Silicates and titanates as high-energy cathode materials for Li-ion batteries

Robert Dominko

doi:10.1117/12.850801

28 April 2010 Silicates and titanates as high-energy cathode materials for Li-ion batteries

Robert Dominko

Proceedings Volume 7683, Energy Harvesting and Storage: Materials, Devices, and Applications; 76830J (2010) https://doi.org/10.1117/12.850801
Event: SPIE Defense, Security, and Sensing, 2010, Orlando, Florida, United States

Abstract

Several different cathode materials for Li-ion batteries with a general formula Li₂MXO₄ (M= Fe, Mn, Ni, V and X= Si, Ti) were synthesized and characterized. Generally those materials can be classified into the group of silicates with tetrahedral coordinated cations and into titanates with a rock-salt structure. The common characteristic of these two families of new cathode materials is two lithium cations in the structure and at lest theoretical possibility to exchange more than one electron per transition metal and consequently enable much higher specific capacity of battery. Detailed structural and electrochemical characterization (including some in-situ characterization techniques, like X-ray absorption and Mössbauer spectroscopy) are discussed in this paper. Influence of the structural stability and particle size is discussed based on the obtained electrochemical results. Finally we show for the first time operation of Li₂FeSiO₄ with graphite electrode at 60°C.

Citation Download Citation

Robert Dominko "Silicates and titanates as high-energy cathode materials for Li-ion batteries", Proc. SPIE 7683, Energy Harvesting and Storage: Materials, Devices, and Applications, 76830J (28 April 2010); https://doi.org/10.1117/12.850801

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available