期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 5, 期 4, 页码 1603-1613出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6ta09547j
关键词
-
资金
- National Natural Science Foundation of China [51501068]
- Graduate Innovation Fund of Jilin University [2016080]
Herein, a rational Co-doped Ni(OH)(2)/Ni3S2 hybrid was designed and grown in situ on Ni foam (NiCo-10) via a one-pot hydrothermal reaction with two-step temperature control, avoiding the utilization of complicated production processes or high-end technology. Interestingly, the as-prepared NiCo-10 presents a distinct one-dimensional serpent-cactus-like structure consisting of ultrathin internal nanosheets. As a supercapacitor electrode, the hinder-free NiCo-10 exhibits an ultrahigh specific capacitance value of 3023.4 F g(-1) at 1 A g(-1)and excellent rate performance (capacitance retention of 82.9% up to 20 A g(-1)), owing to the distinct and available ultrathin serpent-cactus-like structure. Meanwhile, an asymmetric supercapacitor is developed, wherein NiCo-10 is utilized as a positive electrode and activated carbon as a negative electrode. The asymmetric device could exhibit a high specific capacitance value of 136.2 F g(-1) (at 1 A g(-1)), high energy densities of 51.5 W h kg(-1) (at 0.825 kW kg(-1)) and 23.0 W h kg(-1) (even at 8.25 kW kg(-1)), and appropriate cycling stability. The efficient electrochemical performance of NiCo-10 makes it a promising electrode material for the energy storage field.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据