E. Kibena-Põldsepp, R. Sibul, S. Ratso (Institute of Chemistry, University of Tartu), L. Matisen, M. Merisalu, M. Kook (Institute of Physics, University of Tartu), V. Sammelselg, and K. Tammeveski (Institute of Chemistry, University of Tartu)

M. Hughes, J. A. Allen, and S. W. Donne (University of Newcastle)

I. Acznik and K. Lota (Institute of Non-Ferrous Metals, Lab. Batteries & Cells)

B. A. Tavakoli Mehrabadi, J. R. Regalbuto, J. W. Weidner, and J. R. Monnier (University of South Carolina)

X. Deng, L. Ma, and N. Zhao (Tianjin University)