In light of the promising characteristics exhibited by hydrides, it is imperative to address several formidable challenges before realizing their practical utility, with a notable concern being their relatively deficient ionic conductivity at RT . Taking lithium borohydride (LiBH 4 ) as an illustrative example, it is evident that its RT ionic conductivity is significantly limited, being three to four orders of magnitude lower than desired . However, a transformative phase transition occurs at elevated temperatures, specifically at 388 K, leading to a remarkable augmentation in lithium-ion mobility, culminating in an impressive conductivity value of 5×10 -3 S cm -1 at 423 K .