uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Ultrafast All-Polymer Paper-Based Batteries
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Nanotechnology and Functional Materials. (Nanoteknologi och funktionella material)ORCID iD: 0000-0002-5496-9664
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Inorganic Chemistry. (oorganisk kemi)
Show others and affiliations
2009 (English)In: Nano letters (Print), ISSN 1530-6984, E-ISSN 1530-6992, Vol. 9, no 10, 3635-3639 p.Article in journal (Refereed) Published
Abstract [en]

Conducting polymers for battery applications have been subject to numerous investigations during the last two decades. However, the functional charging rates and the cycling stabilities have so far been found to be insufficient for practical applications. These shortcomings can, at least partially, be explained by the fact that thick layers of the conducting polymers have been used to obtain sufficient capacities of the batteries. In the present letter, we introduce a novel nanostructured high-surface area electrode material for energy storage applications composed of cellulose fibers of algal origin individually coated with a 50 nm thin layer of polypyrrole. Our results show the hitherto highest reported charge capacities and charging rates for an all polymer paper-based battery. The composite conductive paper material is shown to have a specific surface area of 80 m(2) g(-1) and batteries based on this material can be charged with currents as high as 600 mA cm(-2) with only 6% loss in capacity over 100 subsequent charge and discharge cycles. The aqueous-based batteries, which are entirely based on cellulose and polypyrrole and exhibit charge capacities between 25 and 33 mAh g(-1) or 38-50 mAh g(-1) per weight of the active material, open up new possibilities for the production of environmentally friendly, cost efficient, up-scalable and lightweight energy storage systems.

Place, publisher, year, edition, pages
American Chemical Society , 2009. Vol. 9, no 10, 3635-3639 p.
National Category
Engineering and Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
URN: urn:nbn:se:uu:diva-108553DOI: 10.1021/nl901852hISI: 000270670500045PubMedID: 19739594OAI: oai:DiVA.org:uu-108553DiVA: diva2:236286
Available from: 2009-09-22 Created: 2009-09-22 Last updated: 2017-12-13Bibliographically approved
In thesis
1. Development of Cellulose-Based, Nanostructured, Conductive Paper for Biomolecular Extraction and Energy Storage Applications
Open this publication in new window or tab >>Development of Cellulose-Based, Nanostructured, Conductive Paper for Biomolecular Extraction and Energy Storage Applications
2011 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Conductive paper materials consisting of conductive polymers and cellulose are promising for high-tech applications (energy storage and biosciences) due to outstanding aspects of environmental friendliness, mechanical flexibility, electrical conductivity and efficient electroactive behavior. Recently, a conductive composite paper material was developed by covering the individual nanofibers of cellulose from the green algae Cladophora with a polypyrrole (PPy) layer. The PPy-Cladophora cellulose composite paper is featured with high surface area (80 m2 g-1), electronic conductivity (~2 S cm-1), thin conductive layer (~50 nm) and easily up-scalable manufacturing process. This doctoral thesis reports the development of the PPy-Cladophora composite as an electrode material in electrochemically controlled solid phase ion-exchange of biomolecules and all-polymer based energy storage devices. First, electrochemical ion-exchange properties of the PPy-Cladophora cellulose composite were investigated in electrolytes containing three different types of anions, and it was found that smaller anions (nitrate and chloride) are more readily extracted by the composite than lager anions (p-toluene sulfonate). The influence of differently sized oxidants used during polymerization on the anion extraction capacity of the composite was also studied. The composites synthesized with two different oxidizing agents, i.e. iron (III) chloride and phosphomolybdic acid (PMo), were investigated for their ability to extract anions of different sizes. It was established that the number of absorbed ions was larger for the iron (III) chloride-synthesized sample than for the PMo-synthesized sample for all four electrolytes studied. Further, PPy-Cladophora cellulose composites have shown remarkable electrochemically controlled ion extraction capacities when investigated as a solid phase extraction material for batch-wise extraction and release of DNA oligomers. In addition, composite paper was also investigated as an electrode material in the symmetric non-metal based energy storage devices. The salt and paper based energy storage devices exhibited charge capacities (38−50 mAh g−1) with reasonable cycling stability, thereby opening new possibilities for the production of environmentally friendly, cost efficient, up-scalable and lightweight energy storage systems. Finally, micron-sized chopped carbon fibers (CCFs) were incorporated as additives to improve the charge-discharge rates of paper-based energy storage devices and to enhance the DNA release efficiency. The results showed the independent cell capacitances of ~60-70 F g-1 (upto current densities of 99 mA cm2) and also improved the efficiency of DNA release from 25 to 45%.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2011. 65 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 852
Keyword
Polypyrrole, Cladophora cellulose, Conductive paper, Electrochemically controlled ion-exchange, DNA extraction, Paper-based energy storage devices, Chopped Carbon fibers
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-158444 (URN)978-91-554-8150-6 (ISBN)
Public defence
2011-10-21, Polhemsalen, Ångström laboratory, Uppsala, 10:15 (English)
Opponent
Supervisors
Available from: 2011-09-30 Created: 2011-09-07 Last updated: 2011-11-03Bibliographically approved
2. Nanocellulose and Polypyrrole Composites for Electrical Energy Storage
Open this publication in new window or tab >>Nanocellulose and Polypyrrole Composites for Electrical Energy Storage
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

