Show simple item record

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.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.

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.titleJournal of Alloys and Compounds
curtin.departmentDepartment of Chemical Engineering
curtin.accessStatusFulltext not available

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record