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Tammela, Petter
Publications (10 of 29) Show all publications
Wang, Z., Tammela, P., Nyholm, L. & Strömme, M. (2018). Nanocellulose-based energy storage devices. In: ACS (Ed.), 255th ACS National Meeting & Exposition 2018: . Paper presented at 255th ACS National Meeting & Exposition, New Orleans, March 18-22 2018. American Chemical Society (ACS)
Open this publication in new window or tab >>Nanocellulose-based energy storage devices
2018 (English)In: 255th ACS National Meeting & Exposition 2018 / [ed] ACS, American Chemical Society (ACS), 2018Conference paper, Oral presentation with published abstract (Refereed)
Place, publisher, year, edition, pages
American Chemical Society (ACS), 2018
National Category
Other Materials Engineering Medical Materials
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-349147 (URN)
Conference
255th ACS National Meeting & Exposition, New Orleans, March 18-22 2018
Available from: 2018-04-22 Created: 2018-04-22 Last updated: 2018-05-31Bibliographically approved
Wang, Z., Tammela, P., Strömme, M. & Nyholm, L. (2017). Cellulose-based Supercapacitors: Material and Performance Considerations. Advanced Energy Materials, 7(18), Article ID 1700130.
Open this publication in new window or tab >>Cellulose-based Supercapacitors: Material and Performance Considerations
2017 (English)In: Advanced Energy Materials, ISSN 1614-6832, Vol. 7, no 18, article id 1700130Article in journal (Refereed) Published
Abstract [en]

One of the biggest challenges we will face over the next few decades is finding a way to power the future while maintaining strong socioeconomic growth and a clean environment. A transition from the use of fossil fuels to renewable energy sources is expected. Cellulose, the most abundant natural biopolymer on earth, is a unique, sustainable, functional material with exciting properties: it is low-cost and has hierarchical fibrous structures, a high surface area, thermal stability, hydrophilicity, biocompatibility, and mechanical flexibility, which makes it ideal for use in sustainable, flexible energy storage devices. This review focuses on energy storage applications involving different forms of cellulose (i.e., cellulose microfibers, nanocellulose fibers, and cellulose nanocrystals) in supercapacitors, with particular emphasis on new trends and performance considerations relevant to these fields. Recent advances and approaches to obtaining high capacity devices are evaluated and the limitations of cellulose-based systems are discussed. For the first time, a combination of device-specific factors such as electrode structures, mass loadings, areal capacities, and volumetric properties are taken into account, so as to evaluate and compare the energy storage performance and to better assess the merits of cellulose-based materials with respect to real applications.

Place, publisher, year, edition, pages
WILEY: Wiley-VCH Verlagsgesellschaft, 2017
Keywords
cellulose, supercapacitor
National Category
Materials Chemistry Polymer Chemistry Engineering and Technology
Research subject
Chemistry; Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-333373 (URN)10.1002/aenm.201700130 (DOI)000411182500029 ()
Funder
Swedish Foundation for Strategic Research , RMA110012Stiftelsen Olle Engkvist ByggmästareSwedish Energy AgencyCarl Tryggers foundation
Available from: 2017-11-12 Created: 2017-11-12 Last updated: 2017-12-20Bibliographically approved
Pan, R., Cheung, O., Wang, Z., Tammela, P., Huo, J., Lindh, J., . . . Nyholm, L. (2016). Mesoporous Cladophora cellulose separators for lithium-ion batteries. Journal of Power Sources, 321, 185-192
Open this publication in new window or tab >>Mesoporous Cladophora cellulose separators for lithium-ion batteries
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2016 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 321, p. 185-192Article in journal (Refereed) Published
Abstract [en]

