1. School of Materials Science and Engineering, University of Shanghai for Science & Technology, Shanghai 200093, China
2. Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland 20742, United States
3. Space and Defense Division, Saft America Inc., Cockeysville, Maryland 21030, United States
4. Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, United States