Synthesis and Evaluation of Olivine Material Coated with Carbon

Lithium iron phosphate, LiFePO4, was synthesized by hydrothermal process and subsequently coated with carbon by the thermal decomposition of acetylene gas. The products were characterized by XRD, SEM, and TG-DTA. As-synthesized LiFePO4 was submicron sized plate-like particle. After heating at variou...

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Main Authors: Togo Masakazu, Nakahira Atsushi
Format: Article
Language:English
Published: EDP Sciences 2017-01-01
Series:MATEC Web of Conferences
Online Access:https://doi.org/10.1051/matecconf/201713001001
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author Togo Masakazu
Nakahira Atsushi
author_facet Togo Masakazu
Nakahira Atsushi
author_sort Togo Masakazu
collection DOAJ
description Lithium iron phosphate, LiFePO4, was synthesized by hydrothermal process and subsequently coated with carbon by the thermal decomposition of acetylene gas. The products were characterized by XRD, SEM, and TG-DTA. As-synthesized LiFePO4 was submicron sized plate-like particle. After heating at various temperature in nitrogen atmosphere, the particle size and the crystalline sizes were grown with increasing the heating temperature. Above 700°C, the grain growth was remarkably. Carbon coating temperature was set at 500-600°C because of fine particle and good crystallinity. As a carbon raw material, acetylene gas was flowing to the as-synthesized LiFePO4 in nitrogen atmosphere, and the LiFePO4/C composite was obtained. TG curves showed weight loss above 500°C, which was thought to be associated with carbon layer composition.
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spelling doaj.art-b55b91c2ae004a0ba2c614864d08bd932022-12-21T18:13:31ZengEDP SciencesMATEC Web of Conferences2261-236X2017-01-011300100110.1051/matecconf/201713001001matecconf_cmpse2017_01001Synthesis and Evaluation of Olivine Material Coated with CarbonTogo MasakazuNakahira AtsushiLithium iron phosphate, LiFePO4, was synthesized by hydrothermal process and subsequently coated with carbon by the thermal decomposition of acetylene gas. The products were characterized by XRD, SEM, and TG-DTA. As-synthesized LiFePO4 was submicron sized plate-like particle. After heating at various temperature in nitrogen atmosphere, the particle size and the crystalline sizes were grown with increasing the heating temperature. Above 700°C, the grain growth was remarkably. Carbon coating temperature was set at 500-600°C because of fine particle and good crystallinity. As a carbon raw material, acetylene gas was flowing to the as-synthesized LiFePO4 in nitrogen atmosphere, and the LiFePO4/C composite was obtained. TG curves showed weight loss above 500°C, which was thought to be associated with carbon layer composition.https://doi.org/10.1051/matecconf/201713001001
spellingShingle Togo Masakazu
Nakahira Atsushi
Synthesis and Evaluation of Olivine Material Coated with Carbon
MATEC Web of Conferences
title Synthesis and Evaluation of Olivine Material Coated with Carbon
title_full Synthesis and Evaluation of Olivine Material Coated with Carbon
title_fullStr Synthesis and Evaluation of Olivine Material Coated with Carbon
title_full_unstemmed Synthesis and Evaluation of Olivine Material Coated with Carbon
title_short Synthesis and Evaluation of Olivine Material Coated with Carbon
title_sort synthesis and evaluation of olivine material coated with carbon
url https://doi.org/10.1051/matecconf/201713001001
work_keys_str_mv AT togomasakazu synthesisandevaluationofolivinematerialcoatedwithcarbon
AT nakahiraatsushi synthesisandevaluationofolivinematerialcoatedwithcarbon