Realizing fast Li-ion conduction of Li3PO4 solid electrolyte at low temperature by mechanochemical formation of lithium-containing dual-shells

Abstract

Dual lithium-containing hydride/oxide shells are constructed by in situ mechano-induced assembly of Li3PO4 reacting with LiBH4. The ionic conductivity of the Li3PO4-based composite is promoted nearly 4 orders of magnitude, up to 0.04 mS cm−2 at 75 °C as compared to the pure one, possessing an electrochemical window of −0.2-5 V (vs. Li/Li+).