Much effort is currently made to develop inexpensive and renewable materials which can replace the polyolefin microporous separators conventionally used in contemporary lithium-ion batteries. In the present work, it is demonstrated that mesoporous Cladophora cellulose (CC) separators constitute very promising alternatives based on their high crystallinity, good thermal stability and straightforward manufacturing. The CC separators, which are fabricated using an undemanding paper-making like process involving vacuum filtration, have a typical thickness of about 35 mu m, an average pore size of about 20 nm, a Young's modulus of 5.9 GPa and also exhibit an ionic conductivity of 0.4 mS cm(-1) after soaking with 1 M LiPF6 EC: DEC (1/1, v/v) electrolyte. The CC separators are demonstrated to be thermally stable at 150 degrees C and electrochemically inert in the potential range between 0 and 5 V vs. Li+/Li. A LiFePO4/Li cell containing a CC separator showed good cycling stability with 99.5% discharge capacity retention after 50 cycles at a rate of 0.2 C. These results indicate that the renewable CC separators are well-suited for use in high-performance lithium-ion batteries.

Keywords
Separator, Cellulose, Crystallinity, Paper-making, Lithium-ion battery, Cladophora
National Category
Inorganic Chemistry Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-299548 (URN)10.1016/j.jpowsour.2016.04.115 (DOI)000377729200020 ()
Funder
Swedish Energy AgencyStandUpStiftelsen Olle Engkvist Byggmästare
Available from: 2016-07-25 Created: 2016-07-22 Last updated: 2017-12-30
Tammela, P. (2016). On the electrochemical performance of energy storage devices composed of cellulose and conducting polymers. (Doctoral dissertation). Uppsala: Acta Universitatis Upsaliensis
Open this publication in new window or tab >>On the electrochemical performance of energy storage devices composed of cellulose and conducting polymers
2016 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Applications that require electrical energy storage are becoming increasingly diverse. This development is caused by a number of factors, such as an increasing global energy demand, the advent of electric vehicles, the utilization of intermittent renewable energy sources, and advances in disposable and organic electronics. These applications will set different demands on their electrical energy storage and, thus, there will be no single technology used for all applications. For some applications the choice of energy storage materials will be extremely important. Conventional batteries and supercapacitors rely on the use of nonrenewable inorganic materials mined from depleting ores, hence, requiring large amounts of energy for their processing. Such materials also add a significant cost to the final product, making them less attractive for large scale applications. Conducting polymers, on the other hand, constitute a class of materials that can be used for organic matter based energy storage devices.

The aim of this thesis was to investigate the use of a composite consisting of the conducting polymer polypyrrole (PPy) and cellulose derived from Cladophora sp. algae for electrical energy storage. The polymer was coated onto the cellulose fibers by chemical polymerization resulting in a flexible material with high surface area. By using this composite as electrodes, electrochemical cells consisting of disposable and non-toxic materials can be assembled and used as energy storage devices. The resistances of these prototype cells were found to be dominated by the resistance of the current collectors and to scale with the thickness of the separator, and can hence be reduced by cell design. By addition of nanostructured PPy, the weight ratio of PPy in the composite could be increased, and the cell voltages could be enhanced by using a carbonized negative electrode. Composites of cellulose and poly(3,4-ethylenedioxythiophene) could also be synthesized and used as electrode materials. The porosities of the electrodes were controlled by mechanical compression of the composite or by coating of surface modified cellulose fibers with additional PPy. Finally, the self-discharge was studied extensively. It was found that oxygen was responsible for the oxidation of the negative electrode, while the rate of self-discharge of the positive electrode increases with increasing potential. Through measurements of the charge prior to and after self-discharge, as well as with an electrochemical quartz crystal microbalance, it was found that the self-discharge of the positive electrode was linked to an exchange of the counter ions by hydroxide ions. It is also demonstrated that the self-discharge rate of a symmetric PPy based device can be decreased dramatically by proper balancing of the electrode capacities and by reducing the oxygen concentration. The results of this work are expected to contribute towards future industrial implementation of electric energy storage devices based on organic materials.

Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2016. p. 64
Series
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1403
Keywords
polypyrrole, supercapacitors, self-discharge
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-300917 (URN)978-91-554-9651-7 (ISBN)
External cooperation:
Public defence
2016-09-30, Å80121, Ångströmlaboratoriet, Lägerhyddsvägen 1, Uppsala, 13:15 (English)
Opponent
Supervisors
Available from: 2016-09-09 Created: 2016-08-16 Last updated: 2016-09-13
Wang, Z., Tammela, P., Huo, J., Zhang, P., Strömme, M. & Nyholm, L. (2016). Solution-processed poly(3,4-ethylenedioxythiophene) nanocomposite paper electrodes for high-capacitance flexible supercapacitors. Journal of Materials Chemistry A, 4(5), 1714-1722
Open this publication in new window or tab >>Solution-processed poly(3,4-ethylenedioxythiophene) nanocomposite paper electrodes for high-capacitance flexible supercapacitors
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2016 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 4, no 5, p. 1714-1722Article in journal (Refereed) Published
Abstract [en]

Although the development of nanostructured poly(3,4-ethylenedioxythiophene) (PEDOT) with large capacitance and high mechanical flexibility is crucial for the realization of high-performance supercapacitors, such electrodes are generally very challenging to manufacture rapidly and inexpensively. Herein, a straightforward, fast and versatile approach for the fabrication of mechanically robust, highly conductive and flexible nanostructured PEDOT paper is described. The composite material, which can be made within 30 minutes using solution based reactions, exhibits a large surface area (137 m2 g-1) and low sheet resistance (1.4 [capital Omega] [square]-1) as well as high active mass loading (7.3 mg cm-2). Symmetric PEDOT paper-based supercapacitors are shown to provide high specific electrode capacitances (i.e. 90 F g-1, 920 mF cm-2, and 54 F cm-3) and excellent cycling stability (93% capacity retention after 15 000 cycles at 30 mA cm-2) in 1.0 M H2SO4. The electrochemical performance of the supercapacitors was also maintained at different bending angles demonstrating the flexibility of the devices. Given the widespread interest in PEDOT and its broad applicability, the present straightforward procedure for the fabrication of nanostructured PEDOT holds great promise for the realization of different flexible energy storage devices.

National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-272208 (URN)10.1039/C5TA10122K (DOI)000368839200022 ()
Funder
Swedish Foundation for Strategic Research , RMA-110012Swedish Energy AgencyCarl Tryggers foundation
Available from: 2016-01-12 Created: 2016-01-12 Last updated: 2017-11-30Bibliographically approved
Tammela, P., Wang, Z., Frykstrand, S., Zhang, P., Sintorn, I.-M., Nyholm, L. & Strömme, M. (2015). Asymmetric supercapacitors based on carbon nanofibre and polypyrrole/nanocellulose composite electrodes. RSC Advances, 5(21), 16405-16413
Open this publication in new window or tab >>Asymmetric supercapacitors based on carbon nanofibre and polypyrrole/nanocellulose composite electrodes
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2015 (English)In: RSC Advances, ISSN 2046-2069, E-ISSN 2046-2069, Vol. 5, no 21, p. 16405-16413Article in journal (Refereed) Published
Abstract [en]

Asymmetric, all-organic supercapacitors (containing an aqueous electrolyte), exhibiting a capacitance of 25 F g-1 (or 2.3 F cm-2) at a current density of 20 mA cm-2 and a maximum cell voltage of 1.6 V, are presented. The devices contain a composite consisting of polypyrrole covered Cladophora cellulose fibres (PPy-cellulose) as the positive electrode while a carbon nanofibre material, obtained by heat treatment of the same PPy-cellulose composite under nitrogen gas flow, serves as the negative electrode. Scanning and transmission electron microscopy combined with X-ray photoelectron spectroscopy data show that the heat treatment gives rise to a porous carbon nanofibre material, topologically almost identical to the original PPy-cellulose composite. The specific gravimetric capacitances of the carbon and the PPy-cellulose electrodes were found to be 59 and 146 F g-1, respectively, while the asymmetric supercapacitors exhibited a gravimetric energy density of 33 J g-1. The latter value is about two times higher than the energy densities obtainable for a symmetric PPy-cellulose device as a result of the larger cell voltage range accessible. The capacitance obtained for the asymmetric devices at a current density of 156 mA cm-2 was 11 F g-1 and cycling stability results further indicate that the capacity loss was about 23% during 1000 cycles employing a current density of 20 mA cm-2. The present results represent a significant step forward towards the realization of all-organic material based supercapacitors with aqueous electrolytes and commercially viable capacitances and energy densities.

