.org/10.1016/j.nanoen.2015.09.006

Publication date

10-2015

Peer reviewed

Yes

Austrian Fields of Science 2012

103018 Materials physics, 210004 Nanomaterials

Keywords

ASJC Scopus subject areas

General Materials Science, Electrical and Electronic Engineering, Renewable Energy, Sustainability and the Environment

Sustainable Development Goals

SDG 6 - Clean Water and Sanitation

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