1 Natural Abundance 17 O Nuclear Magnetic Resonance and Computational Modeling Studies of Lithium Based Liquid Electrolytes Xuchu Deng ab , Mary Y. Hu a , Xiaoliang Wei a , Wei Wang a , Zhong Chen b , Jun Liu a and Jian Zhi Hu* a a The Joint Center for Energy Storage Research (JCESR), Pacific Northwest National Laboratory, Richland, WA 99352, USA b Department of Electronic Science, Xiamen University, China. * To whom correspondence should be addressed: Jian Zhi Hu; Email: Jianzhi.Hu@pnnl.gov ; Phone: (509) 371-6544; Fax: (509) 371-6546 © 2015. This manuscript version is made available under the Elsevier user license http://www.elsevier.com/open-access/userlicense/1.0/