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Tuning the morphology of ZnMn2O4 lithium ion battery anodes by electrospinning and its effect on electrochemical performance

หน่วยงาน Nanyang Technological University, Singapore

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ชื่อเรื่อง : Tuning the morphology of ZnMn2O4 lithium ion battery anodes by electrospinning and its effect on electrochemical performance
นักวิจัย : Teh, Pei Fen , Sharma, Yogesh Kumar , Ko, Yah Wen , Pramana, Stevin Snellius , Srinivasan, Madhavi
คำค้น : DRNTU::Engineering::Materials
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2556
อ้างอิง : Teh, P. F., Sharma, Y. K., Ko, Y. W., Pramana, S. S., & Srinivasan, M. (2013). Tuning the morphology of ZnMn2O4 lithium ion battery anodes by electrospinning and its effect on electrochemical performance. RSC Advances, 3(8), 2812-2821. , 2046-2069 , http://hdl.handle.net/10220/17672 , http://dx.doi.org/10.1039/c2ra22943a
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : RSC Advances
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

ZnMn2O4 structures of various morphologies (nanorods, nanofibers, nanowebs) have been prepared via a facile electrospinning technique by a simple variation of the sintering profile, and have subsequently been employed as anodes in lithium ion battery applications. After the sintering process, as-spun nanofibers with high aspect ratio have broken into short segments of ZnMn2O4 nanorods (ZMO-NR). Incorporating an intermediate carbonization step has strengthened the mechanical integrity of as-spun nanofibers, resulting in the formation of sintered nanofibers (ZMO-NF) and nanowebs (ZMO-NW). On the basis of FESEM, HRTEM and XRD studies, the formation mechanism of nanostructures consisting of hierarchically self-assembled ZnMn2O4 nanocrystals is discussed. Particle size distribution is computed by Rietveld refinement and HRTEM micrographs, while the valence states are confirmed by XPS. The initial discharge of ZMO-NF and ZMO-NW demonstrated a high capacity of ~1469 mA h g−1 and 1526 mA h g−1, respectively, in the voltage ranges of 0.005 V and 3.0 V versus Li/Li+ at 60 mA g−1, associated with reversible capacities of ~705 mA h g−1 and 530 mA h g−1 after 50 cycles. Morphology tuning of anodes and the importance of interconnected nanoparticulate pathways for lithium ion diffusion are elucidated.

บรรณานุกรม :
Teh, Pei Fen , Sharma, Yogesh Kumar , Ko, Yah Wen , Pramana, Stevin Snellius , Srinivasan, Madhavi . (2556). Tuning the morphology of ZnMn2O4 lithium ion battery anodes by electrospinning and its effect on electrochemical performance.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Teh, Pei Fen , Sharma, Yogesh Kumar , Ko, Yah Wen , Pramana, Stevin Snellius , Srinivasan, Madhavi . 2556. "Tuning the morphology of ZnMn2O4 lithium ion battery anodes by electrospinning and its effect on electrochemical performance".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Teh, Pei Fen , Sharma, Yogesh Kumar , Ko, Yah Wen , Pramana, Stevin Snellius , Srinivasan, Madhavi . "Tuning the morphology of ZnMn2O4 lithium ion battery anodes by electrospinning and its effect on electrochemical performance."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2556. Print.
Teh, Pei Fen , Sharma, Yogesh Kumar , Ko, Yah Wen , Pramana, Stevin Snellius , Srinivasan, Madhavi . Tuning the morphology of ZnMn2O4 lithium ion battery anodes by electrospinning and its effect on electrochemical performance. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2556.