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High–rate electrochemical capacitors from highly graphitic carbon–tipped manganese oxide/mesoporous carbon/manganese oxide hybrid nanowires

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : High–rate electrochemical capacitors from highly graphitic carbon–tipped manganese oxide/mesoporous carbon/manganese oxide hybrid nanowires
นักวิจัย : Jiang, Hao , Yang, Liping , Li, Chunzhong , Yan, Chaoyi , Lee, Pooi See , Ma, Jan
คำค้น : DRNTU::Science::Chemistry::Physical chemistry::Electrochemistry. , DRNTU::Engineering::Materials::Energy materials.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2554
อ้างอิง : Jiang, H., Yang, L., Li, C., Yan, C., Lee, P. S. & Ma, J. (2011). High–rate electrochemical capacitors from highly graphitic carbon–tipped manganese oxide/mesoporous carbon/manganese oxide hybrid nanowires. Energy & Environmental Science, 4, 1813-1819. , http://hdl.handle.net/10220/7257 , http://dx.doi.org/10.1039/c1ee01032h
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Energy & environmental science
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

In this paper, using manganese oxide as an example, we report the successful design and synthesis of a novel one-dimensional highly graphitic carbon-tipped manganese oxide/mesoporous carbon/ manganese oxide hybrid nanowire. The unique structure significantly improves the conductivity of metal oxide materials, which is a key limitation in pseudocapacitors. The hybrid nanowire with optimal carbon content, when applied as an electrode, exhibits superior capacitive properties in 1 M Na2SO4 aqueous solution, such as high specific capacitance (266 F g 1 at 1 A g 1 ), excellent rate capability (56.4% capacity retention at 60 A g 1 ) and outstanding cycling stability (without degradation after 1200 cycles). The energy densities achieved can be as high as 20.8Wh kg 1 , at a power density of 30 kWkg 1 . The results demonstrated that the manganese oxide in our hybrid nanomaterial was efficiently utilized with the assistance of the highly conductive graphitic carbon-tipped mesoporous carbon shell. It is reckoned that the present low-cost novel hybrid nanowire can serve as a promising electrode material for supercapacitors and other electrochemical devices.

บรรณานุกรม :
Jiang, Hao , Yang, Liping , Li, Chunzhong , Yan, Chaoyi , Lee, Pooi See , Ma, Jan . (2554). High–rate electrochemical capacitors from highly graphitic carbon–tipped manganese oxide/mesoporous carbon/manganese oxide hybrid nanowires.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Jiang, Hao , Yang, Liping , Li, Chunzhong , Yan, Chaoyi , Lee, Pooi See , Ma, Jan . 2554. "High–rate electrochemical capacitors from highly graphitic carbon–tipped manganese oxide/mesoporous carbon/manganese oxide hybrid nanowires".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Jiang, Hao , Yang, Liping , Li, Chunzhong , Yan, Chaoyi , Lee, Pooi See , Ma, Jan . "High–rate electrochemical capacitors from highly graphitic carbon–tipped manganese oxide/mesoporous carbon/manganese oxide hybrid nanowires."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2554. Print.
Jiang, Hao , Yang, Liping , Li, Chunzhong , Yan, Chaoyi , Lee, Pooi See , Ma, Jan . High–rate electrochemical capacitors from highly graphitic carbon–tipped manganese oxide/mesoporous carbon/manganese oxide hybrid nanowires. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2554.