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나노입자 연구단
나노입자 연구단
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Size-selective synthesis of mesoporous LiFePO4/C microspheres based on nucleation and growth rate control of primary particles

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Title
Size-selective synthesis of mesoporous LiFePO4/C microspheres based on nucleation and growth rate control of primary particles
Author(s)
Cho, Min-Young; Kim, Haegyeom; Kim, Hyungsub; Lim, Young Su; Kim, Kwang-Bum; Lee, Jae-Won; Kisuk Kang; Roh, Kwang Chul
Publication Date
2014-04
Journal
JOURNAL OF MATERIALS CHEMISTRY A, v.2, no.16, pp.5922 - 5927
Publisher
ROYAL SOC CHEMISTRYROYAL SOC CHEMISTRY
Abstract
Because of the on-going miniaturization of devices powered by lithium-ion batteries, the realization of a high tap density that sustains a high power output is crucial to enhancing the low intrinsic volumetric energy density of LiFePO4 (LFP), one of the most extensively studied cathode materials. To increase the tap density of LFP, we report a synthetic method that allows microscale size control of a LiFePO4 precursor with a mesoporous structure based on changes in the chemical potential and nucleation and growth rates by surfactant addition. The carbon-coated LiFePO4 particles prepared from the precursors had diameters and tap densities in the range of 3-7 μm and 1.3-1.5 g cm-3, respectively, depending on the surfactant concentration. The particles exhibited negligible antisite defects (approximately 2%) and showed a high volumetric capacity of approximately 190 mA h cm-3 at a 0.1 C-rate and an excellent rate performance of 80 mA h g-1 at a 30 C-rate. © the Partner Organisations 2014.
URI
https://pr.ibs.re.kr/handle/8788114/1058
ISSN
2050-7488
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
439. Size-selective synthesis of mesoporous LiFePO4C microspheres based on nucleation and growth rate control of primary particles.pdfDownload

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