TITLE

Nanoparticle iron-phosphate anode material for Li-ion battery

AUTHOR(S)
Dongyeon Son; Eunjin Kim; Tae-Gon Kim; Min Gyu Kim; Jaephil Cho; Byungwoo Park
PUB. DATE
December 2004
SOURCE
Applied Physics Letters;12/13/2004, Vol. 85 Issue 24, p5875
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Nanoparticle crystalline iron phosphates (FePO4·2H2O and FePO4) were synthesized using a (CTAB) surfactant as an anode material for Li rechargeable batteries. The electrochemical properties of the nanoparticle iron phosphates were characterized with a voltage window of 2.4–0 V. A variscite orthorhombic FePO4·2H2O showed a large initial charge capacity of 609 mAh/g. On the other hand, a tridymite triclinic FePO4 exhibited excellent cyclability: the capacity retention up to 30 cycles was ∼80%, from 485 to 375 mAh/g. The iron phosphate anodes exhibited the highest reported capacity, while the cathode LiFePO4 has an ideal capacity of 170 mAh/g.
ACCESSION #
15331881

 

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