Development of Electrochemical Capacitors with Noble Metal Oxide-Coated Electrodes

贵金属氧化物涂层电极电化学电容器的研制

• 批准号: 07650987
• 负责人: TAKASU Yoshio
• 金额: $ 1.41万
• 依托单位: Shinshu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650987/
• 关键词: Ruthenium Oxide; Electrochmical Capacitor; Electroconducting Oxide; Vanadium Oxide; Rare Earth; Iridium Oxide; Titanium Dioxide; Tin Dioxide; 酸化モリブデン; 酸化カルシウム; チタン; 電気二重層

The purpose of this research project is to design highly porous oxide-coated electrodes having large pseudo-capacitance which are capable to be loaded on electric vehicles. Following two methods have been applied to prepare RuO_2-or IrO_2-base electrodes with large pseudo-capacitance.1.Formation of mixed oxides with SnO_2, TiO_2, VO_x or MoO_x by dip-coating method : In this case, some binary metal oxides form homogeneous solid solution ; however, some binary oxides do not form solid solution. The crystallization of RuO_2 or IrO_2 is disturbed by the addition of other metal element, resulting in the formation of amorphous-like higly porous oxide layr. In some cases, the added oxide plays a role of supporting material for the noble metal oxide particles or partially alloyed mixed oxide.2.Formation of Raney-type porous oxide layr with rare earth element : These electrodes were prepared by leaching out of rare earth (RE) element from RuO_2 (or IrO_2)-REO_x/Ti electrodes, which were prepared by dip-coating method using alcoholic solutions of chlorides of ruthenium and a RE.It has been found that a dip-coated RuO_2(30)-VO_x(70)/Ti electrode gave the maximum value of the pseudo-capacitance followed by a RuO_2(50)-MoO_x(50)/Ti electrode. Although thecapacitance of the both Raney-type-RuO_2 and IrO_2 electrodes gave larger values than those of RuO_2-SnO_2 and RuO_2-TiO_2, it was samaller than those of RuO_2(30)-VO_x(70)/Ti and RuO_2(50)-MoO_x(50)/Ti electrodes.

本研究的目的是设计具有大赝电容的高多孔氧化物涂层电极，其能够装载在电动车辆上。本文采用以下两种方法制备了具有大赝电容的RuO_2基或IrO_2基电极：1.浸涂法制备SnO_2，TiO_2，VO_x或MoO_x的混合氧化物：在这种情况下，有些二元金属氧化物形成均匀的固溶体，有些二元氧化物不形成固溶体。其它金属元素的加入干扰了RuO_2或IrO_2的晶化，形成了类非晶态的多孔氧化物层。在某些情况下，添加的氧化物起到贵金属氧化物颗粒或部分合金化的混合氧化物的支撑材料的作用。2.具有稀土元素的雷尼型多孔氧化物层的形成：这些电极是用从RuO_2中浸出稀土元素的方法制备的（或IrO_2）-REO_x/Ti电极，用钌氯化物和稀土氯化物的醇溶液浸涂法制备了RuO_2（30）-VO_x（70）/Ti电极的赝电容最大，其次是RuO_2（50）-MoO_x（50）/Ti电极。虽然Raney型RuO_2和IrO_2电极的电容值比RuO_2-SnO_2和RuO_2-TiO_2电极的大，但比RuO_2（30）-VO_x（70）/Ti和RuO_2（50）-MoO_x（50）/Ti电极的小。

项目成果

Y. Murakami: "″Effects of rare Earth Chlorides on the Preparation of Porous Ruthenium Oxide Electrodes″" J. Alloys and Compounds. 239. 111-113 (1996)

Y. Murakami：“稀土氯化物对多孔氧化钌电极制备的影响”J.合金与化合物。239. 111-113 (1996)

Y. Murakami: "″Preparation of Highly Porous Iridium Oxide Electrodes by Pore Initiation with Rare Earth Ions″" J. Alloys and Compounds. (印刷中).

Y. Murakami：““通过稀土离子引发孔制备高度多孔氧化铱电极””J.合金和化合物。（出版中）。

Y. Takasu: "Electrochemical Capacitors" F. M. Delnik and M. Tomkiewicz, 308 (1996)

Y. Takasu：“电化学电容器”F. M. Delnik 和 M. Tomkiewicz，308 (1996)

Y. Takasu: "″Dip Coated Ru-V Oxide Electrodes for Electrochemical Capacitors″" J. Electrochem. Soc.(印刷中).

Y. Takasu：““用于电化学电容器的浸涂 Ru-V 氧化物电极””J. Electrochem. Soc.（印刷中）。

Y.Murakami, T.Nakamura, X.-G.Zhang, and Y.Takasu: ""Preparation of Highly Porous Iridium Oxide Electrodes by Pore Initiation with Rare Earth Ions"" J.Alloys and Compounds. (in press).

Y.Murakami、T.Nakamura、X.-G.Zhang 和 Y.Takasu：“通过稀土离子引发孔制备高度多孔氧化铱电极”J.合金和化合物。