Change search
Link to record
Permanent link

Direct link
BETA
Alternative names
Publications (10 of 49) Show all publications
Mussa, A., Liivat, A., Marzano, F., Klett, M., Philippe, B., Tengstedt, C., . . . Svens, P. (2019). Fast-charging effects on ageing for energy-optimized automotive LiNi1/3Mn1/3Co1/3O2/graphite prismatic lithium-ion cells. Journal of Power Sources, 422, 175-184
Open this publication in new window or tab >>Fast-charging effects on ageing for energy-optimized automotive LiNi1/3Mn1/3Co1/3O2/graphite prismatic lithium-ion cells
Show others...
2019 (English)In: Journal of Power Sources, ISSN 0378-7753, E-ISSN 1873-2755, Vol. 422, p. 175-184Article in journal (Refereed) Published
Abstract [en]

The reactions in energy-optimized 25 Ah prismatic NMC/graphite lithium-ion cell, as a function of fast charging (1C-4C), are more complex than earlier described. There are no clear charging rate dependent trends but rather different mechanisms dominating at the different charging rates. Ageing processes are faster at 3 and 4C charging. Cycling with 3C-charging results in accelerated lithium plating but the 4C-charging results in extensive gas evolution that contribute significantly to the large cell impedance rise. Graphite exfoliation and accelerated lithium inventory loss point to the graphite electrode as the source of the gas evolution. The results are based on careful post-mortem analyses of electrodes using: scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and electrochemical impedance spectroscopy (EIS). SEM results show particle cracking independent of the charging rate used for the cycling. XPS and EIS generally indicate thicker surface film and larger impedance, respectively, towards the edge of the jellyrolls. For the intended application of a battery electric inner-city bus using this type of cell, charging rates of 3C and above are not feasible, considering battery lifetime. However, charging rates of 2C and below are too slow from the point of view of practical charging time.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV, 2019
Keywords
Fast charging, Lithium-ion battery, Ageing, Energy battery, Electric vehicle
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-252373 (URN)10.1016/j.jpowsour.2019.02.095 (DOI)000465365900021 ()2-s2.0-85063095386 (Scopus ID)
Note

QC 20190610

Available from: 2019-06-10 Created: 2019-06-10 Last updated: 2019-06-10Bibliographically approved
Mussa, A., Lindbergh, G., Klett, M., Gudmundson, P., Svens, P. & Lindström, R. (2018). Inhomogeneous active layer contact loss in a cycled prismatic lithium-ion cell caused by the jelly-roll curvature. Journal of Energy Storage, 20, 213-217
Open this publication in new window or tab >>Inhomogeneous active layer contact loss in a cycled prismatic lithium-ion cell caused by the jelly-roll curvature
Show others...
2018 (English)In: Journal of Energy Storage, E-ISSN 2352-152X, Vol. 20, p. 213-217Article in journal (Refereed) Published
Abstract [en]

Internal resistance is a key parameter that affects the power, energy, efficiency, lifetime, and safety of a lithium-ion battery. It grows due to chemical and mechanical battery wear during ageing. In this work, the effect of the jelly-roll winding curvature on impedance rise is investigated. NMC electrode samples, harvested from the curved as well as the flat regions of the jelly-roll from cycle-aged and calendar-aged prismatic cells (25 Ah, hard casing) are investigated by electrochemical impedance spectroscopy. After cycling, larger impedance rise is observed at the outer radius (concave) of the curved region compared to the inner radius (convex) or the flat region of the jelly-roll, and the difference increases with a decrease in the jelly-roll radius of curvature, from the cell skin towards the core. To identify the causes behind the observed difference in the impedance rise, investigations at different external compression (0 and 2.5 MPa) and temperature (5 and 25 °C) are performed. The results show that contact loss between the current collector and the active layer is the main source of the difference in impedance rise. Mechanical mechanisms that may cause the contact loss are discussed and design recommendations to mitigate the rise in impedance are given. 

