Ionothermal synthesis and electrochemical analysis of Fe doped LiMnPO sub(4)/C composites as cathode materials for lithium-ion batteries

Shuttle shaped and Fe doped LiMnPO sub(4) particles are successfully synthesized via an ionothermal routine in 1-ethyl-3-methylimidazolium trifluoromethanesulfonate [EMIM]OTf and 1-buty-3-methylimidazolium trifluoromethanesulfonate [BMIM]OTf at 260 [degrees]C, respectively. And then, the carbon coat...

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Veröffentlicht in:Journal of alloys and compounds 2014-11, Vol.614, p.7-12
Hauptverfasser: Li, Xueliang, Liu, Shuai, Jin, Hongchang, Meng, Yu, Liu, Yunfu
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container_issue
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container_title Journal of alloys and compounds
container_volume 614
creator Li, Xueliang
Liu, Shuai
Jin, Hongchang
Meng, Yu
Liu, Yunfu
description Shuttle shaped and Fe doped LiMnPO sub(4) particles are successfully synthesized via an ionothermal routine in 1-ethyl-3-methylimidazolium trifluoromethanesulfonate [EMIM]OTf and 1-buty-3-methylimidazolium trifluoromethanesulfonate [BMIM]OTf at 260 [degrees]C, respectively. And then, the carbon coated product of cathode materials can be efficiently prepared by a subsequent short calcination process. Scanning electron microscopy and field emission transmission electron microscopy shows that these as-prepared particles with the mean width of about 200 nm and length of 800 nm were coated by uniform carbon layers, which could improve the electronic conductivity of the final product effectively. The D sub(Li) values of samples that prepared in two ionic liquids above were calculated to be 1.36 x 10 super(-13) and 4.61 x 10 super(-14) cm super(2) s super(-1), respectively. It can be attributed to the LiMn sub(0.95)Fe sub(0.05)PO sub(4)/C particles prepared in [BMIM]OTf present more uniform distribution and smaller size. Thus, it deliver high discharge capacities of 159.2, 146.0, 135.1, 125.3, 115.5 and 84.4 mA h g super(-1) in the voltage range of 2.5-4.5 V at charge-discharge rate of 0.1, 0.2, 0.5, 1, 2 and 5 C, respectively.
doi_str_mv 10.1016/j.jallcom.2014.06.085
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Thus, it deliver high discharge capacities of 159.2, 146.0, 135.1, 125.3, 115.5 and 84.4 mA h g super(-1) in the voltage range of 2.5-4.5 V at charge-discharge rate of 0.1, 0.2, 0.5, 1, 2 and 5 C, respectively.</description><identifier>ISSN: 0925-8388</identifier><identifier>DOI: 10.1016/j.jallcom.2014.06.085</identifier><language>eng</language><subject>Carbon ; Cathodes ; Coating effects ; Electronics ; Field emission ; Iron ; Lithium-ion batteries ; Particulate composites ; Scanning electron microscopy</subject><ispartof>Journal of alloys and compounds, 2014-11, Vol.614, p.7-12</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,27929,27930</link.rule.ids></links><search><creatorcontrib>Li, Xueliang</creatorcontrib><creatorcontrib>Liu, Shuai</creatorcontrib><creatorcontrib>Jin, Hongchang</creatorcontrib><creatorcontrib>Meng, Yu</creatorcontrib><creatorcontrib>Liu, Yunfu</creatorcontrib><title>Ionothermal synthesis and electrochemical analysis of Fe doped LiMnPO sub(4)/C composites as cathode materials for lithium-ion batteries</title><title>Journal of alloys and compounds</title><description>Shuttle shaped and Fe doped LiMnPO sub(4) particles are successfully synthesized via an ionothermal routine in 1-ethyl-3-methylimidazolium trifluoromethanesulfonate [EMIM]OTf and 1-buty-3-methylimidazolium trifluoromethanesulfonate [BMIM]OTf at 260 [degrees]C, respectively. 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subjects Carbon
Cathodes
Coating effects
Electronics
Field emission
Iron
Lithium-ion batteries
Particulate composites
Scanning electron microscopy
title Ionothermal synthesis and electrochemical analysis of Fe doped LiMnPO sub(4)/C composites as cathode materials for lithium-ion batteries
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