1. Department of Chemical Engineering; Stanford University; Stanford CA 94305 USA
2. Department of Electrical Engineering; Stanford University; Stanford CA 94305 USA
3. Department of Materials Science and Engineering; Stanford University; Stanford CA 94305 USA
4. Department of Chemistry; Stanford University; Stanford CA 94305 USA
5. BASF Schweiz AG, GMV/BE; Schwarzwaldallee 215 4002 Basel Switzerland
6. BASF SE, GMV/T; Carl-Bosch-Strasse 38 67056 Ludwigshafen Germany