Theoretical approaches to superionic conductivity
Tóm tắt
Recent theoretical approaches to the understanding of superionic conductivity in polycrystalline, glassy and polymeric materials are briefly reviewed. Phase transitions to the superionic conducting state in the AgI family are apparently triggered by cluster formation and strong mobile ion interaction within the clusters. Anomalous conductivity and related physical properties are explained in the cluster induced distortion model. Ionic composites such as AgX : Al2O3 (X = Cl, Br and I) involve conducting and non-conducting phases and the all-important interface between the two whose space charge enhances the conductivity and also trigger phase transitions to exotic polymorphic phases, for which the mechanisms are yet to be explored. Ion hopping dynamics controls the conductivity of superionic glasses. Mode coupling and jump relaxation theories account for the non-Debye relaxation observed in a.c. conductivity of these glasses. The theory of conductivity in polymer electrolytes—still in its infancy—involves their complex structure and glass transition behaviour. Preparative and thermal history, composition and crystallinity control ionic conductivity. New approaches to the synthesis of optimal polymer electrolytes such as rubbery electrolytes, crystalline polymers and nanocomposites must be considered before achieving a comprehensive theoretical understanding.
Tài liệu tham khảo
Angell C Aet al 1993Nature 362 137
Aniya M and Wakamura K 1998Solid state ionics: Science and technology (eds) B V R Chowdariet al (Singapore: World Scientific) p. 43
Aniya M 2000aSolid State Ionics 136–137 1085
Aniya M 2000bSolid state ionics: Materials and devices (eds) B V R Chowdari and W Wang (Singapore: World Scientific) p. 51
Bhattacharya A Jet al 1997Solid State Ionics 95 283
Bhattacharya A Jet al 1999Phys. Rev. B60 909
Chandra A and Chandra S 1994Phys. Rev. B49 633 and references therein
Croce Fet al 1998Nature 394 456
Funke K 1997Defects and Diffusion Forum 143–147 1243
Funke K and Wilmer D 2000Solid State Ionics 136–137 1329 and references therein
Funke Ket al 1996Solid State Ionics 85 293
Funke Ket al 1997Solid State Ionics 94 27
Gadjourova Zet al 2001Nature 412 520
Govindaraj G and Murugaraj R 2000Mater. Sci. and Eng. B77 60
Hairetdinov E Fet al 1994Phys. Rev. B50 13259
Ingram M D 1998Solid state ionics: Science and technology (eds) B V R Chowdariet al (Singapore: World Scientific) p. 21
Ishii T and Kamishima O 1999J. Phys. Soc. Jpn 68 3580
Ishii T and Abe T 1999J. Phys. Soc. Jpn 68 3127 and references therein
Jain H 1999Metal Mater. & Process. 11 317
Kato Yet al 1981Solid State Ionics 40/41 632
Kawamura J and Shimoji M 1986J. Non-Cryst. Solids 88 295
Kvist A and Josefson A M 1968Z. Naturforsch. 23a 625
Laskar A L 1992Solid state ionics (eds) S Chandraet al (Singapore: World Scientific) p. 459
Lee J Set al 2000J. Electrochem. Soc. 147 2407 and references therein
Lidiard AB 1957Handb. Phys. 20 246
Maass Pet al 1996Phys. Rev. Lett. 77 1528
Maier J 1985Mater. Res. Bull. 20 383
Maier J 2000Z. Anorg. Allg. Chem. 426 264
Ngai K L 1980Com. Solid State Phys. 9 141
Nolting J and Rein D 1969Z. Phys. Chem. Neue Folge 66 150
Ogawa H and Kobayashi M 2002Solid State Ionics 148 211
Rao K J 2002Structural chemistry of glasses (Amsterdam: Elsevier)
Patnaik J R G and Sunandana C S 1998J. Phys. Chem. Solids 59 1059
Salamon M B 1975Physics of superionic conductors (Berlin: Springer)
Senthil Kumar P, Kini N S, Umarji A M and Sunandana C S 2000 inSolid state ionics: Materials and devices (eds) B V R Chowdari and W Wang (Singapore: World Scientific) pp 121–124
Shastry M C R and Rao K J 1989Solid State Ionics 37 17
Shukla P K and Agrawal S L 1998Solid state ionics: Science and technology (eds) B V R Chowdariet al (Singapore: World Scientific) p. 211
Shukla A K and Sharma V 1992Solid state ionics (eds) S Chandraet al (Singapore: World Scientific) p. 91 and references therein
Suresh Chandra 1981Superionic solids: Principles and applications (Amsterdam: North Holland)
Sunandana C S1995Bull. Mater. Sci. 18 17
Sunandana C S 1997J. Phys. Chem. Solids 58 1359
SunandanaC S 1998Bull. Mater. Sci. 21 1
Sunandana C S and Senthil Kumar P 2003 (in preparation)
Takahashi H 1987J. Phys. Soc. Jpn 56 2520
Tarafdar S 2001Ion conducting materials (eds) A R Kulkarni and P Gopalan (New Delhi: Narosa) p. 1
Uvarov N F 2000Solid state ionics 136–137 1267
Vidyullatha M and Sunandana C S 1993Solid State Commun. 88 553