Joining Technology

Group

Glasses and glass-ceramics for Li-ion-batteries

Topic

Porous organic polymer membranes reinforced with ceramic particles are applied in Lithium ion batteries as separators between anodes and cathodes. The mechanical stability of these separators, which are filled with a Li-ion conducting electrolyte, determine the maximum operating temperatures of the batteries and improve their resistance against short circuits or hot spots. The IKTS develops Li ion conducting filler materials based on glass ceramics. Beside the mechanical stabilizing effect these types of inorganic fillers can contribute to the overall conductivity of the separator-electrolyte arrangement.

crystal phases

crystal phases in Li1+xAlxTi2-x(PO4)3-type glass ceramics depending on the crystallization temperature

GlaeserLi-Batteriediagr2kl

Solid state impedance spectra of Li+-conducting glass ceramics based on Li1+xAlxTi2-x(PO4)3

Effect-of-degree

Effect of degree of Al-substitution on the conductivity of Li+-conducting glass ceramics