Development of Supercapacitors with Oxide Electrode

(1)非贵金属氧化物电极用TiQ_2和V_2O_5合成的二元氧化物电极比容量高，约为100F·g~(-1)~(-1)·g~(-1)。这一数值与市场上碳电极的电容相当，二元氧化物电极Ti-V-O的表面电荷大于0.4mC cm~(-2)，是已发表的常规电极中表面活性最高的。将MoO_3负载到活性碳MoO_3/C上，使其在0.5M H_2SO_4中的比容量提高了33%。(2)贵金属氧化物电极高比表面积二元氧化物。采用可聚合络合法制备了Ru-V-O。含有该二元氧化物的电极在Ru_&lt；35&gt；V_&lt；65&gt；O2组成时具有最高的比容量，为1200Fg^&lt；-1&gt；(Ru02)&gt；；比容量不仅比用溶胶凝胶法制备的RuO_2超细粒子高20倍，而且比…高。(3)大学和社会合作的发展a)与Rubycon公司的合作：在有机电解液中测试了MoO_3/C电极的电容，但在活性碳中添加MoO_3的影响很小。B)与新科电机公司合作。用SAM和EPMA对RuO_2-IrO_2/Ti和RuO_2-TiO_2/Ti电极的表面成分进行了表征。Ru和Ir沿氧化层的泥缝有相当大的偏析。讨论了使用超级电容器电路时对其尺寸、电容、热阻的要求。C)与长野县工业研究所合作：用扫描电子显微镜对IrO2-TiO2/Ti电极的表面成分进行了表征。沿氧化层的泥缝观察到相当大的Ir偏析。讨论了氧化物涂层电极的设计策略。10.关键词少

(1) Non-precious Metal Oxide Electrodes The binary oxide electrodes synthesized with TiQ_2 and V_2O_5 provided high capacitance, ca. 100 F g^<-1>. This value corresponds to the capacitance of the carbon electrodes put on the market, and the surface charge of the binary oxide electrodes, Ti-V-O, was higher than 0.4 mC cm^<-2> which is the highest surface activity among the conventional electrodes published. Loading of Mo0_3 on activated carbon, Mo0_3/C, resulted in an increase of the capacitance up to 33% in 0.5 M H_2S0_4.(2) Precious Metal Oxide Electrodes High-surface area binary oxide. Ru-V-O, was developed by polymerizable complex method. The electrodes with this binary oxide provided highest capacitance, 1200 F g^<-1>_<(Ru02)>, at a composition of Ru_<35>V_<65>O_2. The power density was improved by an addition of acetylene black to the oxide. The capacitance is not only 20 times higher than that of the ultrafine Ru0_2 particles prepared by a sol-gel method, but also higher than tha … More t of the amorphous Ru0_2nH_20 which has been the world record.(3) Development of University and Society Collaboration a)Collaboration with Rubycon Co. : The capacitance of Mo0_3/C electrode was examined in organic electrolyte ; however, little effect of the addition of Mo0_3 to the activated carbon was observed. b)Collaboration with Shinko Electric Ind. Co. : The surface composition of Ru0_2-Ir0_2/Ti and Ru0_2-Ti0_2/Ti electrodes were characterized by SAM and EPMA. Considerable segregation of Ru and Ir was observed along the mud-crack of the oxide layer. The requirements of the supercapacitors (size, capacitance, thermal resistance) in order to use them electric circuits were discussed. c)Collaboration with Industrial Research Institute of Nagano Prefecture: The surface composition of Ir0_2-Ti0_2/Ti electrodes were characterized by SAM. Considerable segregation of Ir was observed along the mud-crack of the oxide layer. The strategy of the design of oxide-coated electrodes were discussed. 10. KEY WORDS Less