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dc.contributor.authorWang, Y.
dc.contributor.authorZhang, D.
dc.contributor.authorYu, X.
dc.contributor.authorCai, R.
dc.contributor.authorShao, Zongping
dc.contributor.authorLiao, X.
dc.contributor.authorMa, Z.
dc.date.accessioned2017-01-30T12:39:11Z
dc.date.available2017-01-30T12:39:11Z
dc.date.created2016-09-12T08:36:55Z
dc.date.issued2010
dc.identifier.citationWang, Y. and Zhang, D. and Yu, X. and Cai, R. and Shao, Z. and Liao, X. and Ma, Z. 2010. Mechanoactivation-assisted synthesis and electrochemical characterization of manganese lightly doped LiFePO<inf>4</inf>. Journal of Alloys and Compounds. 492 (1-2): pp. 675-680.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/23786
dc.identifier.doi10.1016/j.jallcom.2009.12.014
dc.description.abstract

Olivine compounds LiFe1-xMnxPO4 (0.0 = x = 0.3) for cathodes of secondary lithium-ion batteries were synthesized via a mechanoactivation-assisted solid-state reaction. The optimal manganese content and electrochemical performance of the as-synthesized powders were investigated by XRD, EDX mapping, cyclic voltammetry, and charge-discharge characterizations. According to XRD and EDX mapping results, phase-pure compounds with olivine structure were formed after the calcination under nitrogen atmosphere at 700 °C for 20 h. Among the various LiFe1-xMnxPO4 under test, LiFe0.8Mn0.2PO4 showed the highest electrical conductivity, which reached a value of 3.49 × 10-5 S cm-1 at room temperature, more than 5 orders higher than that of pristine LiFePO4 (1.08 × 10-10 S cm-1). Without the carbon coating, pristine LiFe0.8Mn0.2PO4 showed discharge capacity of ~123 and 100 mAh g-1 at 0.1 and 1 C rates, respectively. It means about 91% and 74% of the Fe2+ in LiFe0.8Mn0.2PO4 is electrochemically utilizable correspondingly. For a comparison, they are only 65% and 15% for the pristine LiFePO4 prepared by a similar process. LiFe1-xMnxPO4 also showed stable cycling performance within the 50 cycles under test. It suggests manganese lightly doped LiFePO4 could be practical cathode materials for high-rate lithium-ion batteries. © 2009 Elsevier B.V. All rights reserved.

dc.publisherElsevier B.V.
dc.titleMechanoactivation-assisted synthesis and electrochemical characterization of manganese lightly doped LiFePO<inf>4</inf>
dc.typeJournal Article
dcterms.source.volume492
dcterms.source.number1-2
dcterms.source.startPage675
dcterms.source.endPage680
dcterms.source.issn0925-8388
dcterms.source.titleJournal of Alloys and Compounds
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available


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