Aklalouch M.,Institute Of Ciencia Of Materials Of Barcelona Consejo Superior Of Investigaciones Cientificas Icmab Csic |
Olivares-Marin M.,Institute Of Ciencia Of Materials Of Barcelona Consejo Superior Of Investigaciones Cientificas Icmab Csic |
Lee R.-C.,National Taiwan University |
Palomino P.,Complutense University of Madrid |
And 2 more authors.
ChemSusChem | Year: 2015
By comparing carbon electrodes with varying porosity in Li-O2 cells, we show that the effect of electrolyte stirring at a given current density can result in a change from 2D to 3D growth of discharged deposits. The change of morphology is evident using electron microscopy and by analyzing electrode pore size distribution with respect to discharge capacity. As a consequence, carbon electrodes with different textural properties exhibit different capacity enhancements in stirred-electrolyte cells. We demonstrate that mass transport can directly control the discharge mechanism, similar to the electrolyte composition and current density, which have already been recognized as determining factors. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.