Place, publisher, year, edition, pages
Elsevier Ltd, 2018
Keywords
Bending stress, Contact loss, Curvature, Diffusion induced stress (DIS), Lithium-ion battery, Mechanical ageing, Electrochemical impedance spectroscopy, Ions, Stresses, Diffusion induced stresses (DIS), Lithium-ion batteries
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-236555 (URN)10.1016/j.est.2018.09.012 (DOI)000451147100021 ()2-s2.0-85054131101 (Scopus ID)
Funder
Swedish Energy Agency, 30770-3
Note

Funding text: This work was supported by the Swedish Energy Agency ( 30770-3 ) under the program Energy Efficient Vehicles, the StandUp for Energy, the Battery Fund Program, and Swedish Electromobility Centre. Dr. Fernanda Marzano (Scania CV AB) is acknowledged for helping with the cell opening. Appendix A. QC 20181127

Available from: 2018-11-27 Created: 2018-11-27 Last updated: 2018-12-11Bibliographically approved
Fatima, M., Farooq, R., Lindström, R. & Saeed, M. (2017). A review on biocatalytic decomposition of azo dyes and electrons recovery. Journal of Molecular Liquids, 246, 275-281
Open this publication in new window or tab >>A review on biocatalytic decomposition of azo dyes and electrons recovery
2017 (English)In: Journal of Molecular Liquids, ISSN 0167-7322, E-ISSN 1873-3166, Vol. 246, p. 275-281Article in journal (Refereed) Published
Abstract [en]

Discharge of waste water from textile industry during coloring processes contains high concentrations of biologically difficult-to-degrade dye chemicals along with antifouling agents. Azo dyes considered to be the largest class of synthetic dyes used in the textile industries and are present in significant amounts in its effluents. These are highly stable because of its complex aromatic structure and covalent azo bonds. Traditional physico-chemical methods are not considered sufficient because of their high cost, partial degradation and more sludge production. The use of biocatalysts for decolorization is a gaining momentum due to having redox-active molecules. Current review explored techniques for the decomposition of textile dyes, their merits, limitations and recommended the emerging microbial fuel cell technology followed by aerobic treatment for complete degradation of dye intermediate metabolites.

Place, publisher, year, edition, pages
Elsevier B.V., 2017
Keywords
Azo dye, Biocatalysis, Microbial fuel cell, Physicochemical methods, Textile industry, Agents, Azo dyes, Biocatalysts, Degradation, Dyes, Effluents, Fuel cells, Microbial fuel cells, Redox reactions, Textiles, Antifouling agents, Complex aromatic structures, Fuel cell technologies, Partial degradation, Redox active molecules, Sludge production
National Category
Water Treatment
Identifiers
urn:nbn:se:kth:diva-218646 (URN)10.1016/j.molliq.2017.09.063 (DOI)000415771100035 ()2-s2.0-85029864322 (Scopus ID)
Note

QC 20171129

Available from: 2017-11-29 Created: 2017-11-29 Last updated: 2017-12-18Bibliographically approved
Rashtchi, H., Raeissi, K., Shamanian, M., Acevedo Gomez, Y., Lagergren, C., Lindström, R. & Rajaei, V. (2016). Evaluation of Ni-Mo and Ni-Mo-P Electroplated Coatings on Stainless Steel for PEM Fuel Cells Bipolar Plates. Fuel Cells, 16(6), 784-800
Open this publication in new window or tab >>Evaluation of Ni-Mo and Ni-Mo-P Electroplated Coatings on Stainless Steel for PEM Fuel Cells Bipolar Plates
Show others...
2016 (English)In: Fuel Cells, ISSN 1615-6846, E-ISSN 1615-6854, Vol. 16, no 6, p. 784-800Article in journal (Refereed) Published
Abstract [en]

