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Publications (10 of 234) Show all publications
Colbin, L. O., Hall, C. A., Etman, A. S., Buckel, A., Nyholm, L. & Younesi, R. (2024). Anodic dissolution of aluminum in non-aqueous electrolyte solutions for sodium-ion batteries. Energy Advances, 3(1), 143-148
Open this publication in new window or tab >>Anodic dissolution of aluminum in non-aqueous electrolyte solutions for sodium-ion batteries
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2024 (English)In: Energy Advances, E-ISSN 2753-1457, Vol. 3, no 1, p. 143-148Article in journal (Refereed) Published
Abstract [en]

Anodic dissolution of aluminum (commonly called aluminum corrosion) is a potential issue in sodium-ion batteries. Herein, it is demonstrated how different sodium-ion battery electrolyte solutions affect this phenomenon. The type of electrolyte was critical for the presence of anodic dissolution, while the solvent appeared to alter the dissolution process.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2024
National Category
Materials Chemistry Inorganic Chemistry
Identifiers
urn:nbn:se:uu:diva-522460 (URN)10.1039/d3ya00233k (DOI)001109995200001 ()
Funder
Swedish Energy Agency, 50177-1Vinnova, 2022-01465Vinnova, 2019-00064EU, Horizon 2020, 958174EU, Horizon 2020, 963542
Available from: 2024-02-06 Created: 2024-02-06 Last updated: 2024-02-06Bibliographically approved
Iurchenkova, A. A., Tammela, P., Wang, Z., Strömme, M., Nyholm, L. & Lindh, J. (2024). CO2-laser carbonization of polypyrrole/nanocellulose free-standing film for energy storage applications. In: RSC (Ed.), RCS Poster Conference 2024: . Paper presented at RCS Poster Conference 2024. 5-6th March 2024 online.. don: Royal Society of Chemistry
Open this publication in new window or tab >>CO2-laser carbonization of polypyrrole/nanocellulose free-standing film for energy storage applications
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2024 (English)In: RCS Poster Conference 2024 / [ed] RSC, don: Royal Society of Chemistry, 2024Conference paper, Poster (with or without abstract) (Refereed)
Place, publisher, year, edition, pages
don: Royal Society of Chemistry, 2024
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials; Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-524623 (URN)
Conference
RCS Poster Conference 2024. 5-6th March 2024 online.
Available from: 2024-03-08 Created: 2024-03-08 Last updated: 2024-03-08
Tammela, P., Iurchenkova, A. A., Wang, Z., Strömme, M., Nyholm, L. & Lindh, J. (2024). Laser irradiation of photothermal precursors – a novel approach to produce carbon materials for supercapacitors. ChemSusChem, 1-11, Article ID e20230.
Open this publication in new window or tab >>Laser irradiation of photothermal precursors – a novel approach to produce carbon materials for supercapacitors
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2024 (English)In: ChemSusChem, ISSN 1864-5631, E-ISSN 1864-564X, p. 1-11, article id e20230Article in journal (Refereed) Published
Abstract [en]

A wide array of carbon materials finds extensive utility across various industrial applications today. Nonetheless, the production processes for these materials continue to entail elevated temperatures, necessitate the use of inert atmospheres, and often involve the handling of aggressive and toxic chemicals. The prevalent method for large-scale carbon material production, namely the pyrolysis of waste biomass and polymers, typically unfolds within the temperature range of 500–700 °C under a nitrogen (N2) atmosphere. Unfortunately, this approach suffers from significant energy inefficiency due to substantial heat loss over extended processing durations. In this work, we propose an interesting alternative: the carbonization of photothermal nanocellulose/polypyrrole composite films through CO2 laser irradiation in the presence of air. This innovative technique offers a swift and energy-efficient means of preparing carbon materials. The unique interaction between nanocellulose and polypyrrole imparts the film with sufficient stability to retain its structural integrity post-carbonization. This breakthrough opens up new avenues for producing binder-free electrodes using a rapid and straightforward approach. Furthermore, the irradiated film demonstrates specific and areal capacitances of 159 F g−1 and 62 μF cm−2, respectively, when immersed in a 2 M NaOH electrolyte. These values significantly surpass those achieved by current commercial activated carbons. Together, these attributes render CO2-laser carbonization an environmentally sustainable and ecologically friendly method for carbon material production.

