Large-Scale Synthesis and Electrochemical Properties of LiAlXMn2-XO4 Powders by Internal Combustion Type Spray Pyrolysis Apparatus Using Gas Burner

Mukoyama, Izumi; Myoujin, Kenichi; Ogihara, Takashi; Uede, Masao; Ozawa, Hironori; Ozawa, Kazunori

doi:10.4028/www.scientific.net/KEM.320.251

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Growth and Electric Properties of Al-Substituted Langasite-Type La₃Ta_0.5Ga_5.5O₁₄ Crystals at High Temperature
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Oxygen Reduction Electrode Properties of Perovskite-Related Oxides Sr(Fe,Co,Ru)O_3-δ at Low Temperatures
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Oxygen Reduction Electrode Properties of the Ba(Ce,Gd,Ru) O_3-δ Oxides at Low Temperatures
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Synthesis and Characterization of Li(Ni_1/3Mn_1/3Co_1/3)O₂ Nano-Particle by Aerosol Plasma Pyrolysis
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Home Key Engineering Materials Electroceramics in Japan IXLarge-Scale Synthesis and Electrochemical...

Large-Scale Synthesis and Electrochemical Properties of LiAl_XMn_2-XO₄ Powders by Internal Combustion Type Spray Pyrolysis Apparatus Using Gas Burner

Abstract:

Spherical LiAlxMn2-xO4 fine powders were continuously produced by Internal Combustion Type Spray Pyrolysis Apparatus Using Gas Burner from metal nitrate precursor solutions. XRD showed that LiAlxMn2-xO4 powders were well crystallized in a spinel structure with the Fd3m space group. As-prepared powders have a spherical particle shape with a diameter of 2.3 μm. As-prepared samples were calcined at 800 for 10 h in air. The charge/discharge capacity of LiAlxMn2-xO4 was over 100 mAh/g. A powder production capacity speed of 1 kg/h was attained by this system.

Info:

Periodical:

Key Engineering Materials (Volume 320)

Main Theme:

Electroceramics in Japan IX

Edited by:

Keiichi Katayama, Kazumi Kato, Tadashi Takenaka, Masasuke Takata and Kazuo Shinozaki

Pages:

251-254

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.320.251

Citation:

I. Mukoyama et al., "Large-Scale Synthesis and Electrochemical Properties of LiAl_XMn_2-XO₄ Powders by Internal Combustion Type Spray Pyrolysis Apparatus Using Gas Burner ", Key Engineering Materials, Vol. 320, pp. 251-254, 2006

Online since:

September 2006

Authors:

Izumi Mukoyama, Kenichi Myoujin, Takashi Ogihara, Masao Uede, Hironori Ozawa, Kazunori Ozawa

Keywords:

Battery, Lithium Manganese, Precursor, Spinel, Spray Pyrolysis

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Paper TitlePages

Synthesis of Mixed Conducting Oxides SrFeCo_0.5O_y Powder by Citrate Method

Authors: Zhi Jun Xu, Rui Qing Chu, S.C. Cui, Jin Son Zhang

Abstract: Mixed-conducting ceramic oxide SrFeCo0.5Oy powders were prepared by a citrate method, and the contributing factors to the formation of homogeneous fine powder with a pure perovskite-type structure were ascertained. The resulting powder is pure, homogeneous and possesses a reasonably fine particle size. Attempts were made to understand the synthesis process and it was confirmed that the method produces powder had greater composition uniformity, lower residual carbonate levels and smaller particle sizes.

971

Lithium Battery Properties of LiNi_0.5Mn_1.5O₄ Powders Synthesized by Internal Combustion Type Spray Pyrolysis Apparatus Using Gas Burner

Authors: Izumi Mukoyama, Kenichi Myoujin, Takahiro Nakamura, Hironori Ozawa, Takashi Ogihara, Masao Uede

Abstract: Spherical LiNi0.5Mn1.5O4 powders were prepared by internal combustion type spray pyrolysis apparatus using gas burner. The powder production capacity was 1 kg/h by this equipment. After calcinations of as-prepared powders contained Ni at different temperatures from 800 to 1200 °C in air for 10h, LiNi0.5Mn1.5O4 powders were obtained. As-prepared particles have a porous microstructure with an average diameter of about 5 μm with narrow size distribution. XRD showed that LiNi0.5Mn1.5O4 powders were well crystallized to a spinel structure with Fd3m space group. LiNi0.5Mn1.5O4 powders calcined at 1000°C show good cycle performance with after 30 cycles discharge capacity of 112mAh/g and 95% retention after 400 cycles between 3.5 V and 5 V.

191

Electrochemical Performance of LiFePO₄/C Positive-Electrode Material Prepared via a Rheological Phase Method

Authors: Jian He Hong, Chun Fang Bai, Gang He, Ming Zhong He, Hai Feng Li, Xin Yan Sun, Yan Fen Wang

Abstract: Positive-electrode material LiFePO₄/C was prepared using FePO₄•2H₂O as raw material via a rheological phase method. Orthogonal experiment was designed to systematically investigate the effects of the ratio of raw materials, calcining temperature and holding time on the morphology and electrochemical performance of LiFePO₄/C. The results showed that the optimal parameters were as follows: synthesis temperature 650 °C, time 10 h. The sample prepared with optimal parameters showed discharge capacities of 147.5 mAh•g^-1 at 0.2 C and 133.7 mAh•g^-1 at 1 C rate, with good cycle performance.

1689

Synthesis of Li₄Ti₅O₁₂ Anode Material for Lithium-Ion Batteries

Authors: Sheng Lin Liu, Xiu Juan Zhao, Rui Ming Ren

Abstract: Li₄Ti₅O₁₂ spinel-type anode materials were synthesized by high-energy ball milling and solid-state method using TiO₂ (Anatase) and Li₂CO₃ as starting materials. The powders were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), thermo-gravimetric (TG)/differential scanning calorimetric (DSC). The results showed that Li₄Ti₅O₁₂ in a single phase can be fabricated above 750 °C for 3h when the mixture powders were high-energy ball milled at 500r/m for 30min. The grain size was 0.3-0.5 m and particle size distribution was narrow.

369

Effect of Calcination Temperature on Phase Transformation and Microstructure of Al₂O₃/GdAlO₃ Compound Powder Prepared by Co-Precipitation Method

Authors: Shuai Sun, Qiang Xu

Abstract: A Coprecipitation Method Was Applied to Synthesize Al₂O₃/GdAlO₃ Compound Powder, Using Ammonia as the Precipitator. Gadolinium Oxide and Aluminium Nitrate Were Used as the Raw Materials with the Eutectic Ratio( 77 mol% Al ³⁺ – 23 mol% Gd ³⁺ ). the Precursor Was Calcined at Different Temperatures from 1200 to 1600 °C. the Phase Identifications at Different Temperatures Were Characterized by X-ray Diffractometry (XRD). the Growth Morphology of Particles Were Investigated Using Field Emission Electro Microscopy (FE-SEM). the Results Reveal that GdAlO₃ Crystallized Earlier than α-Al₂O₃. the Diffraction Peaks of α-Al₂O₃ Phase Were Observed after Calcination at 1300°C for 1 H. Metastable Phase Gd₃Al₅O₁₂ Underwent Complete Decomposition at 1600°C for 1 H. Gadolinium Aluminate and α-Al₂O₃ Showed Different Growth Mechanism during the Calcination Process. the Average Grain Size of the Calcined Powder Increased from ~40 to ~900 Nm as the Calcination Temperature Increased from 1200 to 1600 °C.

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