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Title [sv]
Nanostrukturerade materials och elektrokemiska system för energiomvandling och lagring
Title [en]
Nanostructured Materials and Electrochemical Systems for Energy Conversion and Storage
Abstract [sv]
The lithium-ion battery is the key energy storage technology for the future society where the actions to reduce the emissions of CO2 are vital. This battery is unique since it is possible to tune the materials for high-, medium and low power applications. The goal of this project is to understand the atomic processes occurring in electrode materials during battery cycling, with the focus on the negative side of the battery. The selected compounds are: nanostructured carbon materials and nano-alloys, intermetallics and oxides based on silicon or tin. Lithium alloying with silicon and tin lead to large volume expansions. New materials will be synthesised with the goal to circumvent the detremental volume increase. Atomic structure knowledge is needed for the selection of useful material combinations. The materials will be studied in either batteries for hybrid vehicles or consumer electronics. New architectures for 3D microbatteries that can power MEMS, sensors or medical implants, will be built based on nano-structures of copper and aluminium used as current collectors. Tin and silicon materials will be deposited on the copper and transition-metaloxides on the aluminium. The electrode/electrolyte interfaces will be studied with advanced surface techniques. The interfaces determine stability, safety and battery life time. In situ techniques will be developed for the study of the atomic (X-ray and neutron diffraction) or electronic states (soft X-ray spectroscopy).
Principal InvestigatorEdström, Kristina
Coordinating organisation
Uppsala University
Funder
Period
2009-01-01 － 2011-12-31
Identifiers
DiVA, id: project:3428Project, id: 2008-03800_VR

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