Glutamic acid-assisted sol–gel synthesis of multi-doped spinel lithium manganate as cathode materials for lithium rechargeable batteries
IR@CECRI: CSIR-Central Electrochemical Research Institute, Karaikudi
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| Title |
Glutamic acid-assisted sol–gel synthesis of multi-doped spinel lithium manganate as cathode materials for lithium rechargeable batteries
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| Creator |
Thirunakaran, R.
Ravikumar, R. Vanitha, S. Gopukumar, S. Sivashanmugam, A. |
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| Subject |
Lithium batteries
Electrochemical Power Sources |
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| Description |
LiMn2O4 and LiMgxSnyAlzMn2−x−y−zO4 (x, y, z = Mg, Sn, Al) (x = 0.01–0.09; y = 0.04–0.1; z = 0.35–0.20) powders have been synthesized via the sol–gel method for the first time using glutamic acid as the chelating agent. The synthesized samples have been subjected to physical and electrochemical
characterization. SEM images of parent LiMn2O4 show that the majority of the grains are 1 micrometer in size. The LiMg0.01Sn0.04Al0.35Mn1.6O4 and LiMg0.04Sn0.06Al0.30Mn1.6O4 particles present a low degree of agglomeration and the primary particles are 1 micrometer in size. TEM images of the spinel LiMn2O4 and LiMgxSnyAlzMn2−x−y−zO4 ascertain that the synthesized particles are nano-sized with uniform surface morphology. The LiMn2O4 samples calcined at 850 ◦C deliver a discharge capacity of 122 mAh g−1 in the first cycle. Among the compositions investigated, LiMg0.01Sn0.06Al0.30Mn1.6O4 delivers 115 mAh g−1 in the first cycle and exhibits stable cycling performance with a low capacity fade of 1 mAh g−1 cycle−1 over the 10 cycles investigated
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| Publisher |
Elsevier
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| Date |
2011
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cecri.csircentral.net/2888/1/028-2011.pdf
Thirunakaran, R. and Ravikumar, R. and Vanitha, S. and Gopukumar, S. and Sivashanmugam, A. (2011) Glutamic acid-assisted sol–gel synthesis of multi-doped spinel lithium manganate as cathode materials for lithium rechargeable batteries. Electrochimica Acta, 58 (01). pp. 348-358. ISSN 0013-4686 |
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| Relation |
http://cecri.csircentral.net/2888/
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