Synthesis of K[B3H7NH2BH2NH2B3H7] for a K-ion solid-state electrolyte

A potential K-ion solid-state electrolyte K[B 3 H 7 NH 2 BH 2 NH 2 B 3 H 7 ] was synthesized and its relatively high K + conductivity of 1.01 × 10 −4 S cm −1 at 75 °C was obtained probably due to the increased electrostatic potential and size of the anions.