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Title [sv]
Natriumjonledning i natriumjonbatterier
Title [en]
Na-ion mobility in Na-ion batteries
Abstract [sv]
The overall goal of this application is to study sodium-ion (Na-ion) mobility in electrodes and electrolytes for Na-ion batteries operating at room temperature. Na-ion batteries are mainly aimed for large scale electric storage where prize and long life (up to 30 years) is more important than small size (volumetric energy density). Geopolitically, despite their lower energy content, Na-batteries could be an alternative to Li-batteries due to the low cost and large abundance of sodium as number six of the most abundant elements in the earth?s crust. The major challenge is the limited number of existing negative electrode materials. This application intends to address this by studying electrochemical insertion mechanisms of sodium in hard carbons, titanates and intermetallic tin/antimony systems using sodium containing electrolytes. Beside synthesis of new materials and electrochemical testing versus either Na(s) or NaFePO4 as counter electrodes, the materials will be studied with in situ X-ray and neutron diffraction. Electrode/electrolyte interfaces will also be important since it is at the interfaces, the electron transfer reaction takes place and it is here unwanted side-reactions starts as a function of electrochemical treatment, temperature, electrolyte composition etc. Interfaces will be studied with a methodology developed by us combining soft and hard photoelectron spectroscopy (HAXPES) at synchrotrons. We will contribute with unique results to this new research area.
Principal InvestigatorEdström, Kristina
Coordinating organisation
Uppsala University
Funder
Period
2013-01-01 － 2015-12-31
National Category
Materials ChemistryInorganic ChemistryOther Chemical Engineering
Identifiers
DiVA, id: project:4673Project, id: 2012-03392_VR
v. 2.49.0
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