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

为了检查高电导率氧化陶瓷在电池中的阴极活性材料中的应用，研究了基于CAMNOI D23-ΔID2在酒精溶液中基于CAMNOI D23-ΔID2的几种类型的取代的氧化物陶瓷。结果，发现某些氧化物被稀土元素代替，其含量超过10i d11 s CMI D1-1I D1在室温下的高电子电导率，即使在烧结的多孔状态下，陶瓷和陶瓷在没有任何导电添加剂的情况下作为阴极的活性材料起作用。放电性能根据稀土元素和酒精溶液的种类以及替代方式而变化。对于X = 0.1 CAI D21-X GII D2 lay D22X/3II D2MNOI D2MNOI D2MNOI D23-δGIID2的X = 0.1样品的最高排放能力为225 mAh GII D1-1II D1（810 C GII D1-1II D1）。 D2还显示了没有导电粉的电池的阴极活动材料，例如在包括氯化离子在内的某些盐水溶液中的石墨。放电能力根据盐水溶液的种类和浓度而变化。在15％LICL溶液（670 C GAI D1-1 D1）中获得的排放能力，该溶液与氧化物中的锰相对应，该排放能力从MNII D14+IE D1部分降低到MNII D12+IE D1。这种放电能力几乎与电解MNOI D22相当，包括电导材料，例如石墨。另一方面，SRFEOI D23-ΔieD2能够准备，其放电性能略低于CAI D20.9E D2 Lay D20.1E D20.1E D2MNOE D23-ΔED2