Li mobility in the battery cathode material Li-x[Mn1.96Li0.04]O-4 studied by muon-spin relaxation

Authors
Kaiser, CT Verhoeven, VWJ Gubbens, PCM Mulder, FM de Schepper, I Yaouanc, A de Reotier, PD Cottrell, SP Kelder, EM Schoonman, J
Citation
Ct. Kaiser et al., Li mobility in the battery cathode material Li-x[Mn1.96Li0.04]O-4 studied by muon-spin relaxation, PHYS REV B, 62(14), 2000, pp. R9236-R9239
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
14
Year of publication
2000
Pages
R9236 - R9239
Database
ISI
SICI code
0163-1829(20001001)62:14<R9236:LMITBC>2.0.ZU;2-K
Abstract
The battery cathode materials Li-x[Mn1.96Li0.04]O-4 with x=1 and 0.2 were s tudied by the zero-field muon-spin-relaxation technique. Both materials hav e a magnetic transition below T(M)similar or equal to 25 K. At high tempera ture, above T=230 K, a large decrease of the width of the static field dist ribution at the muon site is found for Li[Mn1.96Li0.04]O-4, providing proof of the onset of mobility of Li+ ions in the microsecond time range. On the other hand, in Li-0.2[Mn1.96Li0.04]O-4 the onset of mobility of Li+ ions o ccurs only for T>300 K, i.e., just above room temperature.