Abstract Fast Li‐ion conductivity at room temperature is a major challenge for utilization of all‐solid‐state Li batteries. Metal borohydrides with neutral ligands are new emerging class solid‐state ionic conductors, and here we report the discovery mono‐methylamine lithium borohydride very fast + temperature. LiBH 4 ⋅CH 3 NH 2 crystallizes in monoclinic space group P 1 / c , forming two‐dimens...

Given the rise in popularity of wearable electronics that are able to deform into desirable configurations while maintaining electrochemical functionality, stretchable and flexible (hybrid) supercapacitors (SCs) have become increasingly interest as innovative energy storage devices. Their outstanding power density, long lifetime with low capacitance loss, appropriate particular hybrid cases mak...

Extensive efforts have been made to improve the Li-ionic conductivity of solid electrolytes (SE) for developing promising all-solid-state Li-based batteries (ASSB). Recent studies suggest that minimizing existing interface problems is even more important than maximizing SE. Interfaces are essential in ASSB, and their properties significantly influence battery performance. Interface problems, ar...