%0 Journal Article %K Lithium battery %K Manganese oxide %K Depth profile %K Valence state %K X-ray spectroscopy %A Artur Braun %A Hongxin Wang %A Tobias Funk %A Soenke Seifert %A Elton J Cairns %B Journal of Power Sources %D 2010 %G eng %N 22 %P 7644-7648 %R 10.1016/j.jpowsour.2010.05.053 %T Depth profile analysis of a cycled lithium ion manganese oxide battery electrode via the valence state of manganese, with soft X-ray emission spectroscopy %V 195 %8 11/2010