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Batteries for Energy Storage
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Structural Chemistry.ORCID iD: 0000-0003-4440-2952
2017 (English)Conference paper, Oral presentation with published abstract (Other academic)
Abstract [en]

There is a multitude of different materials that can be used as anode and cathode materials for Li- and Na-based batteries. Some examples are carbon materials for the negative electrode and transition-metal oxides for the positive electrode. To increase the capacity of a Li-ion battery, the positive electrode is the bottleneck, while the bottleneck for the Na-ion battery is the negative electrode. For both types of batteries the electrolyte material is vital for the power capability of the battery and for the safety of a battery cell.

 

In this lecture, I will describe how different in-operando methods probing the atomic structure of battery materials can lead to insights in the subtleties of how small changes in parameters - such as synthesis conditions, particle morphology and size of different materials - can influence the function of a battery. All the material components have to be probed in a real battery context, and to understand their true function in this context, synchrotron-radiation as well as neutron diffraction, but also different spectroscopic methods, are important and complementary tools.

 

A special focus will be given to intercalation and insertion materials: solids that can host the mobile lithium or sodium ions. The interface between the electrode and electrolyte materials will also be discussed by describing the so-called SEI (Solid Electrolyte Interphase), which is so important for the function of Li-ion and Na-ion batteries and which is formed during electrochemical cycling. Synchrotron-radiation (and neutron) methods are, in general, vital and necessary tools for the understanding of the complex reactions taking place both in bulk materials and at the interfaces between the components in a battery. Results from in-operando studies will be given to exemplify the current status of the battery research field.

Place, publisher, year, edition, pages
2017.
Keyword [en]
Li-ion battery and Na-ion battery
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-337514OAI: oai:DiVA.org:uu-337514DiVA: diva2:1169884
Conference
RACIRI summer school Ronneby brunn 2017
Funder
StandUp
Available from: 2017-12-30 Created: 2017-12-30 Last updated: 2017-12-30

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