Place, publisher, year, edition, pages
Society Publishing, 2024
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-524624 (URN)10.1002/cssc.202301471 (DOI)
Funder
Swedish Energy Agency
Available from: 2024-03-08 Created: 2024-03-08 Last updated: 2024-03-08
Huang, Y.-K., Chen, H. & Nyholm, L. (2023). Influence of Lithium Diffusion into Copper Current Collectors on Lithium Electrodeposition in Anode‐Free Lithium‐Metal Batteries. Small, 19(43), Article ID 2306829.
Open this publication in new window or tab >>Influence of Lithium Diffusion into Copper Current Collectors on Lithium Electrodeposition in Anode‐Free Lithium‐Metal Batteries
2023 (English)In: Small, ISSN 1613-6810, E-ISSN 1613-6829, Vol. 19, no 43, article id 2306829Article in journal (Refereed) Published
Abstract [en]

The development of “anode-free” lithium-metal batteries with high energy densities is, at present, mainly limited by the poor control of the nucleation of lithium directly on the copper current collector, especially in conventional carbonate electrolytes. It is therefore essential to improve the understanding of the lithium nucleation process and its interactions with the copper substrate. In this study, it is shown that diffusion of lithium into the copper substrate, most likely via the grain boundaries, can significantly influence the nucleation process. Such diffusion makes it more difficult to obtain a great number of homogeneously distributed lithium nuclei on the copper surface and thus leads to inhomogeneous electrodeposition. It is, however, demonstrated that the nucleation of lithium on copper is significantly improved if an initial chemical prelithiation of the copper surface is performed. This prelithiation saturates the copper surface with lithium and hence decreases the influence of lithium diffusion via the grain boundaries. In this way, the lithium nucleation can be made to take place more homogenously, especially when a short potentiostatic nucleation pulse that can generate a large number of nuclei on the surface of the copper substrate is applied.

Place, publisher, year, edition, pages
Wiley-VCH Verlagsgesellschaft, 2023
Keywords
anode‐free lithium‐metal batteries, copper, lithium diffusion, lithium electrodeposition, nucleation
National Category
Materials Chemistry
Identifiers
urn:nbn:se:uu:diva-516166 (URN)10.1002/smll.202306829 (DOI)001057824100001 ()
Funder
Swedish Research Council, VR‐2019‐04276
Available from: 2023-11-16 Created: 2023-11-16 Last updated: 2023-11-18Bibliographically approved
Iurchenkova, A. A., Tammela, P., Wang, Z., Strömme, M., Nyholm, L. & Lindh, J. (2023). Laser-induced carbonization of photothermal precursor as potential scalable approach to carbon material synthesis for energy storage applications. In: POLYSTORAGE winterschool 2023, Sestriere, Italy, 19th - 24th of March: . Paper presented at POLYSTORAGE winterschool 2023, Sestriere, Italy, 19th - 24th of March.
Open this publication in new window or tab >>Laser-induced carbonization of photothermal precursor as potential scalable approach to carbon material synthesis for energy storage applications
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2023 (English)In: POLYSTORAGE winterschool 2023, Sestriere, Italy, 19th - 24th of March, 2023Conference paper, Poster (with or without abstract) (Refereed)
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-509813 (URN)
Conference
POLYSTORAGE winterschool 2023, Sestriere, Italy, 19th - 24th of March
Available from: 2023-08-23 Created: 2023-08-23 Last updated: 2023-08-23
Zendejas Medina, L., de Costa, M. V., Donzel-Gargand, O., Nyholm, L., Gamstedt, E. K. & Jansson, U. (2023). Magnetron sputtered high entropy alloy/amorphous carbon nanocomposite coatings. Materials Today Communications, 37, Article ID 107389.
Open this publication in new window or tab >>Magnetron sputtered high entropy alloy/amorphous carbon nanocomposite coatings
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2023 (English)In: Materials Today Communications, ISSN 2352-4928, Vol. 37, article id 107389Article in journal (Refereed) Published
Abstract [en]

Magnetron sputter deposition of metal/carbon nanocomposites has been explored for many metals and a few alloys. In this paper, the formation of nanocomposites based on complex high entropy alloys (HEAs) was explored, focusing on the effect of the average carbon affinity on the phase formation. Two HEA systems were compared: CoCrFeMnNi and Cr26Fe27Ni27Ta20. For each alloy, around 20-50 at% carbon was added through combinatorial co-sputtering. Thermodynamic calculations predicted decomposition of these materials into multiple alloy phases, metal carbides, and, at higher concentrations, free graphitic carbon. Free carbon was found in the coatings at carbon concentrations above 28 and 33 at% for the CoCrFeMnNi and Cr26Fe27Ni27Ta20 systems, respectively, which agreed with the theoretical predictions. However, the segregation of metallic ele-ments and the formation of crystalline carbides were suppressed by the rapid quenching during deposition. All coatings were, instead, amorphous and consisted of either a single metallic phase or a mixture of a metallic phase and sp2- and sp3-hybridized carbon. Mechanical and electrochemical tests were performed, including in-situ fragmentation tests to quantify the crack resistance. The presence of free carbon made the coatings softer than the corresponding single-phase materials. Under tensile strain, the nanocomposite coatings formed a larger number of narrower cracks and exhibited less delamination at high strains.

