3D-Frame Structure NiO@CNTs for Ultrafast Charge Slow Discharge Lithium Ion Batteries

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• 作者：Lingling Xu ; Bingan Lu ; ^{luba2012@hnu.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：3D-frame Structure ; NiO nanosheets ; carbon nanotubes ; lithium ion battery ; ultrafast charge slow discharge
• 刊名：Electrochimica Acta
• 出版年：2016
• 出版时间：20 August 2016
• 年：2016
• 卷：210
• 期：Complete
• 页码：456-461
• 全文大小：1893 K

文摘

In this work, an innovative 3D-frame structure ultrathin NiO nanosheets/carbon nanotubes (CNTs) composite as anode for lithium-ion batteries (LIBs) was successfully fabricated via a facile, effective strategy. Our 3D-frame structure NiO@CNTscompositebasedanodeforLIBsalsoshowsultrahighcapacity (*), rate, cycle and Coulombic efficiency performance for the ultrafast charge slow discharge. When using 100 mA g⁻¹ to charge and 2000 mA g⁻¹ to discharge (half-cell), the charge and discharge capacity of the NiO@CNTs composites reached 763 and 1000 mA h g⁻¹ at the first cycle, respectively. From the 2nd cycle the Coulombic efficiency is higher than 95%, and after 100 cycles the capacity maintained 122.7% based on capacity of the second cycle.