To meet the predicted increase in demand for energy storage in tomorrow's society, the development of inexpensive, flexible, lightweight and sustainable energy-storage materials is essential. In this respect, devices based on electroactive organic molecules, such as conducting polymers, are highly interesting. The aim of this thesis was to evaluate the use of nanocellulose as a matrix material in composites of cellulose and the electroactive polymer polypyrrole (PPy), and the use of these composites in all-polymer paper-based energy-storage devices.  

Pyrrole was polymerized using FeCl3 onto cellulose nanofibers in the form of a hydrogel. The resulting PPy-coated fibers were washed with water and dried into a high surface area, conductive paper material. Variations in the drying technique provided a way of controlling the porosity and the surface area of wood-based cellulose nanofibers, as the properties of the cellulose were found to have a large influence on the composite structure. Different nanocellulose fibers, of algal and wood origin, were evaluated as the reinforcing phase in the conductive composites. These materials had conductivities of 1–6 S/cm and specific surface areas of up to 246 m2/g at PPy weight fractions around 67%.  

Symmetrical supercapacitor devices with algae-based nanocellulose-PPy electrodes and an aqueous electrolyte showed specific charge capacities of around 15 mAh/g and specific capacitances of around 35 F/g, normalized with respect to the dry electrode weight. Potentiostatic charging of the devices was suggested as a way to make use of the rapid oxidation and reduction processes in these materials, thus minimizing the charging time and the effect of the IR drop in the device, and ensuring charging to the right potential. Repeated charging and discharging of the devices revealed a 10–20% loss in capacity over 10 000 cycles. Upon up-scaling of the devices, it was found that an improved cell design giving a lower cell resistance was needed in order to maintain high charge and discharge rates.  

The main advantages of the presented concept of nanocellulose-PPy-based electrical energy storage include the eco-friendly raw materials, an up-scalable and potentially cost-effective production process, safe operation, and the controllable porosity and moldability offered by the nanocellulose fiber matrix. Integrating energy storage devices into paper could lead to un- precedented opportunities for new types of consumer electronics. Future research efforts should be directed at increasing the energy density and improving the stability of this type of device as well as advancing the fundamental understanding of the current limitations of these properties.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2012. 71 p.
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 898
Keyword
conducting polymer, polypyrrole, cellulose, nanocellulose, porosity, composite, energy storage, battery, supercapacitor
National Category
Physical Sciences
Research subject
Engineering Science with specialization in Materials Science
Identifiers
urn:nbn:se:uu:diva-168664 (URN)978-91-554-8276-3 (ISBN)
Public defence
2012-03-30, Häggsalen, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 09:30 (English)
Opponent
Supervisors
Available from: 2012-03-09 Created: 2012-02-14 Last updated: 2012-03-29Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textPubMed

Authority records BETA

Nyström, GustavRazaq, AamirStrømme, MariaMihranyan, Albert

Search in DiVA

By author/editor
Nyström, GustavRazaq, AamirStrømme, MariaMihranyan, Albert
By organisation
Nanotechnology and Functional MaterialsInorganic Chemistry
In the same journal
Nano letters (Print)
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 2281 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf