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Hollow core-shell nanostructure supercapacitor electrodes : gap matters

หน่วยงาน Nanyang Technological University, Singapore

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ชื่อเรื่อง : Hollow core-shell nanostructure supercapacitor electrodes : gap matters
นักวิจัย : Guan, Cao , Xia, Xinhui , Meng, Nan , Zeng, Zhiyuan , Cao, Xiehong , Soci, Cesare , Zhang, Hua , Fan, Hong Jin
คำค้น : DRNTU::Engineering::Electrical and electronic engineering::Nanoelectronics , DRNTU::Engineering::Materials::Nanostructured materials
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Guan, C., Xia, X., Meng, N., Zeng, Z., Cao, X., Soci, C., Zhang, H., & Fan, H. J. (2012). Hollow core-shell nanostructure supercapacitor electrodes: gap matters. Energy & Environmental Science, 5(10), 9085-9090. , http://hdl.handle.net/10220/17745 , http://dx.doi.org/10.1039/c2ee22815g
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Energy & environmental science
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Hollow core-shell nanorods with a nanogap are designed and constructed with the assistance of atomic layer deposition (ALD) for energy storage applications. As a demonstration, CoO nanorods and NiO nanowalls are enclosed by a TiO2 nanotube shell, forming the “wire in tube” and “wall in box” structures, respectively. A thin sacrificial layer of Al2O3 is deposited by ALD and removed eventually, forming a nanogap between the CoO core (or the NiO nanowall) and the TiO2 shell. When they are tested as supercapacitor electrodes, an evident difference between the solid core–shell nanostructure and hollow ones can be found; for example, the hollow structure shows [similar]2 to 4 times the capacitance compared to the solid wires. The electrochemical properties are also superior compared to the bare nanorods without the nanotube shell. The enhancement is ascribed to the conformal hollow design which provides enlarged specific surface areas and a shorter ion transport path. It is prospected that such a positive nanogap effect may also exist in other electrochemical cell electrodes such as lithium ion batteries and fuel cells.

ASTAR (Agency for Sci., Tech. and Research, S’pore)

บรรณานุกรม :
Guan, Cao , Xia, Xinhui , Meng, Nan , Zeng, Zhiyuan , Cao, Xiehong , Soci, Cesare , Zhang, Hua , Fan, Hong Jin . (2555). Hollow core-shell nanostructure supercapacitor electrodes : gap matters.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Guan, Cao , Xia, Xinhui , Meng, Nan , Zeng, Zhiyuan , Cao, Xiehong , Soci, Cesare , Zhang, Hua , Fan, Hong Jin . 2555. "Hollow core-shell nanostructure supercapacitor electrodes : gap matters".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Guan, Cao , Xia, Xinhui , Meng, Nan , Zeng, Zhiyuan , Cao, Xiehong , Soci, Cesare , Zhang, Hua , Fan, Hong Jin . "Hollow core-shell nanostructure supercapacitor electrodes : gap matters."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Guan, Cao , Xia, Xinhui , Meng, Nan , Zeng, Zhiyuan , Cao, Xiehong , Soci, Cesare , Zhang, Hua , Fan, Hong Jin . Hollow core-shell nanostructure supercapacitor electrodes : gap matters. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.