The Effect of Carbon Doping on Electrochemical Properties of LiFePO4/C Powders Prepared by Spray Pyrolysis

Kodera, Takayuki; Ogihara, Takashi; Bi, Dong Ying; Ogawa, Daisuke

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Paper Titles

Microstructure Control of Barium Titanate – Potassium Niobate Solid Solution System Ceramics by MPB Engineering and their Piezoelectric Properties, p.89
High-Power Piezoelectric Characteristics of Sr₂Bi₄Ti₅O₁₈-Ca₂Bi₄Ti₅O₁₈-Based Ferroelectric Ceramics, p.93
Single Crystal Synthesis of Cubic Garnet Related-Type Li₇La₃Zr₂O₁₂ by a Self-Flux Method, p.99
Lithium Intercalation Properties of Lithium Tetratitanate Obtained by Nanosheets Process, p.103
The Effect of Carbon Doping on Electrochemical Properties of LiFePO₄/C Powders Prepared by Spray Pyrolysis, p.107
Synthesis and Electrochemical Properties of Al Doped Lithium Manganate Powders by Spray Pyrolysis Using Carbonate Aqueous Solution, p.111
Synthesis and Electrochemical Properties of C/LiMnPO₄ Cathode Materials by Complex Polymerized Method, p.115
Synthesis and Electrochemical Properties of Lithium Titanate Anode Materials Powders by Solid State Reaction of Li and Spherical TiO₂ Powders, p.119
Synthesis and Electrochemical Properties of Hollandite-Type K_XTiO₂, p.123

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Paper Title:

The Effect of Carbon Doping on Electrochemical Properties of LiFePO₄/C Powders Prepared by Spray Pyrolysis

Periodical	Key Engineering Materials (Volume 485)
Main Theme	Electroceramics in Japan XIV
Edited by	Chazono Hirokazu, Fujihara Shinobu, Katayama Keiichi, Masumoto Hiroshi, Mizoguchi Teruyasu, Osada Minoru, Shinozaki Kazuo and Takeda Hiroaki
Pages	107-110
DOI	10.4028/www.scientific.net/KEM.485.107
Citation	Takayuki Kodera et al., 2011, Key Engineering Materials, 485, 107
Online since	July, 2011
Authors	Takayuki Kodera, Dong Ying Bi, Daisuke Ogawa, Takashi Ogihara
Keywords	Carbon, LiFePO₄/C, Lithium Ion Battery, Olivine Structure, Spray Pyrolysis
Price	US$ 28,-

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Abstract

Spherical LiFePO₄/C precursor powders were successfully prepared by spray pyrolysis. Various types of organic compounds such as glycolic acid, malic acid, citric acid, fructose and sucrose were used as carbon sources. X-ray diffraction analysis revealed that the olivine phase was obtained by calcining over 600 °C under an argon (95%)/hydrogen (5%) atmosphere. The particles exhibited a spherical morphology with approximately 1.5 μm. LiFePO₄/C cathode derived from sucrose exhibited higher rechargeable capacity and cycle stability. The rechargeable capacity of LiFePO₄/C cathode was approximately 154 mAh/g at 1 C. 90% of initial discharge capacity was maintained after 100 cycles.