title: An iodide-based Li7P2S8I superionic conductor.
abstract: In an example of stability from instability, a Li(7)P(2)S(8)I solid-state Li-ion conductor derived from β-Li(3)PS(4) and LiI demonstrates electrochemical stability up to 10 V vs Li/Li(+). The oxidation instability of I is subverted via its incorporation into the coordinated structure. The inclusion of I also creates stability with the metallic Li anode while simultaneously enhancing the interfacial kinetics and ionic conductivity. Low-temperature membrane processability enables facile fabrication of dense membranes, making this conductor suitable for industrial adoption.
authors.affiliation: Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.
authors.forename: Ezhiylmurugan
authors.initials: E
authors.lastname: Rangasamy
authors.forename: Zengcai
authors.initials: Z
authors.lastname: Liu
authors.forename: Mallory
authors.initials: M
authors.lastname: Gobet
authors.forename: Kartik
authors.initials: K
authors.lastname: Pilar
authors.forename: Gayatri
authors.initials: G
authors.lastname: Sahu
authors.forename: Wei
authors.initials: W
authors.lastname: Zhou
authors.forename: Hui
authors.initials: H
authors.lastname: Wu
authors.forename: Steve
authors.initials: S
authors.lastname: Greenbaum
authors.forename: Chengdu
authors.initials: C
authors.lastname: Liang