2. ELECTRICAL PROPERTIES OF GLASSES

3. INORGANIC GLASSES CONDUCTIVITY NATURE AND APPLICATIONS Pure ionic conductivity : Pure electronic conductivity : - demonstrated one century ago - mainly due to monovalent cations Li +, Na +, Ag + - ionic exchange for : glass strengthening optical guides - selective electrodes - solid state batteries - electrical boosting in glass industry (T > Tg) - by electronic transfer between localized states - xerography - photovoltaïc cells - memory effect Mixed (ionic + electronic) conductivity : - alkali cations and - electronic transfer - electrodes materials - electrochromic devices

12. THIN FILM LITHIUM BATTERIES WITH GLASSY ELECTROLYTES AND POSITIVE

14. BE 11

15. BE 12

16. BE 13

17. BE 14 - SiO 2 - TeO 2 - P 2 O 5 - Fe 2 O 3 - V 2 O 5 - WO 3 While synthesis : 2 V +V + O 2- 2 V +IV + 1/2 O 2 An electronic transfer between localized states : V +IV V +V V V V +IV V OXYDE BASED ELECTRONICALLY CONDUCTING GLASSES Network former Transition metal oxydes

18. BE 15

19. BE 16

20. BE 17