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3D carbon/cobalt-nickel mixed-oxide hybrid nanostructured arrays for asymmetric supercapacitors

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : 3D carbon/cobalt-nickel mixed-oxide hybrid nanostructured arrays for asymmetric supercapacitors
นักวิจัย : Zhu, Jianhui , Jiang, Jian , Sun, Zhipeng , Luo, Jingshan , Fan, Zhanxi , Huang, Xintang , Zhang, Hua , Yu, Ting
คำค้น : DRNTU::Engineering::Materials::Nanostructured materials
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Zhu, J., Jiang, J., Sun, Z., Luo, J., Fan, Z., Huang, X., et al. (2014). 3D carbon/cobalt-nickel mixed-oxide hybrid nanostructured arrays for asymmetric supercapacitors. Small, 10(14), 2937-2945. , 1613-6810 , http://hdl.handle.net/10220/20466 , http://dx.doi.org/10.1002/smll.201302937
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Small
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

The electrochemical performance of supercapacitors relies not only on the exploitation of high-capacity active materials, but also on the rational design of superior electrode architectures. Herein, a novel supercapacitor electrode comprising 3D hierarchical mixed-oxide nanostructured arrays (NAs) of C/CoNi3O4 is reported. The network-like C/CoNi3O4 NAs exhibit a relatively high specific surface area; it is fabricated from ultra-robust Co-Ni hydroxide carbonate precursors through glucose-coating and calcination processes. Thanks to their interconnected three-dimensionally arrayed architecture and mesoporous nature, the C/CoNi3O4 NA electrode exhibits a large specific capacitance of 1299 F/g and a superior rate performance, demonstrating 78% capacity retention even when the discharge current jumps by 100 times. An optimized asymmetric supercapacitor with the C/CoNi3O4 NAs as the positive electrode is fabricated. This asymmetric supercapacitor can reversibly cycle at a high potential of 1.8 V, showing excellent cycling durability and also enabling a remarkable power density of ∼13 kW/kg with a high energy density of ∼19.2 W·h/kg. Two such supercapacitors linked in series can simultaneously power four distinct light-emitting diode indicators; they can also drive the motor of remote-controlled model planes. This work not only presents the potential of C/CoNi3O4 NAs in thin-film supercapacitor applications, but it also demonstrates the superiority of electrodes with such a 3D hierarchical architecture.

บรรณานุกรม :
Zhu, Jianhui , Jiang, Jian , Sun, Zhipeng , Luo, Jingshan , Fan, Zhanxi , Huang, Xintang , Zhang, Hua , Yu, Ting . (2557). 3D carbon/cobalt-nickel mixed-oxide hybrid nanostructured arrays for asymmetric supercapacitors.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zhu, Jianhui , Jiang, Jian , Sun, Zhipeng , Luo, Jingshan , Fan, Zhanxi , Huang, Xintang , Zhang, Hua , Yu, Ting . 2557. "3D carbon/cobalt-nickel mixed-oxide hybrid nanostructured arrays for asymmetric supercapacitors".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zhu, Jianhui , Jiang, Jian , Sun, Zhipeng , Luo, Jingshan , Fan, Zhanxi , Huang, Xintang , Zhang, Hua , Yu, Ting . "3D carbon/cobalt-nickel mixed-oxide hybrid nanostructured arrays for asymmetric supercapacitors."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Zhu, Jianhui , Jiang, Jian , Sun, Zhipeng , Luo, Jingshan , Fan, Zhanxi , Huang, Xintang , Zhang, Hua , Yu, Ting . 3D carbon/cobalt-nickel mixed-oxide hybrid nanostructured arrays for asymmetric supercapacitors. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.