High-performance lithium-ion cathode LiMn0.7Fe 0.3PO4/C and the mechanism of performance enhancements through fe substitution

Bo Ding; Pengfei Xiao; Ge Ji; Yue Ma; Li Lu; Jim Yang Lee

doi:10.1021/am403991f

High-performance lithium-ion cathode LiMn_0.7Fe _0.3PO₄/C and the mechanism of performance enhancements through fe substitution

Bo Ding, Pengfei Xiao, Ge Ji, Yue Ma, Li Lu, Jim Yang Lee

National University of Singapore

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

Abstract

LiMn_1-xFe_xPO₄/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 LiMn_0.7Fe_0.3PO₄/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.

Original language	English
Pages (from-to)	12120-12126
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	5
Issue number	22
DOIs	https://doi.org/10.1021/am403991f
State	Published - 27 Nov 2013
Externally published	Yes

Keywords

cathode materials
ion substitution
lithium-ion battery
mechanism
solid-state reaction

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Access to Document

10.1021/am403991f

Cite this

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title = "High-performance lithium-ion cathode LiMn0.7Fe 0.3PO4/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.",

keywords = "cathode materials, ion substitution, lithium-ion battery, mechanism, solid-state reaction",

author = "Bo Ding and Pengfei Xiao and Ge Ji and Yue Ma and Li Lu and Lee, {Jim Yang}",

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doi = "10.1021/am403991f",

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T1 - High-performance lithium-ion cathode LiMn0.7Fe 0.3PO4/C and the mechanism of performance enhancements through fe substitution

AU - Ding, Bo

AU - Xiao, Pengfei

AU - Ji, Ge

AU - Ma, Yue

AU - Lu, Li

AU - Lee, Jim Yang

PY - 2013/11/27

Y1 - 2013/11/27

N2 - 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.

AB - 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.

KW - cathode materials

KW - ion substitution

KW - lithium-ion battery

KW - mechanism

KW - solid-state reaction

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