S-1 Supporting Information for: Improving Ionic Conductivity and Lithium-Ion Transference Number in Lithium-Ion Battery Separators Raphael Zahn, Marie Francine Lagadec, Michael Hess, and Vanessa Wood* Laboratory for Nanoelectronics, Department of Information Technology and Electrical Engineering, Eidgenoessische Technische Hochschule Zurich, 8092 Zurich, Switzerland * To whom correspondence should be addressed. E-mail: vwood@ethz.ch