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Three-dimensional Co3O4@MnO2 hierarchical nanoneedle arrays : morphology control and electrochemical energy storage

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Three-dimensional Co3O4@MnO2 hierarchical nanoneedle arrays : morphology control and electrochemical energy storage
นักวิจัย : Kong, Dezhi , Luo, Jingshan , Wang, Yanlong , Ren, Weina , Yu, Ting , Luo, Yongsong , Yang, Yaping , Cheng, Chuanwei
คำค้น : DRNTU::Engineering::Materials::Energy materials.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Kong, D., Luo, J., Wang, Y., Ren, W., Yu, T., Luo, Y., et al. (2014). Three-dimensional Co3O4@MnO2 hierarchical nanoneedle arrays : morphology control and electrochemical energy storage. Advanced Functional Materials, in press. , 1616-301X , http://hdl.handle.net/10220/19214 , http://dx.doi.org/10.1002/adfm.201304206
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Advanced functional materials
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

In this paper, a highly ordered three-dimensional Co3O4@MnO2 hierarchical porous nanoneedle array on nickel foam is fabricated by a facile, stepwise hydrothermal approach. The morphologies evolution of Co3O4 and Co3O4@MnO2 nanostructures upon reaction times and growth temperature are investigated in detail. Moreover, the as-prepared Co3O4@MnO2 hierarchical structures are investigated as anodes for both supercapacitors and Li-ion batteries. When used for supercapacitors, excellent electrochemical performances such as high specific capacitances of 932.8 F g−1 at a scan rate of 10 mV s−1 and 1693.2 F g−1 at a current density of 1 A g−1 as well as long-term cycling stability and high energy density (66.2 W h kg−1 at a power density of 0.25 kW kg−1), which are better than that of the individual component of Co3O4 nanoneedles and MnO2 nanosheets, are obtained. The Co3O4@MnO2 NAs are also tested as anode material for LIBs for the first time, which presents an improved performance with high reversible capacity of 1060 mA h g−1 at a rate of 120 mA g−1, good cycling stability, and rate capability.

บรรณานุกรม :
Kong, Dezhi , Luo, Jingshan , Wang, Yanlong , Ren, Weina , Yu, Ting , Luo, Yongsong , Yang, Yaping , Cheng, Chuanwei . (2557). Three-dimensional Co3O4@MnO2 hierarchical nanoneedle arrays : morphology control and electrochemical energy storage.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Kong, Dezhi , Luo, Jingshan , Wang, Yanlong , Ren, Weina , Yu, Ting , Luo, Yongsong , Yang, Yaping , Cheng, Chuanwei . 2557. "Three-dimensional Co3O4@MnO2 hierarchical nanoneedle arrays : morphology control and electrochemical energy storage".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Kong, Dezhi , Luo, Jingshan , Wang, Yanlong , Ren, Weina , Yu, Ting , Luo, Yongsong , Yang, Yaping , Cheng, Chuanwei . "Three-dimensional Co3O4@MnO2 hierarchical nanoneedle arrays : morphology control and electrochemical energy storage."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Kong, Dezhi , Luo, Jingshan , Wang, Yanlong , Ren, Weina , Yu, Ting , Luo, Yongsong , Yang, Yaping , Cheng, Chuanwei . Three-dimensional Co3O4@MnO2 hierarchical nanoneedle arrays : morphology control and electrochemical energy storage. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.