Facile preparation of monolithic LiFePO4/carbon composites with well-defined macropores for a lithium-ion battery

George Hasegawa; Yuya Ishihara; Kazuyoshi Kanamori; Kohei Miyazaki; Yuki Yamada; Kazuki Nakanishi; Takeshi Abe

doi:10.1021/cm2021438

Facile preparation of monolithic LiFePO₄/carbon composites with well-defined macropores for a lithium-ion battery

George Hasegawa, Yuya Ishihara, Kazuyoshi Kanamori, Kohei Miyazaki, Yuki Yamada, Kazuki Nakanishi, Takeshi Abe

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

81 Citations (Scopus)

Abstract

A novel and facile method for the preparation of monolithic LiFePO ₄/carbon composites with well-defined macropores has been developed. The precursor macroporous gels consisting of inorganic networks as well as organic polymers were fabricated by the epoxide-mediated sol-gel method accompanied by phase separation. The inorganic-organic hybrid gels were calcined under an inert atmosphere, resulting in LiFePO₄/carbon monoliths. The influence of the starting compositions on the gel morphologies has been investigated, and the constituents of the gel network were discussed. The reaction mechanism of the crystallization of LiFePO₄ from green bodies during calcination has also been investigated by thermal analysis, X-ray diffraction, and Raman scattering. In addition, the electrochemical properties of the resultant LiFePO₄/carbon composites were examined by the charge-discharge test.

Original language	English
Pages (from-to)	5208-5216
Number of pages	9
Journal	Chemistry of Materials
Volume	23
Issue number	23
DOIs	https://doi.org/10.1021/cm2021438
Publication status	Published - Dec 13 2011
Externally published	Yes

All Science Journal Classification (ASJC) codes

Chemistry(all)
Chemical Engineering(all)
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/cm2021438

Cite this

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abstract = "A novel and facile method for the preparation of monolithic LiFePO 4/carbon composites with well-defined macropores has been developed. The precursor macroporous gels consisting of inorganic networks as well as organic polymers were fabricated by the epoxide-mediated sol-gel method accompanied by phase separation. The inorganic-organic hybrid gels were calcined under an inert atmosphere, resulting in LiFePO4/carbon monoliths. The influence of the starting compositions on the gel morphologies has been investigated, and the constituents of the gel network were discussed. The reaction mechanism of the crystallization of LiFePO4 from green bodies during calcination has also been investigated by thermal analysis, X-ray diffraction, and Raman scattering. In addition, the electrochemical properties of the resultant LiFePO4/carbon composites were examined by the charge-discharge test.",

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AU - Hasegawa, George

AU - Ishihara, Yuya

AU - Kanamori, Kazuyoshi

AU - Miyazaki, Kohei

AU - Yamada, Yuki

AU - Nakanishi, Kazuki

AU - Abe, Takeshi

PY - 2011/12/13

Y1 - 2011/12/13

N2 - A novel and facile method for the preparation of monolithic LiFePO 4/carbon composites with well-defined macropores has been developed. The precursor macroporous gels consisting of inorganic networks as well as organic polymers were fabricated by the epoxide-mediated sol-gel method accompanied by phase separation. The inorganic-organic hybrid gels were calcined under an inert atmosphere, resulting in LiFePO4/carbon monoliths. The influence of the starting compositions on the gel morphologies has been investigated, and the constituents of the gel network were discussed. The reaction mechanism of the crystallization of LiFePO4 from green bodies during calcination has also been investigated by thermal analysis, X-ray diffraction, and Raman scattering. In addition, the electrochemical properties of the resultant LiFePO4/carbon composites were examined by the charge-discharge test.

AB - A novel and facile method for the preparation of monolithic LiFePO 4/carbon composites with well-defined macropores has been developed. The precursor macroporous gels consisting of inorganic networks as well as organic polymers were fabricated by the epoxide-mediated sol-gel method accompanied by phase separation. The inorganic-organic hybrid gels were calcined under an inert atmosphere, resulting in LiFePO4/carbon monoliths. The influence of the starting compositions on the gel morphologies has been investigated, and the constituents of the gel network were discussed. The reaction mechanism of the crystallization of LiFePO4 from green bodies during calcination has also been investigated by thermal analysis, X-ray diffraction, and Raman scattering. In addition, the electrochemical properties of the resultant LiFePO4/carbon composites were examined by the charge-discharge test.

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