Improved high-voltage performance of FePO4-coated LiCoO 2 by microwave-assisted hydrothermal method

Kwang Chun Kim; Jong Pil Jegal; Seong Min Bak; Kwang Chul Roh; Kwang Bum Kim

doi:10.1016/j.elecom.2014.03.017

Improved high-voltage performance of FePO₄-coated LiCoO ₂ by microwave-assisted hydrothermal method

Kwang Chun Kim, Jong Pil Jegal, Seong Min Bak, Kwang Chul Roh, Kwang Bum Kim

Department of Materials Science and Engineering

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

32 Citations (Scopus)

Abstract

The generation of hot spots on the surface of LiCoO₂ by microwave-induced selective heating is shown to facilitate a uniform hydrothermal coating of FePO₄. This is achieved by heterogeneous nucleation of FePO₄ in the bulk solution, with the resulting coating layer found to be highly conformal. Furthermore, morphology of the LiCoO ₂ is preserved with no aggregation of the FePO₄ nanoparticles. This FePO₄-coated LiCoO₂ exhibits markedly improved capacity retention of over 92% under a high charge voltage cutoff of 4.7 V, even after 50 cycles.

Original language	English
Pages (from-to)	113-116
Number of pages	4
Journal	Electrochemistry Communications
Volume	43
DOIs	https://doi.org/10.1016/j.elecom.2014.03.017
Publication status	Published - 2014 Jun

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation (NRF) of Korea Grant funded by the Korean Government (MSIP) ( NRF-2011-0030542 ).

All Science Journal Classification (ASJC) codes

Electrochemistry

Access to Document

10.1016/j.elecom.2014.03.017

Cite this

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title = "Improved high-voltage performance of FePO4-coated LiCoO 2 by microwave-assisted hydrothermal method",

abstract = "The generation of hot spots on the surface of LiCoO2 by microwave-induced selective heating is shown to facilitate a uniform hydrothermal coating of FePO4. This is achieved by heterogeneous nucleation of FePO4 in the bulk solution, with the resulting coating layer found to be highly conformal. Furthermore, morphology of the LiCoO 2 is preserved with no aggregation of the FePO4 nanoparticles. This FePO4-coated LiCoO2 exhibits markedly improved capacity retention of over 92% under a high charge voltage cutoff of 4.7 V, even after 50 cycles.",

author = "Kim, {Kwang Chun} and Jegal, {Jong Pil} and Bak, {Seong Min} and Roh, {Kwang Chul} and Kim, {Kwang Bum}",

note = "Funding Information: This work was supported by the National Research Foundation (NRF) of Korea Grant funded by the Korean Government (MSIP) ( NRF-2011-0030542 ).",

year = "2014",

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doi = "10.1016/j.elecom.2014.03.017",

language = "English",

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AU - Kim, Kwang Chun

AU - Jegal, Jong Pil

AU - Bak, Seong Min

AU - Roh, Kwang Chul

AU - Kim, Kwang Bum

N1 - Funding Information: This work was supported by the National Research Foundation (NRF) of Korea Grant funded by the Korean Government (MSIP) ( NRF-2011-0030542 ).

PY - 2014/6

Y1 - 2014/6

N2 - The generation of hot spots on the surface of LiCoO2 by microwave-induced selective heating is shown to facilitate a uniform hydrothermal coating of FePO4. This is achieved by heterogeneous nucleation of FePO4 in the bulk solution, with the resulting coating layer found to be highly conformal. Furthermore, morphology of the LiCoO 2 is preserved with no aggregation of the FePO4 nanoparticles. This FePO4-coated LiCoO2 exhibits markedly improved capacity retention of over 92% under a high charge voltage cutoff of 4.7 V, even after 50 cycles.

AB - The generation of hot spots on the surface of LiCoO2 by microwave-induced selective heating is shown to facilitate a uniform hydrothermal coating of FePO4. This is achieved by heterogeneous nucleation of FePO4 in the bulk solution, with the resulting coating layer found to be highly conformal. Furthermore, morphology of the LiCoO 2 is preserved with no aggregation of the FePO4 nanoparticles. This FePO4-coated LiCoO2 exhibits markedly improved capacity retention of over 92% under a high charge voltage cutoff of 4.7 V, even after 50 cycles.

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