National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials; Computerized Image Processing
Identifiers
urn:nbn:se:uu:diva-243564 (URN)10.1039/C4RA15894F (DOI)000349524700075 ()
Available from: 2015-01-26 Created: 2015-02-10 Last updated: 2017-12-04Bibliographically approved
Kizling, M., Draminska, S., Stolarczyk, K., Tammela, P., Wang, Z., Nyholm, L. & Bilewicz, R. (2015). Biosupercapacitors for powering oxygen sensing devices. Bioelectrochemistry, 106, 34-40
Open this publication in new window or tab >>Biosupercapacitors for powering oxygen sensing devices
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2015 (English)In: Bioelectrochemistry, ISSN 1567-5394, E-ISSN 1878-562X, Vol. 106, p. 34-40Article in journal (Refereed) Published
Abstract [en]

A biofuel cell comprising electrodes based on supercapacitive materials - carbon nanotubes and nanocellulose/polypyrrole composite was utilized to power an oxygen biosensor. Laccase Trametes versicolor, immobilized on naphthylated multi walled carbon nanotubes, and fructose dehydrogenase, adsorbed on a porous polypyrrole matrix, were used as the cathode and anode bioelectrocatalysts, respectively. The nanomaterials employed as the supports for the enzymes increased the surface area of the electrodes and provide direct contact with the active sites of the enzymes. The anode modified with the conducting polymer layer exhibited significant pseudocapacitive properties providing superior performance also in the high energy mode, e.g., when switching on/off the powered device. Three air-fructose biofuel cells connected in a series converted chemical energy into electrical giving 2 mW power and open circuit potential of 2 V. The biofuel cell system was tested under various externally applied resistances and used as a powering unit for a laboratory designed two-electrode minipotentiostat and a laccase based sensor for oxygen sensing. Best results in terms of long time measurement of oxygen levels were obtained in the pulse mode -45 s for measurement and 15 min for self-recharging of the powering unit.

Keywords
Supercapacitor, Biofuel cell, Laccase, Fructose dehydrogenase, Polypyrrole, Nanocellulose, Oxygen biosensor
National Category
Materials Chemistry Inorganic Chemistry Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-265791 (URN)10.1016/j.bioelechem.2015.04.012 (DOI)000362603500006 ()25960258 (PubMedID)
Funder
EU, FP7, Seventh Framework Programme, 607793
Available from: 2015-11-03 Created: 2015-11-03 Last updated: 2017-12-01Bibliographically approved
Wang, Z., Tammela, P., Strömme, M. & Nyholm, L. (2015). Conducting Polymer Paper-Based Cathode for Lithium Ion Batteries . In: Swedish Chemical Society (Ed.), Inorganic days Proceeding 2015: . Paper presented at Inorganic days 2015, Swedish Chemical Society, Visby, June 15-17 2015.
Open this publication in new window or tab >>Conducting Polymer Paper-Based Cathode for Lithium Ion Batteries
2015 (English)In: Inorganic days Proceeding 2015 / [ed] Swedish Chemical Society, 2015Conference paper, Oral presentation with published abstract (Refereed)
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-268491 (URN)
Conference
Inorganic days 2015, Swedish Chemical Society, Visby, June 15-17 2015
Available from: 2015-12-06 Created: 2015-12-06 Last updated: 2016-11-30
Wang, Z., Xu, C., Tammela, P., Zhang, P., Edström, K., Gustafsson, T., . . . Nyholm, L. (2015). Conducting Polymer Paper-Based Cathodes for High-Areal-Capacity Lithium–Organic Batteries. Energy Technology, 3(6), 563-569
Open this publication in new window or tab >>Conducting Polymer Paper-Based Cathodes for High-Areal-Capacity Lithium–Organic Batteries
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2015 (English)In: Energy Technology, ISSN 2194-4296, Vol. 3, no 6, p. 563-569Article in journal (Refereed) Published
Abstract [en]

