abstract |
A glass-based material is disclosed as an additive for a rechargeable lithium ion secondary battery, preferably with liquid electrolytes, to enhance high rate capability, wherein the glass based material contains at least (in% by weight based on oxide): total SiO 2 + F + P 2 O 5 20-95; Al 2 O 3 0-30, wherein the density is preferably less than 5 g / cm 3 . |