Drastic Enhancement of the Capacitance of Electrochemical Capacitors with Oxide Electrodes

氧化物电极电化学电容器电容的显着增强

• 批准号: 10450321
• 负责人: TAKASU Yoshio
• 金额: $ 8.45万
• 依托单位: Faculty of Textile Science and Technology, Shinshu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B).
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-10450321/
• 关键词: Capacitor; Ruthenium Oxide; Molybdenum Oxide; Vanadium Oxide; Electrochemical Double Layer; Acative Carbon; Capacitance; Calcium; 電気化学キャパシタ; カーボンブラック; スーパーキャパシタ; 炭素; 擬似二重層容量; 酸化物電極

1. Development of Binary Oxide Electrodes with Ru and Less-expensive MetalsThe Ru-V-O/Ti, Ru-Ca-O/Ti, Ru-Mo-O/Ti electrodes prepared by dip-coating method gave large pseudocapacitance. The maximum value was 350 F g^<-1> which was attained with Ru_<40>-V_<60>-O/Ti system calcined at 450℃.2. Development of the Preparation Methods of Large Surface Area-OxidesVarious methods for the enlargement of the surface area of oxides have been developed : (1) Addition of a salt catalyst, ammonium hydrogen carbonate, to the dip-coating solution, (2) Binary and ternary oxide coating by dip-coating method, (3) Addition of a rare earth element to the dip-coating solution followed by dissolution of the rare earth element by acid after calcination, (4) A sol-gel method with a solt catalyst, (5) Transformation of a oxide into laryer structure by melting with KOH followed by ion-exchenge with proton.3. Development of Less-expensive Ti-V-W-O/Ti ElectrodesDip-coated Ti-V-W-O/Ti electrodes from less-expensive elements have been found to give considerably high pseudocapacitane, -100 F g^<-1>.4. Development of Hybrid Electrodes with Metal Oxides and Active CarbonLoading of small amount of MoO_3 on an active carbon electrode has been found to enhance its pseudocapacitance by ca.40 % (ca.180 F g^<-1>).

1. Ru和廉价金属二元氧化物电极的发展采用浸涂法制备的Ru- v - o /Ti、Ru- ca - o /Ti、Ru- mo - o /Ti电极具有较大的赝电容。当Ru_<40>-V_<60>-O/Ti体系在450℃下煅烧时，得到的最大值为350℉g^<-1>。大表面积氧化物制备方法的发展扩大氧化物表面积的方法有很多：(1)在浸涂溶液中加入盐催化剂碳酸氢铵；(2)用浸涂法包覆二元和三元氧化物；(3)在浸涂溶液中加入稀土元素，煅烧后用酸溶解稀土元素；(4)用溶胶-凝胶法催化剂；(5)用KOH熔化将氧化物转化为层状结构，然后与质子离子交换。更便宜的Ti- v - w - o /Ti电极的开发利用更便宜的元素进行浸渍涂覆的Ti- v - w - o /Ti电极可以得到相当高的赝电容烷，-100 F g^<-1>.4。在活性炭电极上加载少量MoO_3，可使其赝电容提高约40%（约180 F g^<-1>）。

项目成果

W.Sugimoto, Y.Takasu: ""Large-Capacitance-Electrochemical Capacitors with Metal Oxides" (review Article)"Hyomen (Surface). Vol.38. 452-459 (2000)

W.Sugimoto、Y.Takasu：“带有金属氧化物的大电容电化学电容器”（评论文章）“Hyomen（表面）。

Yoshio Takasu, T. Ohnuma ら他2名: "Pseudocapacitance of Molybdenum Oxide Particles Highly Dispersed on Glassy Carbon Surface"Electrochemistry. 67・12. 1187-1188 (1999)

Yoshio Takasu、T. Ohnuma 等 2 人：“玻璃碳表面高度分散的氧化钼颗粒的赝电容”电化学 67・12（1999）。

杉本渉,高須芳雄: "金属酸化物を用いた大容量電気化学キャパシタ"表面. 38. 452-459 (2000)

Wataru Sugimoto、Yoshio Takasu：“使用金属氧化物的大容量电化学电容器”Surface 38. 452-459 (2000)。

Y.Takasu, C.Matsuo, T.Ohnuma, M.Ueno, Y.Murakami: "Extremely High Pseudocapacitance of RuO_2 Highly Dispersed on A Glassy Carbon"Chem.Lett.. 1235-1236 (1998)

Y.Takasu、C.Matsuo、T.Ohnuma、M.Ueno、Y.Murakami：“高度分散在玻璃碳上的 RuO_2 的极高赝电容”Chem.Lett.. 1235-1236 (1998)

Y.Takasu, T.Ohnuma, W.Sugimoto, Y.Murakami: "Pseudocapacitance of Molybdenum Oxide Particles Highly Dispersed on Glassy Carbon"Electrochemistry. Vol 67. 1187-1188 (1999)

Y.Takasu、T.Ohnuma、W.Sugimoto、Y.Murakami：“高度分散在玻碳上的氧化钼颗粒的赝电容”电化学。