Synthesis of hybrid Ni-Co oxide @ 3D carbon skeleton derived from pollen grains for advanced supercapacitors

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• 作者：Chao Long ; Yong Xiao ; Mingtao Zheng ; Hang Hu ; Hanwu Dong ; Bingfu Lei ; Haoran Zhang ; Jianle Zhuang ; Yingliang Liu ; ^{tliuyl@scau.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Carbon skeleton ; Hybrid Ni-Co oxide ; Chemical bath deposition ; Synergy effect
• 刊名：Electrochimica Acta
• 出版年：2016
• 出版时间：20 August 2016
• 年：2016
• 卷：210
• 期：Complete
• 页码：695-703
• 全文大小：2951 K

文摘

Great efforts have been made on the preparation and property enhancement of electrode materials for the supercapacitors, also known as electrochemical capacitors. In this work, we synthesize a novel composite, combining hybrid Ni-Co oxide and 3D carbon skeleton derived from rape pollen grains. In virtue of the synergistic effect between hybrid Ni-Co oxide and 3D carbon skeleton, the obtained composite exhibits good electrical conductive and stable microstructure for ions transport, providing the material with a high specific capacitance and excellent cyclic stability. At the current density of 1 A g^−1, the prepared composite shows a superior capacitance of 1625 F g^−1, and as high as 1160 F g^−1 at even 25 A g^−1. In addition, it should be mentioned that the capacitance retention of the composite was 90% after 5000 cycles at 20 A g^−1. The method presented in our research provides an easy and facile way to prepare a high performance composited material with well physical and chemical properties, which could be applied to advanced supercapacitors as well as other energy-storage systems.