Conducting polymers have been considered for use as cathode materials in rechargeable lithium-ion batteries (LIBs) since 1981 but problems with poor cycling stability, rapid self-discharge, and low energy and power densities have so far limited their applicability. Herein it is shown that nanostructured freestanding conducting polymer composites [e.g., polypyrrole (PPy) and polyaniline (PANI)] can be used to circumvent these shortcomings. Freestanding and binder-free PPy and cellulose-based composites can straightforwardly be used as versatile organic cathode materials for LIBs. The composite, reinforced with chopped carbon filaments (CCFs), exhibited a large active mass loading of approximately 10mgcm(-2), an areal capacity of 1.0mAhcm(-2) (corresponding to 102mAhg(-1)), and stable cycling. With an active mass loading of 4.4mgcm(-2), a capacity of 0.22mAhcm(-2) (corresponding to 58mAhg(-1)) was found for current densities of 5Ag(-1) yielding discharge times of approximately 40seconds, and a capacity retention of 91% over 100cycles was obtained at 0.2Ag(-1). The present method constitutes a straightforward approach for the manufacturing of high-performance freestanding electroactive conducting-polymer-based paper-like electrodes for use in inexpensive and sustainable, high-performance organic LIBs.

Keywords
conducting polymers, lithium-ion batteries, paper, polyaniline, polypyrrole
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-254607 (URN)10.1002/ente.201402224 (DOI)000356082700003 ()
Funder
Carl Tryggers foundation
Available from: 2015-06-09 Created: 2015-06-09 Last updated: 2017-12-30
Wang, Z., Xu, C., Tammela, P., Zhang, P., Edström, K., Gustafsson, T., . . . Nyholm, L. (2015). Conducting Polymer Paper-Based Cathodes for High-Areal-Capacity Lithium-Organic Batteries. Energy Technology, 3, 563-9
Open this publication in new window or tab >>Conducting Polymer Paper-Based Cathodes for High-Areal-Capacity Lithium-Organic Batteries
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2015 (English)In: Energy Technology, ISSN 2194-4288, Vol. 3, p. 563-9Article in journal (Refereed) Published
Abstract [en]

Conducting polymers have been considered for use as cathode materials in rechargeable lithium-ion batteries (LIBs) since 1981 but problems with poor cycling stability, rapid self-discharge, and low energy and power densities have so far limited their applicability. Herein it is shown that nanostructured freestanding conducting polymer composites [e.g., polypyrrole (PPy) and polyaniline (PANI)] can be used to circumvent these shortcomings. Freestanding and binder-free PPy and cellulose-based composites can straightforwardly be used as versatile organic cathode materials for LIBs. The composite, reinforced with chopped carbon filaments (CCFs), exhibited a large active mass loading of approximately 10 mg cm -2, an areal capacity of 1.0 mAh cm -2 (corresponding to 102 mAh g -1), and stable cycling. With an active mass loading of 4.4 mg cm -2, a capacity of 0.22 mAh cm -2 (corresponding to 58 mAh g -1) was found for current densities of 5 A g -1 yielding discharge times of approximately 40 seconds, and a capacity retention of 91 % over 100 cycles was obtained at 0.2 A g -1. The present method constitutes a straightforward approach for the manufacturing of high-performance freestanding electroactive conducting-polymer-based paper-like electrodes for use in inexpensive and sustainable, high-performance organic LIBs.

National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-271365 (URN)
Available from: 2016-01-07 Created: 2016-01-07 Last updated: 2017-12-30
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