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A General Method to Fabricate Free-Standing Electrodes: Sulfonate Directed Synthesis and their Li+ Storage Properties
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.ORCID iD: 0000-0001-5861-4281
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
2015 (English)In: Chemistry of Materials, ISSN 0897-4756, E-ISSN 1520-5002, Vol. 27, no 11, 3957-3965 p.Article in journal (Refereed) Published
Abstract [en]

For materials based on a spatially varied conversion reaction, Li+ storage properties largely hinge on the rational design of the concurrent electronic and ionic pathways in the electrode. We herein present a scalable approach for integrating size-tunable Fe3O4 nanocrystals with hierarchical porous carbon foam by employing sulfonated high internal phase emulsion polymers (polyHIPE) as the carbon source and substrate. To verify the feasibility of our configuration design, the electrodes of such a type were directly evaluated in pouch cells without using an auxiliary binder or a metallic current collector: The best performing composite electrode, with optimized oxide size range, exhibits a good capacity retention of 89.7% of the first charge capacity after 100 cycles and high rate durability up to 4 A g–1. Furthermore, this synthetic approach was also applied to develop carbon/FeS free-standing anodes using the sulfonate groups as the sulfur source, demonstrating its generic applicability to the fabrication of other free-standing electrodes with enhanced Li+ storage properties.

Place, publisher, year, edition, pages
2015. Vol. 27, no 11, 3957-3965 p.
Keyword [en]
porous polymer, carbon foam, battery
National Category
Chemical Process Engineering Nano Technology
Research subject
Chemistry with specialization in Materials Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-253672DOI: 10.1021/acs.chemmater.5b00853ISI: 000356202800024OAI: oai:DiVA.org:uu-253672DiVA: diva2:815453
Available from: 2015-06-01 Created: 2015-06-01 Last updated: 2017-12-04Bibliographically approved

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Publisher's full texthttp://dx.doi.org/10.1021/acs.chemmater.5b00853http://pubs.acs.org/doi/pdf/10.1021/acs.chemmater.5b00853

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Ma, YueAsfaw, Habtom DestaEdström, Kristina

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