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Interfaces and Interphases in Li- and Na- batteries
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.ORCID iD: 0000-0003-4440-2952
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.
2017 (English)Conference paper, Oral presentation with published abstract (Refereed)
Abstract [en]

There are many complex reactions taking place in lithium (LIB) and sodium-ion batteries (SIB). Some of these are unique for the SIBs and some are similar to the reactions taking place in LIBs. One of the main areas of research at the Ångström Advanced Battery Centre (ÅABC) at Uppsala University is to investigate the electrolyte/electrode interface, including the solid-electrolyte interphase (SEI) on the anode and the cathode electrolyte interface (CEI) on the cathode, in rechargeable batteries. We have performed several studies using in-house and synchrotron-based photoelectron spectroscopy, such as hard X-ray Photoelectron Spectroscopy (HAXPES), in order to elucidate the subtle depth profile composition of SEI and SPI and how they are influenced by electrochemical cycling and how this influence the performance of SIBs.

We have investigated many different categories of electrode materials: i.e. conversion, alloying, and insertion anodes as well as metal-oxide and phosphate cathodes. This presentation will describe how the SEI will be on the negative electrodes will be influenced by temperature, the electrolyte salt and battery cycling conditions, and the cathode composition.

An in-depth discussion will be made comparing the interfaces and interphases in LIBs with those for SIBs.

Acknowledgements

All my students and post docs who have worked and are still working on interface studies are acknowledged for their contributions: Bertrand Philippe, Maria Hahlin, Julia Maibach, Sara Malmgren, Katarzyna Ciosek Högström, Fredrik Lindgren, and Chao Xu. The funding from the Swedish Energy Agency as well as the Swedish Research Council is highly appreciated.

References

[1] Bertrand Philippe, Thesis Upsaliensis (www.uu.se) 2013

[2] Siham Doubaji, Bertrand Philippe, Ismael Saadoune, Mihaela Gorgoi, Torbjorn Gustafsson, Abderrahim Solhy, Mario Valvo, Håkan Rensmo, Kristina Edström, ChemSusChem, 2016, 9, pp  97-108.

[3] Sara Malmgren, Thesis Upsalienses (www.uu.se) 2013.

[4] Katarzyna Ciosek, Thesis Upsaliensis (www.uu.se) 2015

[5] Fredrik Lindgren, Thesis Upsalienses (www.uu.se) 2016

[6] Chao Xu, et al., Chem. Mater., 2015, 27 (7), pp 2591–2599

Place, publisher, year, edition, pages
2017.
Keywords [en]
SEI and lithium-ion battery and sodium-ion battery
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-337510OAI: oai:DiVA.org:uu-337510DiVA, id: diva2:1169879
Conference
20th Topical Meeting of the International Society for Electrochemistry 2017, Argentina
Funder
StandUpAvailable from: 2017-12-30 Created: 2017-12-30 Last updated: 2017-12-30

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