title: New lithium metal polymer solid state battery for an ultrahigh energy: nano C-LiFePO₄ versus nano Li1.2V₃O₈.
abstract: Novel lithium metal polymer solid state batteries with nano C-LiFePO4 and nano Li1.2V3O8 counter-electrodes (average particle size 200 nm) were studied for the first time by in situ SEM and impedance during cycling. The kinetics of Li-motion during cycling is analyzed self-consistently together with the electrochemical properties. We show that the cycling life of the nano Li1.2V3O8 is limited by the dissolution of the vanadium in the electrolyte, which explains the choice of nano C-LiFePO4 (1300 cycles at 100% DOD): with this olivine, no dissolution is observed. In combination with lithium metal, at high loading and with a stable SEI an ultrahigh energy density battery was thus newly developed in our laboratory.
authors.affiliation: †Institut de Recherche dHydro-Québec (IREQ), 1800 Bd Lionel-Boulet, Varennes, Quebec J3X 1S1 Canada.
authors.forename: P
authors.initials: P
authors.lastname: Hovington
authors.affiliation: †Institut de Recherche dHydro-Québec (IREQ), 1800 Bd Lionel-Boulet, Varennes, Quebec J3X 1S1 Canada.
authors.forename: M
authors.initials: M
authors.lastname: Lagacé
authors.affiliation: †Institut de Recherche dHydro-Québec (IREQ), 1800 Bd Lionel-Boulet, Varennes, Quebec J3X 1S1 Canada.
authors.forename: A
authors.initials: A
authors.lastname: Guerfi
authors.affiliation: †Institut de Recherche dHydro-Québec (IREQ), 1800 Bd Lionel-Boulet, Varennes, Quebec J3X 1S1 Canada.
authors.forename: P
authors.initials: P
authors.lastname: Bouchard
authors.affiliation: ‡Sorbonne Universités, UPMC Univ Paris 06, Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC), CNRS UMR 7590, 4 place Jussieu, F-75005 Paris,France.
authors.forename: A
authors.initials: A
authors.lastname: Mauger
authors.affiliation: §Sorbonne Universités, UPMC Univ Paris 06, Physicochimie des Electrolytes et Nanosystèmes Interfaciaux (PHENIX), CNRS UMR 8234, 4 place Jussieu, F-75005 Paris, France.
authors.forename: C M
authors.initials: CM
authors.lastname: Julien
authors.affiliation: ∥CIC Energigune, Parque Tecnologico de Alava, Albert Einstein 48, Ed. CIC, 01510 Miñano, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Armand
authors.affiliation: †Institut de Recherche dHydro-Québec (IREQ), 1800 Bd Lionel-Boulet, Varennes, Quebec J3X 1S1 Canada.
authors.forename: K
authors.initials: K
authors.lastname: Zaghib
keywords: Lithium metal polymer battery; in situ SEM; nano C-LiFePO4; nano Li1.2V3O8