A preliminary investigation into the new class of lithium intercalating LiNiSiO4 cathode material
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
A preliminary investigation into the new class of lithium intercalating LiNiSiO4 cathode material
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| Creator |
Jayaprakash, N.
Kalaiselvi, N. Periasamy, P. |
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| Subject |
Lithium batteries
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| Description |
A unique attempt to exploit silicate chemistry for a possible enhancement of the
electrochemical properties of a lithium ion system via exploration of the novel category lithium
intercalating LiNiSiO4 cathode has been made through the present study. A novel citric acid
assisted modified sol–gel method (CAM sol–gel) has been adopted to synthesize the title
compound with a formation temperature positioned well below 500 ◦C, as derived from thermal
studies. A powder x-ray diffraction (PXRD) pattern evidenced the absence of undesirable peaks
and confirmed the formation of a hexagonal lattice structure with enhanced crystallinity and
phase purity, and the presence of uniformly distributed particles of ∼200 nm size with well
defined grain boundaries is obvious from the scanning electron microscopy (SEM) image of
LiNiSiO4 material. Further, magic angle spinning (MAS) 7Li nuclear magnetic resonance
(NMR) results from LiNiSiO4 confirmed the presence of a layered type of crystal arrangement.
A cyclic voltammetry (CV) study performed on a LiNiSiO4 cathode revealed an excellent
reversibility without any change in the peak position upon extended cycling, thus substantiating
the structural stability upon progressive cycling.
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| Publisher |
IOP Publishing Ltd.
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| Date |
2008
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/441/1/145-2008.pdf
Jayaprakash, N. and Kalaiselvi, N. and Periasamy, P. (2008) A preliminary investigation into the new class of lithium intercalating LiNiSiO4 cathode material. Nanotechnology, 19 (2). ISSN 0957-4484 |
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| Relation |
http://cecri.csircentral.net/441/
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