Stainless steel bipolar plates (BPPs) are the preferred choice for proton exchange membrane fuel cells (PEMFCs); however, a surface coating is needed to minimize contact resistance and corrosion. In this paper, Ni–Mo and Ni–Mo–P coatings were electroplated on stainless steel BPPs and investigated by XRD, SEM/EDX, AFM and contact angle measurements. The performance of the BPPs was studied by corrosion and conduction tests and by measuring their interfacial contact resistances (ICRs) ex situ in a PEMFC set-up at varying clamping pressure, applied current and temperature. The results revealed that the applied coatings significantly reduce the ICR and corrosion rate of stainless steel BPP. All the coatings presented stable performance and the coatings electroplated at 100 mA cm−2showed even lower ICR than graphite. The excellent properties of the coatings compared to native oxide film of the bare stainless steel are due to their higher contact angle, crystallinity and roughness, improving hydrophobicity and electrical conductivity. Hence, the electroplated coatings investigated in this study have promising properties for stainless steel BPPs and are potentially good alternatives for the graphite BPP in PEMFC.

Place, publisher, year, edition, pages
John Wiley & Sons, 2016
Keywords
Alloys, Bipolar Plate, Electroplated Coatings, Fuel Cells, Interfacial Contact Resistance, Molybdenum, PEM Fuel Cell, Wettability, Alloying, Coatings, Contact angle, Contact resistance, Corrosion, Corrosion rate, Gas fuel purification, Graphite, Nickel, Oxide films, Proton exchange membrane fuel cells (PEMFC), Wetting, Bipolar plates, Electrical conductivity, Electroplated coating, Proton exchange membrane fuel cell (PEMFCs), Stable performance, Stainless steel bipolar plates, Stainless steel
National Category
Materials Engineering
Identifiers
urn:nbn:se:kth:diva-201882 (URN)10.1002/fuce.201600062 (DOI)000392531900014 ()2-s2.0-84992349867 (Scopus ID)
Funder
StandUp
Note

QC 20170308

Available from: 2017-03-08 Created: 2017-03-08 Last updated: 2019-01-29Bibliographically approved
Eriksson, B., Jaouen, F., Lindbergh, G., Wreland Lindström, R. & Lagergren, C. (2015). Degradation and lifetime evaluation of Fe-N-C based catalyst in PEMFC. In: Proceedings of the 6th European Fuel Cell - Piero Lunghi Conference, EFC 2015: . Paper presented at 6th European Fuel Cell Technology and Applications Conference - Piero Lunghi Conference, EFC 2015, 16 December 2015 through 18 December 2015 (pp. 223-224). ENEA
Open this publication in new window or tab >>Degradation and lifetime evaluation of Fe-N-C based catalyst in PEMFC
Show others...
2015 (English)In: Proceedings of the 6th European Fuel Cell - Piero Lunghi Conference, EFC 2015, ENEA , 2015, p. 223-224Conference paper, Published paper (Refereed)
Abstract [en]

The restricted lifetime of Fe-N-C based catalysts is often assumed to be connected to the operating temperature. This study will investigate how the cell performance, electrode structure and composition vary over time, at different cell temperatures. At lower temperature, one may expect an increase in radical's stability, but a decrease in reactivity. Results show that the electrode degenerates over time, and that the electrochemical performance decay is similar for 40, 60, and 80° C. However, the loss of active sites is higher at higher temperature. This suggests that indirect production of radicals via H2O2 production during ORR is higher at higher temperatures and is a key degradation mechanism for this Fe-N-C catalyst.

Place, publisher, year, edition, pages
ENEA, 2015
Keywords
Degradation, NPMC, Proton exchange membrane fuel cell (PEMFC), Catalysts, Electrochemical electrodes, Electrodes, Cell temperature, Degradation mechanism, Electrochemical performance, Electrode structure, Lifetime evaluation, Lower temperatures, Operating temperature, Proton exchange membrane fuel cells (PEMFC)
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-202902 (URN)2-s2.0-84994570920 (Scopus ID)9788882863241 (ISBN)
Conference
6th European Fuel Cell Technology and Applications Conference - Piero Lunghi Conference, EFC 2015, 16 December 2015 through 18 December 2015
Note

