caa a22 4500 463211480 CHVBK 20180405153142.0 cr unu---uuuuu 170326e20070901xx s 000 0 eng 10.1007/s00339-007-4020-y doi (NATIONALLICENCE)springer-10.1007/s00339-007-4020-y Lithium ion conduction in lithium metaphosphate based systems [Elektronische Daten] [B.K. Money, K. Hariharan] A comparative investigation on Li+ ion transport has been carried out in various phases of lithium metaphosphate such as (i) crystalline LiPO3, (ii) glassy form as mol % 50Li2O-50P2O5, synthesized by melt-quenching process, (iii) single phase glass-ceramic LiPO3 obtained through controlled heat treatment of mol % 50Li2O-50P2O5 and (iv) newly identified polymer-metal salt complex (PEO)6: LiPO3. All of the above materials have been characterized through XRD, DSC, optical microscopy and impedance spectroscopy techniques. The Li+ ions, migrating with an activation energy value of 1.4eV through "interstitial mechanism” in polycrystalline LiPO3, exhibited a dc conductivity value of 2.5×10-8Scm-1 at 280°C. The above conductivity value was enhanced by four orders of magnitude in Li2O-P2O5 glass, with an activation energy value of 0.72eV. The glass subjected to controlled heat treatment devitrified into single phase glass-ceramic, as revealed by XRD and optical microscopy studies. The glass-ceramic exhibited better conduction characteristics compared to polycrystalline LiPO3. Polycrystalline LiPO3, complexed with polymer PEO has exhibited a conductivity value of 3.1×10-7Scm-1 at 78°C with activation energies of 0.21 and 0.88eV for Li+ ion migration above and below the softening point of the polymer, respectively. Springer-Verlag, 2007 Money B.K. Solid State Ionics Laboratory, Department of Physics, Indian Institute of Technology Madras, 600036, Chennai, India aut Hariharan K. Solid State Ionics Laboratory, Department of Physics, Indian Institute of Technology Madras, 600036, Chennai, India aut Applied Physics A Springer-Verlag 88/4(2007-09-01), 647-652 0947-8396 88:4<647 2007 88 339 https://doi.org/10.1007/s00339-007-4020-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-4020-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Money B.K. Solid State Ionics Laboratory, Department of Physics, Indian Institute of Technology Madras, 600036, Chennai, India aut NATIONALLICENCE 700 1- Hariharan K. Solid State Ionics Laboratory, Department of Physics, Indian Institute of Technology Madras, 600036, Chennai, India aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 88/4(2007-09-01), 647-652 0947-8396 88:4<647 2007 88 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer