Enhanced electrochemical performance of carbon-coated Li 2MnSiO4 nanoparticles synthesized by tartaric acid-assisted sol-gel process

Kyung Soo Park; Yun Ho Jin; Lee Seung Kang; Gwang Hee Lee; Nam Hee Lee; Dong Wan Kim; Hyun Seon Hong

doi:10.1016/j.ceramint.2014.02.012

Enhanced electrochemical performance of carbon-coated Li ₂MnSiO₄ nanoparticles synthesized by tartaric acid-assisted sol-gel process

Kyung Soo Park, Yun Ho Jin, Lee Seung Kang, Gwang Hee Lee, Nam Hee Lee, Dong Wan Kim, Hyun Seon Hong

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

5 Citations (Scopus)

Abstract

A tartaric acid-assisted sol-gel process was used to synthesize Li ₂MnSiO₄ (SG-LMS) nanopowders with orthorhombic structures (Pmn2₁ space group). The Li-active SG-LMS nanoparticles were fully surrounded by a conducting amorphous carbon layer/matrix that was formed by carbonization of the tartaric acid during post-annealing of the dry gel. The SG-LMS electrode exhibited higher specific capacity and superior cycle retention as compared to the LMS electrode prepared by a conventional solid-state reaction. Such high electrochemical performance originated from the presence of a high-purity phase, a large surface area, and an efficient electron transport path facilitated by the conductive carbon coating of the SG-LMS electrode.

Original language	English
Pages (from-to)	9413-9418
Number of pages	6
Journal	Ceramics International
Volume	40
Issue number	7 PART A
DOIs	https://doi.org/10.1016/j.ceramint.2014.02.012
Publication status	Published - 2014

Bibliographical note

Funding Information:
This work was supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Trade, Industry & Energy (MOTIE) , Republic of Korea .

Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.

Keywords

A. Sol-gel processes
B. Nanocomposites
D. Silicate
E. Batteries
Electrochemical reactions

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Process Chemistry and Technology
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.ceramint.2014.02.012

Cite this

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title = "Enhanced electrochemical performance of carbon-coated Li 2MnSiO4 nanoparticles synthesized by tartaric acid-assisted sol-gel process",

abstract = "A tartaric acid-assisted sol-gel process was used to synthesize Li 2MnSiO4 (SG-LMS) nanopowders with orthorhombic structures (Pmn21 space group). The Li-active SG-LMS nanoparticles were fully surrounded by a conducting amorphous carbon layer/matrix that was formed by carbonization of the tartaric acid during post-annealing of the dry gel. The SG-LMS electrode exhibited higher specific capacity and superior cycle retention as compared to the LMS electrode prepared by a conventional solid-state reaction. Such high electrochemical performance originated from the presence of a high-purity phase, a large surface area, and an efficient electron transport path facilitated by the conductive carbon coating of the SG-LMS electrode.",

keywords = "A. Sol-gel processes, B. Nanocomposites, D. Silicate, E. Batteries, Electrochemical reactions",

author = "Park, {Kyung Soo} and Jin, {Yun Ho} and Kang, {Lee Seung} and Lee, {Gwang Hee} and Lee, {Nam Hee} and Kim, {Dong Wan} and Hong, {Hyun Seon}",

note = "Funding Information: This work was supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Trade, Industry & Energy (MOTIE) , Republic of Korea . Copyright: Copyright 2014 Elsevier B.V., All rights reserved.",

year = "2014",

doi = "10.1016/j.ceramint.2014.02.012",

language = "English",

volume = "40",

pages = "9413--9418",

journal = "Ceramics International",

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T1 - Enhanced electrochemical performance of carbon-coated Li 2MnSiO4 nanoparticles synthesized by tartaric acid-assisted sol-gel process

AU - Park, Kyung Soo

AU - Jin, Yun Ho

AU - Kang, Lee Seung

AU - Lee, Gwang Hee

AU - Lee, Nam Hee

AU - Kim, Dong Wan

AU - Hong, Hyun Seon

N1 - Funding Information: This work was supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Trade, Industry & Energy (MOTIE) , Republic of Korea . Copyright: Copyright 2014 Elsevier B.V., All rights reserved.

PY - 2014

Y1 - 2014

N2 - A tartaric acid-assisted sol-gel process was used to synthesize Li 2MnSiO4 (SG-LMS) nanopowders with orthorhombic structures (Pmn21 space group). The Li-active SG-LMS nanoparticles were fully surrounded by a conducting amorphous carbon layer/matrix that was formed by carbonization of the tartaric acid during post-annealing of the dry gel. The SG-LMS electrode exhibited higher specific capacity and superior cycle retention as compared to the LMS electrode prepared by a conventional solid-state reaction. Such high electrochemical performance originated from the presence of a high-purity phase, a large surface area, and an efficient electron transport path facilitated by the conductive carbon coating of the SG-LMS electrode.

AB - A tartaric acid-assisted sol-gel process was used to synthesize Li 2MnSiO4 (SG-LMS) nanopowders with orthorhombic structures (Pmn21 space group). The Li-active SG-LMS nanoparticles were fully surrounded by a conducting amorphous carbon layer/matrix that was formed by carbonization of the tartaric acid during post-annealing of the dry gel. The SG-LMS electrode exhibited higher specific capacity and superior cycle retention as compared to the LMS electrode prepared by a conventional solid-state reaction. Such high electrochemical performance originated from the presence of a high-purity phase, a large surface area, and an efficient electron transport path facilitated by the conductive carbon coating of the SG-LMS electrode.

KW - A. Sol-gel processes

KW - B. Nanocomposites

KW - D. Silicate

KW - E. Batteries

KW - Electrochemical reactions

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