1. School of Engineering and Applied Science; Wyss Institute for Biologically Inspired Engineering; Joint Center for Energy Storage Research; Harvard University; Cambridge MA 02138 USA
2. Department of Materials Science and Engineering; Joint Center for Energy Storage Research; Massachusetts Institute of Technology; Cambridge MA 02139 USA
3. Department of Mechanical Engineering; Joint Center for Energy Storage Research; Massachusetts Institute of Technology; Cambridge MA 02139 USA
4. Department of Mechanical Science and Engineering; Joint Center for Energy Storage Research; University of Illinois at Urbana-Champaign; Urbana IL 61801 USA