Place, publisher, year, edition, pages
Elsevier, 2023
Keywords
Magnetron sputtering, Nanocomposite, Amorphous carbon, Fragmentation test
National Category
Materials Chemistry Inorganic Chemistry
Identifiers
urn:nbn:se:uu:diva-518095 (URN)10.1016/j.mtcomm.2023.107389 (DOI)001104007800001 ()
Funder
Swedish Research Council, 2019-00207Vinnova, 2016-05156
Available from: 2024-01-03 Created: 2024-01-03 Last updated: 2024-01-03Bibliographically approved
Iurchenkova, A. A., Tammela, P., Wang, Z., Strömme, M., Nyholm, L. & Lindh, J. (2023). Production of highly disordered carbon through CO2-laser carbonization of polypyrrole/Cladophora cellulose free-standing film for energy storage applications.. In: BATTERY 2030+ Annual Conference, Uppsala, Sweden: . Paper presented at BATTERY 2030+ Annual Conference, Uppsala, Sweden - poster presentation.
Open this publication in new window or tab >>Production of highly disordered carbon through CO2-laser carbonization of polypyrrole/Cladophora cellulose free-standing film for energy storage applications.
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2023 (English)In: BATTERY 2030+ Annual Conference, Uppsala, Sweden, 2023Conference paper, Poster (with or without abstract) (Refereed)
National Category
Nano Technology
Research subject
Engineering Science with specialization in Nanotechnology and Functional Materials
Identifiers
urn:nbn:se:uu:diva-509814 (URN)
Conference
BATTERY 2030+ Annual Conference, Uppsala, Sweden - poster presentation
Available from: 2023-08-23 Created: 2023-08-23 Last updated: 2023-08-23
Nyholm, L., Ericson, T. & Etman, A. S. (2023). Revisiting the stability of aluminum current collectors in carbonate electrolytes for High-Voltage Li-ion batteries. Chemical Engineering Science, 282, Article ID 119346.
Open this publication in new window or tab >>Revisiting the stability of aluminum current collectors in carbonate electrolytes for High-Voltage Li-ion batteries
2023 (English)In: Chemical Engineering Science, ISSN 0009-2509, E-ISSN 1873-4405, Vol. 282, article id 119346Article in journal (Refereed) Published
Abstract [en]

Anodic dissolution (often referred to as corrosion) of the aluminum positive electrode current collector above 3 V vs. Li+/Li can become performance-limiting in high-voltage Li-ion batteries. Herein, the results of a systematic reevaluation of this phenomenon at potentials up to 5.0 V vs. Li+/Li, using different carbonate electrolytes containing LiPF6, LiFSI or LiTFSI, are presented. The anodic dissolution is most likely caused by etching of the Al2O3 passive layer by protons released during the oxidation of the solvent. This sparks off a second oxidation step, involving the oxidation of the aluminum. While a passive AlF3 layer is formed in 1.0 M LiPF6, extensive anodic dissolution of aluminum is seen in 1.0 M LiFSI or LiTFSI at potentials where the solvent undergoes oxidation. In 5.0 M LiFSI, a passive layer of AlF3 is, however, formed most likely due to the presence of fluoride as an impurity in the LiFSI. No significant improvement was seen when using carbon-coated aluminum electrodes.

