权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Application of the High Electronic Conductivity Double Oxide to Cathode Active Material in Battery

高电子导电率双氧化物在电池正极活性材料中的应用

基本信息

批准号：
10650827
负责人：
ESAKA Takao
金额：
$ 1.73万
依托单位：
TOTTORI UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650827/
关键词：
Perovskite Oxide Electric conductor Ceramics Cathode material Battery 電池

项目摘要

In order to check the application of high conductivity oxide ceramics to cathode active materials in batteries, the cathodic behaviors were investigated as to the several types of substituted oxide ceramics based on CaMnOィイD23-δィエD2 in alkaline solutions. As a result, it was found that some oxides, the Ca-sites of which were substituted by rare earth element, show high electronic conductivity of more than 10ィイD11ィエD1 S cmィイD1-1ィエD1 at room temperature even in the sintered porous state and the ceramics work as the cathode active materials without any conductive additives. The discharge performance changes depending on the kind of rare earth element and alkaline solution, and the way of the substitution. The highest discharge capacity is 225 mAh gィイD1-1ィエD1 (810 C gィイD1-1ィエD1) for the x=0.1 sample of CaィイD21-xィエD2LaィイD22x/3ィエD2MnOィイD23-δィエD2 in 5% LiOH solution.The sintered ceramic CaィイD20.9ィエD2LaィイD20.1ィエD2MnOィイD23-δィエD2 also showed the cathode active material properties of batteries without conductive powder such as graphite in some saline solutions including chloride ions. The discharge capacity changed depending on the kind and the concentration of saline solutions. The discharge capacity obtained in 15%LiCl solution (670 C gィイD1-1ィエD1), which corresponded to that manganese in the oxide was reduced partly from MnィイD14+ィエD1 to MnィイD12+ィエD1. This discharge capacity was almost comparable to that of electrolytic MnOィイD22ィエD2 including the conductive material such as graphite.In the system Ca-Fe-O, CaFeOィイD23-δィエD2 was not obtained by the ordinary sintering method. On the other hand, SrFeOィイD23-δィエD2 was able to be prepared, which had a little lower discharge property than CaィイD20.9ィエD2LaィイD20.1ィエD2MnOィイD23-δィエD2 but showed the possibility to be employed as a cathode material in rechargeable battery

为了验证高电导率氧化物陶瓷在电池正极活性材料中的应用，研究了几种基于CaMnOィイD23-δエD2的替代氧化物陶瓷在碱性溶液中的阴极行为。结果发现，一些Ca位点被稀土元素取代的氧化物，即使在烧结多孔状态下，在室温下也表现出超过10ィイD11ィエD1 S cmィイD1-1ィエD1的高电子电导率，并且陶瓷在没有任何导电添加剂的情况下可用作正极活性材料。放电性能根据稀土元素和碱性溶液的种类以及替代方式而变化。 CaィイD21-xィエD2LaィイD22x/3ィエD2MnOィイD23-δィエD2的x=0.1样品的最高放电容量为225 mAh gィイD1-1ィエD1（810 C gィイD1-1ィエD1） 5% LiOH溶液.烧结陶瓷 CaィイD20.9ィエD2LaィイD20.1ィエD2MnOィイD23-δィエD2还显示了在一些含氯离子的盐溶液中不含石墨等导电粉末的电池的正极活性材料特性。放电容量根据盐溶液的种类和浓度而变化。在15%LiCl溶液（670℃gィイD1-1ィエD1）中获得的放电容量，对应于氧化物中的锰从MnィイD14+ィエD1部分还原为MnィイD12+ィエD1。该放电容量几乎与包含石墨等导电材料的电解MnOィイD22ィエD2相当。在Ca-Fe-O体系中，CaFeOィイD23-δィエD2不是通过普通烧结方法获得的。另一方面，能够制备SrFeOィイD23-δィエD2，其放电性能比CaィイD20.9ィエD2LaィイD20.1ィエD2MnOィイD23-δィエD2稍低，但显示出用作可充电电池正极材料的可能性