Electrolyte design for inorganic-rich solid-electrolyte interfaces to enable low-temperature Li metal batteries

Ether-based electrolyte promotes robust LiF/LiNxOy-rich solid-electrolyte interphases (SEIs) with favorable interfacial conduction and accommodation, thus decreasing operation temperatures of Li metal batteries to -40 degrees C. At -30 degrees C, the Li||Ni0.85Co0.05Al0.1O2 battery achieves >80% retention (130 mA h g(-1)) of its room-temperature capacity, and presents stable cycling over 100 cycles.

Automated summary

Ether-based electrolyte enables Li metal batteries to operate at lower temperatures with improved capacity retention and cycling stability.