کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1292775 | 1497937 | 2015 | 11 صفحه PDF | دانلود رایگان |
• ZnO/MWCNT free-standing anodes were prepared by a novel spin coating method.
• MWCNT buckypapers were used to prevent mechanical disintegration of anode material.
• The effects of chelating agents on the properties of ZnO electrodes were researched.
• ZnO/MWCNT/GLY free-standing electrode provided better capacity retention.
• After 100 cycles, this anode showed as high as of 460 mAh g−1 discharge capacity.
Free standing zinc oxide (ZnO) and multiwalled carbon nanotube (MWCNT) nanocomposite materials are prepared by a sol gel technique giving a new high capacity anode material for lithium ion batteries. Free-standing ZnO/MWCNT nanocomposite anodes with two different chelating agent additives, triethanolamine (TEA) and glycerin (GLY), yield different electrochemical performances. Field emission gun scanning electron microscopy (FEG-SEM), energy dispersive X-ray spectrometer (EDS), high resolution transmission electron microscopy (HRTEM) and X-ray diffraction (XRD) analyses reveal the produced anode electrodes exhibit a unique structure of ZnO coating on the MWCNT surfaces. Li-ion cell assembly using a ZnO/MWCNT/GLY free-standing anode and Li metal cathode possesses the best discharge capacity, remaining as high as 460 mAh g−1 after 100 cycles. This core–shell structured anode can offer increased energy storage and performance over conventional anodes in Li-ion batteries.
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Journal: Journal of Power Sources - Volume 295, 1 November 2015, Pages 235–245