Nickel doped spinel lithium manganate – some insights using opto-impedance
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
View Archive Info| Field | Value | |
| Title |
Nickel doped spinel lithium manganate – some insights using opto-impedance
|
|
| Creator |
Ragavendran, K.
Nakkiran, A. Kalyani, P. Veluchamy, A. Jagannathan, R. |
|
| Subject |
Lithium batteries
Electrochemical Materials Science |
|
| Description |
Opto-impedance studies on spinel type pristine and Ni-doped LiMn2O4, an important cathode system for
Li-ion batteries have revealed the difference in electronic structure arising out of the Ni-substitution. The
opto-impedance spectra of Ni-doped LiMn2O4 even under dark condition exhibits a more complex structure(
two semicircles with some skewed structure) suggesting the presence of defect structure(s) remaining
dormant which upon UV shining get merged to form a single semicircle. Qualitatively this aliovalent
substitution modifies the charge transfer state and activates a defect initiated Warburg diffusion process
with a time scale of � 50 ls.
|
|
| Publisher |
Elsevier B.V.
|
|
| Date |
2008
|
|
| Type |
Article
PeerReviewed |
|
| Format |
application/pdf
|
|
| Identifier |
http://cecri.csircentral.net/47/1/016-2008.pdf
Ragavendran, K. and Nakkiran, A. and Kalyani, P. and Veluchamy, A. and Jagannathan, R. (2008) Nickel doped spinel lithium manganate – some insights using opto-impedance. Chemical Physics Letters, 456 (1-3). pp. 110-115. |
|
| Relation |
http://cecri.csircentral.net/47/
|
|