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Jung, Yoon Seok
Electrochemical Solid-State Energy Storage Lab
Research Interests
  • Batteries, All-solid-state batteries, solid electrolytes, electrodes, atomic layer deposition,energy storage devices


Carbon-coated nanoclustered LiMn0.71Fe0.29PO4 cathode for lithium-ion batteries

DC Field Value Language Jo, Minki ko Yoo, HoChun ko Jung, Yoon Seok ko Cho, Jaephil ko 2014-04-10T01:18:33Z - 2013-06-10 ko 2012-10 -
dc.identifier.citation JOURNAL OF POWER SOURCES, v.216, no., pp.162 - 168 ko
dc.identifier.issn 0378-7753 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract Carbon-coated clustered LiMn0.71Fe0.29PO4 (c-LMFP) nanoparticles are prepared from ball-milling with a mixture of similar to 40 nm thick LMFP nanoplates obtained by polyol method and carbon black. The clustered nanocomposite structure of c-LMFP turns out to have advantages of improved volumetric energy density and electrochemical performance. The c-LMFP exhibits increased tap density of 0.9 g cm(-3), compared with the as-prepared LMFP nanoplates (0.6 g cm(-3)), providing with high volumetric discharge capacity of 243 mA h cm(-3) at 0.1C and 128 mA h cm(-3) even at 7C at 21 degrees C. At elevated temperature (60 degrees C), the capacity retention of c-LMFP remains excellent (100% of its initial capacity (165 mA h g(-1)) at the same cycling condition as 21 degrees C). In sharp contrast, capacity of carbon-coated LiMnPO4 (c-LMP) exhibits volumetric discharge capacity of 72 mA h cm(-3) at 5C and decays rapidly at 60 degrees C after 40 cycles (capacity retention of 58%). The better cycling stability of c-LMFP than that of c-LMP is believed to be associated with mitigated Mn2+ dissolution by Fe2+ substitution. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ELSEVIER SCIENCE BV ko
dc.subject Capacity retention ko
dc.subject Carbon coating ko
dc.subject Cycling conditions ko
dc.subject Cycling stability ko
dc.subject Discharge capacities ko
dc.subject Electrochemical performance ko
dc.subject Elevated temperature ko
dc.subject Lithium-ion battery ko
dc.subject Nano-composite structure ko
dc.subject Nanoplates ko
dc.subject Polyol methods ko
dc.subject Sharp contrast ko
dc.subject Tap density ko
dc.subject Volumetric energy densities ko
dc.title Carbon-coated nanoclustered LiMn0.71Fe0.29PO4 cathode for lithium-ion batteries ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84862233185 ko
dc.identifier.wosid 000308335500023 ko
dc.type.rims ART ko
dc.description.wostc 9 *
dc.description.scopustc 8 * 2015-02-28 * 2014-08-19 *
dc.identifier.doi 10.1016/j.jpowsour.2012.05.059 ko
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