title: A Self-Binding, Melt-Castable, Crystalline Organic Electrolyte for Sodium Ion Conduction.
abstract: The preparation and characterization of the cocrystalline solid-organic sodium ion electrolyte NaClO4(DMF)3(DMF=dimethylformamide) is described. The crystal structure of NaClO4(DMF)3reveals parallel channels of Na+and ClO4-ions. Pressed pellets of microcrystalline NaClO4(DMF)3exhibit a conductivity of 3×10-4S cm-1at room temperature with a low activation barrier to conduction of 25 kJ mol-1. SEM revealed thin liquid interfacial contacts between crystalline grains, which promote conductivity. The material melts gradually between 55-65 °C, but does not decompose, and upon cooling, it resolidifies as solid NaClO4(DMF)3, permitting melt casting of the electrolyte into thin films and the fabrication of cells in the liquid state and ensuring penetration of the electrolyte between the electrode active particles.
authors.affiliation: Department Of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, PA, 19122, USA.
authors.forename: Parameswara Rao
authors.initials: PR
authors.lastname: Chinnam
authors.affiliation: Department Of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, PA, 19122, USA.
authors.forename: Birane
authors.initials: B
authors.lastname: Fall
authors.affiliation: Department of Mechanical Engineering, Temple University, 1947 N. 12th Street, Philadelphia, PA, 19122, USA.
authors.forename: Dmitriy A
authors.initials: DA
authors.lastname: Dikin
authors.affiliation: Department Of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, PA, 19122, USA.
authors.forename: AbdelAziz
authors.initials: A
authors.lastname: Jalil
authors.affiliation: Department Of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, PA, 19122, USA.
authors.forename: Clifton R
authors.initials: CR
authors.lastname: Hamilton
authors.affiliation: Department Of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, PA, 19122, USA.
authors.forename: Stephanie L
authors.initials: SL
authors.lastname: Wunder
authors.affiliation: Department Of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, PA, 19122, USA.
authors.forename: Michael J
authors.identifier: 0000-0003-0212-2557
authors.initials: MJ
authors.lastname: Zdilla
keywords: cocrystals; electrochemistry; sodium-ion batteries; solid electrolytes