DEVELOPMENT OF LITHIUM-MANGANESE COMPOSITE OXIDES AS CATHODE MATERIALS FOR LITHIUM-ION BATTERIES.

锂锰复合氧化物作为锂离子电池正极材料的开发。

• 批准号: 06555188
• 负责人: MASAKI Yoshio
• 金额: $ 7.1万
• 依托单位: SAGA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 1994
• 资助国家: 日本
• 起止时间: 1994 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-06555188/
• 关键词: LITHIUM ION BATTERY; CATHODE MATERIAL; MANGANESE; SPINEL STRUCTURE; MELT-IMPREGNATION METHOD; CYCLABILITY; HIGH TEMPERATURE PERFORMANCE; LITHIUM-MANGANESE OXIDE; 負極活物質; グラファイト; リチウム2次電池; 硝酸リチウム; 水酸化リチウム; スピネル

We have developed the preparation procedures of cathode materials (Lithium-Manganese oxides) for lithium-ion batteries by melt-impregnation method developed us. Two types of material, 1) spinel Li_xMn_yO_4 and 2) Li_<0.33>MnO_2, were mainly studied. The obtained important results are as follows ; a) The preparation method (melt-impregnation method) for spinel Li_xMn_yO_4 excellent as cathode in lithium secondary batteries has been established. We found that the oxygen content of spinel Li_xMn_yO_4 was easily controlled by the introduction of nitrogen gas. b) The relation between the spinel formula of Li_xMn_yO_4 and its battery performance is initially clarified. Based on the spinel formula, spinel compounds are divided into two groups, oxygen rich and lithium rich spinel. These words proposed us become popular gradually among battery researchers. c) The mechanism of capacity fading in spinel Li_xMn_yO_4 cathode at room temperature and higher temperature (50>ﾟC) are clarified. d) Lithium-manganese oxide formed at less than 400ﾟC is proofed to be new material, Li_<0.33>MnO_2. The optimum condition for the preparation of it with excellent battery performance is determined.

我们已经开发了我们开发的锂离子电池的阴极材料（锂 - 山基氧化物）的制备程序。两种类型的材料，1）尖晶石li_xmn_yo_4和2）li_ <0.33> mno_2，主要是研究。获得的重要结果如下； a）已经建立了紫oi_xmn_yo_4的制备方法（熔点浸渍法），因为锂二级电池中的阴极非常出色。我们发现，尖晶石Li_xmn_yo_4的氧含量很容易通过氮气的引入来控制。 b）最初阐明了li_xmn_yo_4的尖晶石公式与其电池性能之间的关系。基于尖晶石配方，尖晶石化合物分为两组，富含氧气和富含锂的尖晶石。这些词建议我们在电池研究人员中逐渐流行。 c）在室温和较高温度（50> c）下，尖晶石LI_XMN_YO_4中容量褪色的机理被阐明。 d）在小于400 c形成的锂甲氧化物是新材料的证明，li_ <0.33> mno_2。确定了以出色的电池性能制备它的最佳条件。

项目成果

M.Yoshio, Y.Xia and H.Noguchi: "Dependence of battery performance of spinel Li_<+x>Mn_2O_4 on the preparation method" Material Research Soc.Symp.Proceeding. 393. 91-100 (1995)

M.Yoshio、Y.Xia 和 H.Noguchi：“尖晶石 Li_< x>Mn_2O_4 的电池性能对制备方法的依赖性”材料研究 Soc.Symp.Proceeding。

H.Kurimoto: "High Surface Area Electrolytic Manganese Dioxide for 3V Li-Cell Cathodes" Journal of Electro chemical Society. 142. 2156-2162 (1995)

H.Kurimoto：“用于 3V 锂电池阴极的高表面积电解二氧化锰”电化学学会杂志。

Y.Xia: "Preparation for the spinel compounds by the melt-impregnation method" Progress in Batteries & Battery Materials. Vol.15. 154-160 (1996)

夏勇：“熔融浸渍法制备尖晶石化合物”在电池方面的进展

芳尾真幸: "溶融含浸法によるリチウム電池正極剤の合成III.3V純Li-Mn複酸化物,Li_<0.33>MnO_2の合成" 電気化学. 64. 123-131 (1996)

Masayuki Yoshio：“熔融浸渍法合成锂电池正极材料III.3V纯Li-Mn双氧化物，Li_<0.33>MnO_2”电化学64. 123-131（1996）。

Y.Xia and M.Yoshio: "Characterization of the capacity and rechargeability of spinel compound as a cathode for 4V Li-Cells" Progress in Batteries & Battery Materials. (in press.).

Y.Xia 和 M.Yoshio：“尖晶石化合物作为 4V 锂电池阴极的容量和可充电性的表征”电池进展