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Influence of isovalent ion substitution on the electrochemical performance of LiCoPO4
M. V.V.M.Satya Kishore,
Published in
2005
Volume: 40
   
Issue: 10
Pages: 1705 - 1712
Abstract
LiCo1-xMxPO4 (M = Mg2+, Mn 2+ and Ni2+; 0 ≤ x ≤ 0.2) compounds have been synthesized by solid-state reaction method and studied as cathode materials for secondary lithium batteries. LiCoPO4 exhibits a discharge plateau at ∼4.7 V with an initial discharge capacity of 125 mAh/g and on cycling capacity falls. Substitution of Co2+ with Mg2+/Mn 2+/Ni2+ in LiCoPO4 has an influence on the initial discharge capacity and on cycling behaviour. The capacity retention of LiCoPO4 is improved by manganese substitution. Among the manganese substituted phases, LiCo0.95Mn0.05PO4 shows good reversible capacity of ∼50 mAh/g. © 2005 Elsevier Ltd. All rights reserved.
About the journal
JournalMaterials Research Bulletin
ISSN00255408
Open AccessNo
Concepts (15)
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    Cathodes
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    Electric discharges
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    Electrochemistry
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    Lithium batteries
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    Manganese
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    Positive ions
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    Secondary batteries
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    Substitution reactions
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    Synthesis (chemical)
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    X ray diffraction
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    CYCLING CAPACITY
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    ELECTROCHEMICAL MEASUREMENTS
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    Electrochemical properties
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    Solid-state reactions
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    Lithium compounds