Lithium-ion batteries are the well-established power source of portable electronic devices. Research efforts are now mainly motivated by the quest for improved energy storage systems for renewable energies and urban transportation. Future Li-ion battery applications such as electric vehicles require higher energy or power densities. Other applications require a good electrochemical behavior at high temperatures.The reactivity at electrode/electrolyte interfaces is a very important issue. Common Li-ion batteries can work only because a passivation layer is formed at the surface of graphite that prevents this electrode from side reactions towards electrolyte. The use of new nanosized electrode materials, or operating at unusual temperatures, increases the importance of these electrode/electrolyte interface issues that directly impact the safety and the life span of batteries. In this presentation I will show some of the latest results obtained in the study of ageing processes in Li-ion batteries by X-ray Photoelectron Spectroscopy (XPS).

Lithium-ion batteries: Ageing processes and surface/interface phenomena

245th National Meeting (2013)

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