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首页> 外文期刊>Journal of Materials Research >Enhanced capacitive performance of activated carbon paper electrode material
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Enhanced capacitive performance of activated carbon paper electrode material

机译:增强活性炭电极材料的电容性能

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摘要

The activated carbon paper (ACP) has been designed as the active electrode material of supercapacitor to improve its capacitive performance. ACP is prepared by electrochemical nitrate ion-assisted exfoliation, sulfate ion-assisted exfoliation, and subsequent hydrothermal reduction processes. The as-prepared ACP shows obviously rougher surface along with the expanded layer distance. ACP exhibits higher specific capacitance of 380 mF/cm(2) at 1 mA/cm(2) than that of 21 mF/cm(2) for carbon paper. ACP electrode shows the cycling capacitance retention of 98% after 5000 cycles at 10 mA/cm(2). The symmetric ACP supercapacitor is constructed using ACP electrode and H2SO4 involved polyvinyl alcohol gel electrolyte. ACP supercapacitor presents the specific capacitance of 97 mF/cm(2), the energy density of 0.343 mW h/cm(3), and the output voltage of 1.6 V at 1 mA/cm(2). ACP with high capacitance performance presents the promising supercapacitor application for the electrochemical energy storage.
机译:活性炭纸(ACP)设计为超级电容器的有源电极材料,以改善其电容性能。 ACP通过电化学硝酸根离子辅助剥离,硫酸根离子辅助剥离和随后的水热还原过程制备。 AS制备的ACP显然呈现出变硬的表面以及膨胀层距离。 ACP在1mA / cm(2)下表现出较高的380mF / cm(2)的比电容比碳纸为21mF / cm(2)。 ACP电极显示在10mA / cm(2)下5000次循环后98%的循环电容保留。使用ACP电极和H 2 SO 4涉及聚乙烯醇凝胶电解质构建对称ACP超级电容器。 ACP超级电容器呈现为97mF / cm(2)的特定电容,能量密度为0.343mW h / cm(3),输出电压为1.6V,1 mA / cm(2)。具有高电容性能的ACP为电化学储能提供了有希望的超级电容器应用。

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