Synthesis, characterization, and cell performance of LiNiVO4 cathode materials prepared by a new solution precipitation method

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題名:	Synthesis, characterization, and cell performance of LiNiVO4 cathode materials prepared by a new solution precipitation method
作者:	Fey,GTK;Chen,KS
貢獻者:	化學工程與材料工程學系
關鍵詞:	LITHIUM CELLS;LIMN2O4;INTERCALATION;STOICHIOMETRY;TEMPERATURE
日期:	1999
上傳時間:	2010-06-29 17:29:13 (UTC+8)
出版者:	中央大學
摘要:	LiNiVO4 was prepared by a new solution precipitation process using acetylacetonate as a reagent. The effects of pH value on the purity, grain size, lithium stoichiometry, and cycling behavior of LiNiVO4 were studied. Solution precipitation performed in an acidic medium of pH = 3 with heat-treatment at 450 degrees C for 12 h yielded pure and fine LiNiVO4 powders which showed lithium stoichiometry of 0.971 and narrow grain-size of 0.34 mu m. Under neutral and basic conditions, the LiNiVO4 particles were contaminated with NiO and formed aggregates with a larger grain size in the 0.36-0.54 mu m range. The resulting LiNiVO4 powders were characterized by TGA, XRD, ICP-AES, SEM, and AFM techniques. Moreover, the cycle behavior of LiNiVO4 products synthesized by a high temperature solid state method and this new solution precipitation method was compared and discussed. (C) 1999 Elsevier Science S.A. All rights reserved.
關聯:	JOURNAL OF POWER SOURCES
顯示於類別:	[化學工程與材料工程研究所] 期刊論文

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