QC 20170307

Available from: 2017-03-07 Created: 2017-03-07 Last updated: 2017-03-07Bibliographically approved
Carlson, A., Shapturenka, P., Lindbergh, G., Lagergren, C. & Wreland Lindström, R. (2015). Porous electrode optimization in anion-exchange membrane fuel cells. In: Proceedings of the 6th European Fuel Cell - Piero Lunghi Conference, EFC 2015: . Paper presented at 6th European Fuel Cell Technology and Applications Conference - Piero Lunghi Conference, EFC 2015, 16 December 2015 through 18 December 2015 (pp. 221-222). ENEA
Open this publication in new window or tab >>Porous electrode optimization in anion-exchange membrane fuel cells
Show others...
2015 (English)In: Proceedings of the 6th European Fuel Cell - Piero Lunghi Conference, EFC 2015, ENEA , 2015, p. 221-222Conference paper, Published paper (Refereed)
Abstract [en]

The performance of anion-exchange membrane fuel cells is highly dependent on electrode preparation. This study has investigated the influence of water content and catalyst to ionomer ratio in the electrode ink on in-situ fuel cell performance and the electrode microstructure using SEM. It has shown that changing the solvent composition affects the electrode properties. Higher water content in ink results in a lower power density. An increase in water content from 40 to 70 vol% shows a 500 mA/cm2 drop in current density. SEM analysis of newly prepared electrodes revealed an observable difference in the microstructure. This indicates that for high water volume the ionomer distribution in the electrode is very uneven. The results also indicate that lower ionomer content in the bulk of the structure lowers the cell performance, which may be explained by limited hydroxide transportation.

Place, publisher, year, edition, pages
ENEA, 2015
Keywords
Anion exchange membranes (AEM), Electrode composition, Electrode ink, Polymer electrolyte fuel cells (PEFC), Alkaline fuel cells, Electrodes, Electrolytes, Fuel cells, Gas fuel purification, Ion exchange membranes, Ionomers, Ions, Microstructure, Polyelectrolytes, Anion-exchange membrane fuel cells, Electrode microstructures, Electrode preparation, Fuel cell performance, Increase in water content, Polymer electrolyte fuel cells, Proton exchange membrane fuel cells (PEMFC)
National Category
Chemical Sciences
Identifiers
urn:nbn:se:kth:diva-202903 (URN)2-s2.0-84994589068 (Scopus ID)9788882863241 (ISBN)
Conference
6th European Fuel Cell Technology and Applications Conference - Piero Lunghi Conference, EFC 2015, 16 December 2015 through 18 December 2015
Note

QC 20170307

Available from: 2017-03-07 Created: 2017-03-07 Last updated: 2017-03-07Bibliographically approved
Esmaily, M., Blücher, D. B., Wreland Lindström, R., Svensson, J.-E. -. & Johansson, L. G. (2015). The influence of SO2 on the corrosion of Mg and Mg-Al alloys. Journal of the Electrochemical Society, 162(6), C260-C269
Open this publication in new window or tab >>The influence of SO2 on the corrosion of Mg and Mg-Al alloys
Show others...
2015 (English)In: Journal of the Electrochemical Society, ISSN 0013-4651, E-ISSN 1945-7111, Vol. 162, no 6, p. C260-C269Article in journal (Refereed) Published
Abstract [en]

The SO2-induced atmospheric corrosion of some magnesium-aluminum (Mg-Al) alloys, including Mg alloy AZ91D, and commercially pure Mg (CP Mg) was investigated using well-controlled laboratory exposures and included real-time measurements of SO2 deposition. The influence of SO2 concentration, alloy composition, humidity, and ppb level additions of O-3 or NO2 on the rate of SO2 deposition was investigated. SO2 accelerates the corrosion of Mg and Mg alloys causing localized corrosion, MgSO(3)6H(2)O being the dominant corrosion product. At 60% RH, traces of O-3 or NO2 strongly increased both the SO2 deposition and the corrosion rate. The rate of SO2 deposition was strongly dependent on humidity; at 70% RH and higher the SO2 deposition rate was very rapid and constant in time while it was transient below 50% RH. At 60% RH, a change from transient to rapid, steady-state, SO2 deposition occurred. The sudden activation is explained by the onset of electrochemical corrosion. The activation behavior was shown to depend on SO2 concentration, the thickness of the surface film and by the presence of ambient O-2. (C) The Author(s) 2015. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.

