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Enhanced cycling properties of transition metal molybdates, Li x M2(MoO4)3 {0∈x∈<∈3} [M∈=∈Co,Ni]: A nanocomposite approach for lithium batteries

K.M., Begam and S.R.S., Prabaharan and M.S., Michael (2007) Enhanced cycling properties of transition metal molybdates, Li x M2(MoO4)3 {0∈x∈<∈3} [M∈=∈Co,Ni]: A nanocomposite approach for lithium batteries. Ionics, 13 (6). pp. 467-471. ISSN 9477047

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Abstract

Nanocomposite electrodes of recently identified polyanion cathode materials comprising Li <sub>x</sub> M<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub> {0∈ ∈x∈&lt;∈3} [M∈=∈Co, Ni] and nanosized carbon having ~10 nm particle size were found to show remarkable improvement in their discharge capacity compared to the one prepared with acetylene black. The addition of nanosized carbon as a conductive additive offered improved initial discharge capacity of 121 mAh/g between 3.5-2.0 V vs Li/Li. The cause for such an increase could be firmly attributed to the filling up of the grain-grain contact area of the active material, facilitating the intimate grain-grain contacts in the composite structure leading to enhanced capacity delivery. As for the nanocomposite Li <sub>x</sub> Co<sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub>, it was found that at least 55% of its first discharge capacity was retained at the end of 20th cycle compared to its analogous counterpart, Li <sub>x</sub> Ni <sub>2</sub>(MoO<sub>4</sub>)<sub>3</sub>. © 2007 Springer-Verlag.

Item Type:Article
Uncontrolled Keywords:Carbon black; Composite structures; Electrodes; Nanocomposites; Nickel; Transition metal compounds; Active material; Discharge capacity; Mesoporous carbon black; Nanocomposite electrodes; Polyanion cathode materials; Lithium batteries
Subjects:T Technology > TK Electrical engineering. Electronics Nuclear engineering
Departments / MOR / COE:Departments > Electrical & Electronic Engineering
ID Code:415
Deposited By: Assoc Prof Dr Mumtaj Begam Kasim Rawthar
Deposited On:09 Mar 2010 01:08
Last Modified:19 Jan 2017 08:27

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