超级电容器
铜
材料科学
电极
电流密度
电化学
纳米棒
多孔性
纳米管
集电器
纳米技术
氢氧化物
电容
冶金
化学工程
复合材料
碳纳米管
电解质
化学
工程类
物理化学
物理
量子力学
作者
Jiahui Kang,Jiali Sheng,Yaqiang Ji,Haoran Wen,Xian‐Zhu Fu,Guoping Du,Rong Sun,Ching‐Ping Wong
标识
DOI:10.1002/slct.201701920
摘要
Large-area and uniform copper hydroxide (CH) nanotubes (NT) were synthesized on copper foils via facile treatment in alkaline solution. The CHNT, consisting of porous walls, were vertically grown on the Cu foils, and their morphology can be readily controlled by adjusting the reaction time. The prepared three-dimensional (3D) CHNT/Cu composites were employed as electrodes for supercapacitors (SCs). A substantial improvement in the electrochemical performance has been observed for the 3D CHNT/Cu electrodes over the CH nanorods (NR)/Cu and nanobundles (NB)/Cu electrodes. Their areal capacitance is as high as 278 mF cm−2 and 216 mF cm−2 at a current density of 1 mA cm−2 and 10 mA cm−2, respectively, and they exhibit excellent stability with about 90.5% maintenance of initial specific capacitance at a constant current density of 5 mA cm−2 after 1000 cycles.
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