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Fluorine-doped Fe2O3 as high energy density electroactive material for hybrid supercapacitor applications

หน่วยงาน Nanyang Technological University, Singapore

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ชื่อเรื่อง : Fluorine-doped Fe2O3 as high energy density electroactive material for hybrid supercapacitor applications
นักวิจัย : Karthikeyan, Kaliyappan , Amaresh, Samuthirapandian , Lee, Sol Nip , Aravindan, Vanchiappan , Lee, Yun Sung
คำค้น : DRNTU::Engineering::Nanotechnology
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Karthikeyan, K., Amaresh, S., Lee, S. N., Aravindan, V., & Lee, Y. S. (2014). Fluorine-Doped Fe2O3 as High Energy Density Electroactive Material for Hybrid Supercapacitor Applications . Chemistry - An Asian Journal, 9(3), 852-857. , 1861-4728 , http://hdl.handle.net/10220/19153 , http://dx.doi.org/10.1002/asia.201301289
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Chemistry - An Asian Journal
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Nanostructured α-Fe2O3 with and without fluorine substitution were successfully obtained by a green route, that is, microwave irradiation. The hematite phase materials were evaluated as a high-performance electrode material in a hybrid supercapacitor configuration along with activated carbon (AC). The presence of fluorine was confirmed through X-ray photoelectron spectroscopy and transmission electron microscopy. Fluorine-doped Fe2O3 (F-Fe2O3) exhibits an enhanced pseudocapacitive performance compared to that of the bare hematite phase. The F-Fe2O3/AC cell delivered a specific capacitance of 71 F g−1 at a current density of 2.25 A g−1 and retained approximately 90 % of its initial capacitance after 15 000 cycles. Furthermore, the F-Fe2O3/AC cell showed a very high energy density of about 28 W h kg−1 compared to bare hematite phase (∼9 W h kg−1). These data clearly reveal that the electrochemical performance of Fe2O3 can be improved by fluorine doping, thereby dramatically improving the energy density of the system.

บรรณานุกรม :
Karthikeyan, Kaliyappan , Amaresh, Samuthirapandian , Lee, Sol Nip , Aravindan, Vanchiappan , Lee, Yun Sung . (2557). Fluorine-doped Fe2O3 as high energy density electroactive material for hybrid supercapacitor applications.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Karthikeyan, Kaliyappan , Amaresh, Samuthirapandian , Lee, Sol Nip , Aravindan, Vanchiappan , Lee, Yun Sung . 2557. "Fluorine-doped Fe2O3 as high energy density electroactive material for hybrid supercapacitor applications".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Karthikeyan, Kaliyappan , Amaresh, Samuthirapandian , Lee, Sol Nip , Aravindan, Vanchiappan , Lee, Yun Sung . "Fluorine-doped Fe2O3 as high energy density electroactive material for hybrid supercapacitor applications."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Karthikeyan, Kaliyappan , Amaresh, Samuthirapandian , Lee, Sol Nip , Aravindan, Vanchiappan , Lee, Yun Sung . Fluorine-doped Fe2O3 as high energy density electroactive material for hybrid supercapacitor applications. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.