Keywords
Alloys, Aluminum, Aluminum coatings, Atmospheric corrosion, Atmospheric humidity, Chemical activation, Corrosion, Corrosion rate, Deposition, Electrochemical corrosion, Activation behavior, Alloy compositions, Controlled laboratories, Corrosion products, Localized corrosion, Mg-Al alloys, Real time measurements, Surface films
National Category
Other Chemistry Topics
Identifiers
urn:nbn:se:kth:diva-167008 (URN)10.1149/2.0801506jes (DOI)000353009300055 ()2-s2.0-84928313963 (Scopus ID)
Funder
Swedish Foundation for Strategic Research
Note

QC 20150522

Available from: 2015-05-22 Created: 2015-05-21 Last updated: 2017-12-04Bibliographically approved
Klett, M., Svens, P., Tengstedt, C., Seyeux, A., Swiatowska, J., Lindbergh, G. & Wreland Lindström, R. (2015). Uneven Film Formation across Depth of Porous Graphite Electrodes in Cycled Commercial Li-Ion Batteries. The Journal of Physical Chemistry C, 119(1), 90-100
Open this publication in new window or tab >>Uneven Film Formation across Depth of Porous Graphite Electrodes in Cycled Commercial Li-Ion Batteries
Show others...
2015 (English)In: The Journal of Physical Chemistry C, ISSN 1932-7447, E-ISSN 1932-7455, Vol. 119, no 1, p. 90-100Article in journal (Refereed) Published
Abstract [en]

A critical aging mechanism in lithium-ion batteries is the decomposition of the electrolyte at the negative electrode forming a solid electrolyte interphase (SEI) layer that increases impedance and consumes cyclable lithium. In contrast to the typical nanometer SEI layer generally discussed, this paper reports on the formation of a micrometer thick film on top of and within the upper part of a porous graphite electrode in a deep-cycled commercial cylindrical LiFePO4/graphite cell. Morphological, chemical, and electrochemical characterizations were performed by means of cross-sectional electron microscopy in combination with energy dispersive X-ray spectroscopy and focused ion-beam milling, time-of-flight secondary ion mass spectrometry, and electrochemical impedance spectroscopy (EIS) to evaluate the properties and impact of the uneven film. It is shown that the film is enriched in PO and carbonate species but is otherwise similar in composition to the thin SEI formed on a calendar-aged electrode and clogs the pores in the electrode closest to the separator. Performance evaluation by physics-based EIS modeling supports a local porosity decrease, impeding the effective electrolyte transport in the electrode. The local variation of electrode properties implies that current distribution in the porous electrode under these cycling conditions causes inefficient material utilization and sustained uneven electrode degradation.

Keywords
Capacity Fade, Impedance Spectroscopy, Postmortem Analysis, Thin-Film, Tof-Sims, Electrochemical Characterization, Photoelectron-Spectroscopy, Lithium Intercalation, Mass-Spectrometry, Aging Mechanisms
National Category
Other Chemistry Topics
Identifiers
urn:nbn:se:kth:diva-160750 (URN)10.1021/jp509665e (DOI)000347744700012 ()2-s2.0-84920651710 (Scopus ID)
Funder
Swedish Energy Agency
Note

QC 20150302

Available from: 2015-03-02 Created: 2015-02-27 Last updated: 2017-12-04Bibliographically approved
Klett, M., Zavalis, T., Hellqvist Kjell, M., Wreland Lindström, R., Behm, M. & Lindbergh, G. (2014). Altered electrode degradation with temperature in LiFePO4/mesocarbon microbead graphite cells diagnosed with impedance spectroscopy. Electrochimica Acta, 141, 173-181
Open this publication in new window or tab >>Altered electrode degradation with temperature in LiFePO4/mesocarbon microbead graphite cells diagnosed with impedance spectroscopy
Show others...
2014 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 141, p. 173-181Article in journal (Other academic) Published
Abstract [en]

