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CMOS图像传感器在空间技术中的应用 总被引:29,自引:3,他引:29
介绍了CMOSAPS(有源像素图像传感器 )的原理与结构 ,并介绍了发展现状。详细分析比较了CMOS图像传感器相对CCD的性能特点 ,讨论了CMOS图像传感器在空间技术中的可应用领域 ,尤其是在微纳型卫星遥感成像、姿态敏感方面替代CCD的应用可行性 相似文献
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纳米氧化钴-氧化钌复合型超级电容器的研究 总被引:1,自引:0,他引:1
A novel type of composite electrode based on sheet like cobalt oxide particles has been used in supercapacitors. Cobalt oxide cathodically deposited from Co(NO3)2 solution with carbon nanotubes as matrix exhibited large pseudo-capacitance of 322 F·g^-1 in 6 mol·L^-1 KOH. A sol-gel process for the preparation of ultrafine RuO2 particles was developed to design electrodes with large surface area. The composite electrodes were developed by the deposition of RuO: on the surface of carbon nanotubes. A specific capacitance of 785 F·g^-1 can be achieved with the 20% carbon nanotubes loaded. To characterize the metal oxide nanocomposite electrode, a cyclic voltammetry and AC impedance test are executed. This study also reports a hybrid capacitor, which consists of cobalt oxide composite as a cathode and ruthenium oxide composite as an anode. The electrochemical performance of the hybrid capacitor is characterized by a dc charge/discharge test and cyclic voltammograms. The hybrid capacitor shows capacitor behavior with an extended operating voltage of 1.4 V. The maximum energy density and specific power density of the cell reach the value of 23.7 and 8.1 kW·g^-1 respectively. The hybrid capacitor exhibits high-energy density and stable power characteristics. 相似文献