title: High-performance lithium-ion cathode LiMn(0.7)Fe(0.3)PO(4)/C and the mechanism of performance enhancements through Fe substitution.
abstract: LiMn1-xFexPO4/C (x = 0 and 0.3) with a uniform carbon coating and interspersed carbon particles was prepared by a high-energy ball-milling (HEBM)-assisted solid-state reaction. The as-synthesized LiMn0.7Fe0.3PO4/C delivered an excellent rate performance as a LiMnPO4 class of materials. Specifically, the specific discharge capacity was 164 mAh/g (96% of theoretical value) at the 0.05 C rate and 107 mAh/g at the 5 C rate (1 C = 170 mA/g). Electrochemical impedance spectroscopy (EIS) and galvanostatic intermittent titration technique (GITT) measurements indicated improvements in the transport of electrons and Li(+) as well as the emergence of a single-phase region in lithium extraction and insertion reactions.
authors.affiliation: Center for Life Sciences (CeLS), NUS Graduate School for Integrative Sciences and Engineering (NGS) , #05-01 28 Medical Drive, 117456 Singapore.
authors.forename: Bo
authors.initials: B
authors.lastname: Ding
authors.forename: Pengfei
authors.initials: P
authors.lastname: Xiao
authors.forename: Ge
authors.initials: G
authors.lastname: Ji
authors.forename: Yue
authors.initials: Y
authors.lastname: Ma
authors.forename: Li
authors.initials: L
authors.lastname: Lu
authors.forename: Jim Yang
authors.initials: JY
authors.lastname: Lee