Natural Polymers for Green Supercapacitors

Natural Polymers for Green Supercapacitors

Water-processable natural polymers represent a valuable alternative for the sustainable manufacturing of electrical double layer capacitors (EDLCs). Here, we demonstrate for the first time the feasibility of the use of pullulan to produce high mass loading electrodes (>10 mg cm<sup>−2</s...

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Main Authors: Giovanni Emanuele Spina, Federico Poli, Alessandro Brilloni, Daniele Marchese, Francesca Soavi
Format: Article
Language:English
Published: MDPI AG 2020-06-01
Series:Energies
Subjects:
green supercapacitor
water processable polymer
pullulan
ionic liquid
electrospinning
Online Access:https://www.mdpi.com/1996-1073/13/12/3115
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spelling doaj-315835cb670349cfb83c7d0737a6ac742020-11-25T03:03:28ZengMDPI AGEnergies1996-10732020-06-01133115311510.3390/en13123115Natural Polymers for Green SupercapacitorsGiovanni Emanuele Spina0Federico Poli1Alessandro Brilloni2Daniele Marchese3Francesca Soavi4Department of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum Universita’ di Bologna, Via Selmi 2, 40126 Bologna, ItalyDepartment of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum Universita’ di Bologna, Via Selmi 2, 40126 Bologna, ItalyDepartment of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum Universita’ di Bologna, Via Selmi 2, 40126 Bologna, ItalyDepartment of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum Universita’ di Bologna, Via Selmi 2, 40126 Bologna, ItalyDepartment of Chemistry “Giacomo Ciamician”, Alma Mater Studiorum Universita’ di Bologna, Via Selmi 2, 40126 Bologna, ItalyWater-processable natural polymers represent a valuable alternative for the sustainable manufacturing of electrical double layer capacitors (EDLCs). Here, we demonstrate for the first time the feasibility of the use of pullulan to produce high mass loading electrodes (>10 mg cm<sup>−2</sup>) at low binder content (10%) for ionic-liquid based EDLCs. Pullulan has also been processed as a porous separator by electrospinning. Its ionic resistance and thermal stability have been evaluated in different electrolytes and were found to be superior compared to those of a cellulose triacetate electrospun separator. Pullulan-ionic liquid EDLCs were, thus, assembled and charged up to 3.2 V. The EDLCs delivered specific energy and power of 7.2 Wh kg<sup>−1</sup> and 3.7 kW kg<sup>−1</sup> and featured good cycling stability over 5000 cycles.https://www.mdpi.com/1996-1073/13/12/3115green supercapacitorwater processable polymerpullulanionic liquidelectrospinning
collection DOAJ
language English
format Article
sources DOAJ
author Giovanni Emanuele Spina
Federico Poli
Alessandro Brilloni
Daniele Marchese
Francesca Soavi
spellingShingle Giovanni Emanuele Spina
Federico Poli
Alessandro Brilloni
Daniele Marchese
Francesca Soavi
Natural Polymers for Green Supercapacitors
Energies
green supercapacitor
water processable polymer
pullulan
ionic liquid
electrospinning
author_facet Giovanni Emanuele Spina
Federico Poli
Alessandro Brilloni
Daniele Marchese
Francesca Soavi
author_sort Giovanni Emanuele Spina
title Natural Polymers for Green Supercapacitors
title_short Natural Polymers for Green Supercapacitors
title_full Natural Polymers for Green Supercapacitors
title_fullStr Natural Polymers for Green Supercapacitors
title_full_unstemmed Natural Polymers for Green Supercapacitors
title_sort natural polymers for green supercapacitors
publisher MDPI AG
series Energies
issn 1996-1073
publishDate 2020-06-01
description Water-processable natural polymers represent a valuable alternative for the sustainable manufacturing of electrical double layer capacitors (EDLCs). Here, we demonstrate for the first time the feasibility of the use of pullulan to produce high mass loading electrodes (>10 mg cm<sup>−2</sup>) at low binder content (10%) for ionic-liquid based EDLCs. Pullulan has also been processed as a porous separator by electrospinning. Its ionic resistance and thermal stability have been evaluated in different electrolytes and were found to be superior compared to those of a cellulose triacetate electrospun separator. Pullulan-ionic liquid EDLCs were, thus, assembled and charged up to 3.2 V. The EDLCs delivered specific energy and power of 7.2 Wh kg<sup>−1</sup> and 3.7 kW kg<sup>−1</sup> and featured good cycling stability over 5000 cycles.
topic green supercapacitor
water processable polymer
pullulan
ionic liquid
electrospinning
url https://www.mdpi.com/1996-1073/13/12/3115
work_keys_str_mv AT giovanniemanuelespina naturalpolymersforgreensupercapacitors
AT federicopoli naturalpolymersforgreensupercapacitors
AT alessandrobrilloni naturalpolymersforgreensupercapacitors
AT danielemarchese naturalpolymersforgreensupercapacitors
AT francescasoavi naturalpolymersforgreensupercapacitors
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