Place, publisher, year, edition, pages
Elsevier, 2023
National Category
Materials Chemistry Other Chemical Engineering
Identifiers
urn:nbn:se:uu:diva-516340 (URN)10.1016/j.ces.2023.119346 (DOI)001091679200001 ()
Funder
StandUpSwedish Research Council
Available from: 2023-11-22 Created: 2023-11-22 Last updated: 2023-11-22Bibliographically approved
Kaplan, M., Srinath, A., Riekehr, L., Nyholm, L., Hjörvarsson, B. & Fritze, S. (2022). Combinatorial design of amorphous TaNiSiC thin films with enhanced hardness, thermal stability, and corrosion resistance. Materials & design, 220, Article ID 110827.
Open this publication in new window or tab >>Combinatorial design of amorphous TaNiSiC thin films with enhanced hardness, thermal stability, and corrosion resistance
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2022 (English)In: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 220, article id 110827Article in journal (Refereed) Published
Abstract [en]

Amorphous TaNiSiC and TaNiC films (with varying Ta/Ni and Si/C ratios) were deposited using combinatorial magnetron sputtering. The TaNiSiC films remained X-ray amorphous after four hour-long annealings up to 700 °C, while TaNiC alloys with high Ni and C contents crystallized. These differences were attributed to a strong driving force for separation of Ni and C in TaNiC, whereas the addition of Si, due to its solubility in the other elements, reduced the elemental segregation in TaNiSiC. The as-deposited TaNiSiC films exhibited hardnesses of 9–12 GPa. Annealing led to an increase in hardness by 2–4 GPa, due to decreases in average atomic distance, as evidenced by X-ray diffraction measurements. Potentiodynamic polarizations from –0.7 to +1.5 V vs. Ag/AgCl (3 M NaCl) in 10 mM sodium borate showed lower current densities by up to 2 orders of magnitude with increasing Ta content (28–52 at.%). Changes in Si/C content (7–13 at.% Si) had no effect. However, optical microscopy showed that TaNiSiC films with high Si/low C contents (13/10 at.%) suffered much less localized etching compared to TaNiC films. Thus, Si had a significant role in increasing the mechanical strength, corrosion resistance, and thermal stability of the TaNiSiC films.

Place, publisher, year, edition, pages
Elsevier, 2022
Keywords
Metal lic glasses, thermal stability, mechanical properties, corrosion resis- tance
National Category
Materials Chemistry Condensed Matter Physics
Identifiers
urn:nbn:se:uu:diva-468121 (URN)10.1016/j.matdes.2022.110827 (DOI)000826404700006 ()
Funder
Swedish Foundation for Strategic Research, GMT14-0048Swedish Research CouncilSwedish Research Council
Available from: 2022-02-20 Created: 2022-02-20 Last updated: 2022-08-12Bibliographically approved
Paschalidou, E.-M., Lindblad, R., Zendejas Medina, L., Karlsson, D., Jansson, U. & Nyholm, L. (2022). Corrosion studies on multicomponent CoCrFeMnNi(C) thin films in acidic environments. Electrochimica Acta, 404, Article ID 139756.
Open this publication in new window or tab >>Corrosion studies on multicomponent CoCrFeMnNi(C) thin films in acidic environments
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2022 (English)In: Electrochimica Acta, ISSN 0013-4686, E-ISSN 1873-3859, Vol. 404, article id 139756Article in journal (Refereed) Published
Abstract [en]

The corrosion resistances of near equimolar CoCrFeMnNi magnetron-sputtered thin films with different carbon concentrations were examined in 0.05 M HCl and 0.05 M H2SO4. Polarization curves were recorded with different scan rates with and without reducing the native oxide. The results showed that the carbon concentration and the experimental conditions affected the electrochemical behaviour mainly in the Cr transpassive region. At potentials above 850 mV, the carbon-containing films were more corrosion resistant in 0.05 M HCl than in 0.05 M H2SO4 due to a lower carbon oxidation rate in 0.05 M HCl, facilitating the formation of a Mn-rich oxide layer. (C)& nbsp;2021 The Author(s). Published by Elsevier Ltd.& nbsp;

Place, publisher, year, edition, pages
ElsevierElsevier BV, 2022
National Category
Materials Chemistry
Identifiers
urn:nbn:se:uu:diva-473954 (URN)10.1016/j.electacta.2021.139756 (DOI)000778816800008 ()
Funder
Swedish Research Council
Available from: 2022-05-06 Created: 2022-05-06 Last updated: 2024-01-15Bibliographically approved
Projects
Electrochemical Techniques for the Development of Miniaturised Batteries and Sensors [2008-03690_VR]; Uppsala UniversityElectrodeposition: a valuable tool in the manufacturing of materials for the next generation of Li-ion batteries [2011-03506_VR]; Uppsala UniversityElectrochemistry for safe and durable high-capacity lithium based batteries [2015-04421_VR]; Uppsala UniversitySolving two major electrochemical problems causing degradation of lithium-based batteries [2019-04276_VR]; Uppsala University
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0001-9292-016X

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