High-energy asymmetric electrochemical capacitors based on oxides functionalized hollow carbon fibers electrodes

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• 作者：Ting Li^aAuthor Vitae ; Wenliang Zhang^aAuthor Vitae ; Lei Zhi^aAuthor Vitae ; Hang Yu^aAuthor Vitae ; Liqin Dang^aAuthor Vitae ; Feng Shi^aAuthor Vitae ; Hua Xu^aAuthor Vitae ; Fangyuan Hu^bAuthor Vitae ; Zonghuai Liu^aAuthor Vitae ; Zhibin Lei^a ; ^{zblei@snnu.edu.cn}Author Vitae ; Jieshan Qiu^b ; ^{jqiu@dlut.edu.cn}Author Vitae
• 关键词：Fe2O3-based negative electrode ; Nickel-cobalt double hydroxide ; Hollow carbon fibers ; Asymmetric supercapacitor ; High-energy-density
• 刊名：Nano Energy
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：30
• 期：Complete
• 页码：9-17
• 全文大小：1639 K
• 卷排序：30

文摘

The bundled Fe2O3 nanorods are vertically grown on hollow carbon fibers (aCF). Needle-like nickel-cobalt double hydroxide (NiCo-DH) grown on aCF displays hierarchical porous network. Both aCF-Fe2O3 anode and aCF-NiCo-DH cathode exhibit very high specific capacitance with good rate capability. An asymmetric capacitor build with aCF-Fe2O3 and aCF-NiCo-DH as electrode delivers an energy density of 83.7 Wh kg−1 with remarkable cycling stability.