Electrode degradation in LiFePO4 / mesocarbon microbead graphite (MCMB) pouch cells aged at 55 °C by a synthetic hybrid drive cycle or storage is diagnosed and put into context with previous results of aging at 22 °C. The electrode degradation is evaluated by means of electrochemical impedance spectroscopy (EIS), measured separately on electrodes harvested from the cells, and by using a physics-based impedance model for aging evaluation. Additional capacity measurements, scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX) are used in the evaluation. At 55 °C the LiFePO4 electrode shows increased particle/electronic conductor resistance, for both stored and cycled electrodes. This differs from results obtained at 22 °C, where the electrode suffered lowered porosity, particle fracture, and loss of active material. For graphite, only cycling gave a sustained effect on electrode performance at 55 °C due to lowered porosity and changes of surface properties, and to greater extent than at low temperature. Furthermore, increased current collector resistance also contributes to a large part of the pouch cell impedance when aged at increased temperatures. The result shows that increased temperature promotes different degradation on the electrode level, and is an important implication for high temperature accelerated aging. In light of the electrode observations, the correlation between full-cell and electrode impedances is discussed.

Keywords
battery aging;temperature;electrode impedance;EIS modeling;LiFePO4/MCMB graphite
National Category
Chemical Engineering
Identifiers
urn:nbn:se:kth:diva-145053 (URN)10.1016/j.electacta.2014.06.081 (DOI)000343022900023 ()2-s2.0-84905868311 (Scopus ID)
Funder
Swedish Energy Agency
Note

Updated from "Manuscript" to "Journal". QC 20141112

Available from: 2014-05-07 Created: 2014-05-07 Last updated: 2017-12-05Bibliographically approved
Oyarce, A., Gonzalez, C., Lima, R. B., Wreland Lindström, R., Lagergren, C. & Lindbergh, G. (2014). Direct sorbitol proton exchange membrane fuel cell using moderate catalyst loadings. Electrochimica Acta, 116, 379-387
Open this publication in new window or tab >>Direct sorbitol proton exchange membrane fuel cell using moderate catalyst loadings
Show others...
2014 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 116, p. 379-387Article in journal (Refereed) Published
Abstract [en]

Recent progress in biomass hydrolysis has made it interesting to study the use of sorbitol for electricity generation. In this study, sorbitol and glucose are used as fuels in proton exchange membrane fuel cells having 0.9 mg cm(-2) PtRu/C at the anode and 0.3 mg cm(-2) Pt/C at the cathode. The sorbitol oxidation was found to have slower kinetics than glucose oxidation. However, at low temperatures the direct sorbitol fuel cell shows higher performance than the direct glucose fuel cell, attributed to a lower degree of catalyst poisoning. The performance of both fuel cells is considerably improved at higher temperatures. High temperatures lower the poisoning, allowing the direct glucose fuel cell to reach a higher performance than the direct sorbitol fuel cell. The mass specific peak power densities of the direct sorbitol and direct glucose fuel cells at 65 degrees C was 3.2 mW Mg-catalyst(-1) and 3.5 mW Mg-catalyst(-1), respectively. Both of these values are one order of magnitude larger than mass specific peak power densities of earlier reported direct glucose fuel cells using proton exchange membranes. Furthermore, both the fuel cells showed a considerably decrease in performance with time, which is partially attributed to sorbitol and glucose crossover poisoning the Pt/C cathode.

Keywords
Direct sorbitol fuel cell, Direct glucose fuel cell, Proton exchange membrane, Supported PtRu catalyst, Performance
National Category
Other Chemistry Topics
Identifiers
urn:nbn:se:kth:diva-143457 (URN)10.1016/j.electacta.2013.11.070 (DOI)000331494400052 ()2-s2.0-84889997436 (Scopus ID)
Funder
Mistra - The Swedish Foundation for Strategic Environmental ResearchSwedish Research Council
Note

QC 20140325

Available from: 2014-03-25 Created: 2014-03-21 Last updated: 2017-12-05Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-0452-0703

Search in DiVA

Show all publications