The making of glasses using LiCoO 2 as electrode-active material from Li + -ion batteries and TeO 2 as glass former is reported. The reagents were mixed guided by the x LiCoO 2 -(100 – x )TeO 2 with x = 20, 30, 40 and 50 mol% formulas and melted at 950 °C for 15 min. The obtained materials were then characterized by density, X-ray diffraction (Mo- K α radiation), Fourier-transform infrared (FT-IR) spectroscopy, and differential scanning calorimetry (DSC). The products appeared X-ray amorphous up to 40 mol% LiCoO 2 , whereas at 50 mol% LiCoO 2 the formation of a glass-ceramic was indicated. The FT-IR spectra harmonized with the occurrence of TeO 3+1 , TeO 4 and TeO 3 units, and a conversion toward the latter with increasing LiCoO 2 content. The DSC analysis exposed that the glass transition and crystallization temperatures overall tended to decrease with increasing LiCoO 2 content, thus leading to reduced glass stability. The evaluation overall supports the fitness of TeO 2 for LiCoO 2 vitrification at moderate loading, thus encouraging additional research with material recovered from spent batteries. • Tellurite glasses made using LiCoO 2 electrode-active material and TeO 2 as glass former • Characterized by density, XRD, FT-IR, and DSC • Vitrification with TeO 2 suggested as strategy for management of lithium battery electrode
José A. Jiménez (Wed,) studied this question.