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Achieving high specific charge capacitances in Fe3O4/reduced graphene oxide nanocomposites

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Achieving high specific charge capacitances in Fe3O4/reduced graphene oxide nanocomposites
นักวิจัย : Shi, Wenhui , Zhu, Jixin , Sim, Daohao , Tay, Yee Yan , Lu, Ziyang , Zhang, Xiaojun , Sharma, Yogesh Kumar , Srinivasan, Madhavi , Zhang, Hua , Hng, Huey Hoon , Yan, Qingyu
คำค้น : DRNTU::Engineering::Materials.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2554
อ้างอิง : Shi, W., Zhu, J., Sim, D., Tay, Y. Y., Lu, Z., Zhang, X., et al. (2011). Achieving high specific charge capacitances in Fe3O4/reduced graphene oxide nanocomposites. Journal of materials chemistry, 21, 3422–3427. , http://hdl.handle.net/10220/8360 , http://dx.doi.org/10.1039/c0jm03175e
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of materials chemistry
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

We report a facile approach to synthesize nanocomposites with Fe3O4 nanopaticles (NPs) attached to reduced graphene oxide (rGO) sheets by a solvothermal process, which combines the growth of Fe3O4 NPs and the reduction of GOs in one single step. These Fe3O4/rGO nanocomposites were further used to fabricate thin film supercapacitor electrodes by using a spray deposition technique without the addition of insulating binders. It was found that the Fe3O4/rGO nanocomposites showed much higher specific capacitances than that of either pure rGO or pure Fe3O4 NPs. We further carried out electrochemical characterization of the Fe3O4/rGO nanocomposites with different Fe3O4 : rGO weight ratios (e.g. IFe3O4 : rGO) and showed that Fe3O4/rGO nanocomposites with IFe3O4 : rGO = 2.8 exhibited the highest specific capacitance of 480 F g^- 1 at a discharge current density of 5 A g ^-1 with the corresponding energy density of 67 W h kg ^-1 at a power density of 5506 W kg ^-1. These Fe3O4/rGO nanocomposites also showed stable cycling performance without any decrease in the specific capacitance after 1000 charge/discharge cycles.

บรรณานุกรม :
Shi, Wenhui , Zhu, Jixin , Sim, Daohao , Tay, Yee Yan , Lu, Ziyang , Zhang, Xiaojun , Sharma, Yogesh Kumar , Srinivasan, Madhavi , Zhang, Hua , Hng, Huey Hoon , Yan, Qingyu . (2554). Achieving high specific charge capacitances in Fe3O4/reduced graphene oxide nanocomposites.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Shi, Wenhui , Zhu, Jixin , Sim, Daohao , Tay, Yee Yan , Lu, Ziyang , Zhang, Xiaojun , Sharma, Yogesh Kumar , Srinivasan, Madhavi , Zhang, Hua , Hng, Huey Hoon , Yan, Qingyu . 2554. "Achieving high specific charge capacitances in Fe3O4/reduced graphene oxide nanocomposites".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Shi, Wenhui , Zhu, Jixin , Sim, Daohao , Tay, Yee Yan , Lu, Ziyang , Zhang, Xiaojun , Sharma, Yogesh Kumar , Srinivasan, Madhavi , Zhang, Hua , Hng, Huey Hoon , Yan, Qingyu . "Achieving high specific charge capacitances in Fe3O4/reduced graphene oxide nanocomposites."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2554. Print.
Shi, Wenhui , Zhu, Jixin , Sim, Daohao , Tay, Yee Yan , Lu, Ziyang , Zhang, Xiaojun , Sharma, Yogesh Kumar , Srinivasan, Madhavi , Zhang, Hua , Hng, Huey Hoon , Yan, Qingyu . Achieving high specific charge capacitances in Fe3O4/reduced graphene oxide nanocomposites. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2554.