Synthesis of Li₄Ti₅O₁₂-reduced graphene oxide composite and its application for hybrid supercapacitors

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• 作者：CongCong Fu ; LiJuan Zhang ; JianHong Peng ; Hao Wang ; Hui Yan
• 关键词：Li4Ti5O12 ; reduced graphene oxide ; hybrid supercapacitor ; electrochemical performance
• 刊名：Ionics
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：22
• 期：10
• 页码：1829-1836
• 全文大小：1,493 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Electrochemistry
  Materials Science
  Physical Chemistry
  Condensed Matter
  Renewable Energy Sources
  Electrical Power Generation and Transmission
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1862-0760
• 卷排序：22

文摘

We describe in this paper the synthesis and the characterization of Li₄Ti₅O₁₂-reduced graphene oxide (LTO-RGO) composite and demonstrate their use as hybrid supercapacitor, which is consist of an LTO negative electrode and activate carbon (AC) positive electrode. The LTO-RGO composites were synthesized using a simple, one-step process, in which lithium sources and titanium sources were dissolved in a graphene oxide (GO) suspension and then thermal treated in N₂. The lithium-ion battery with LTO-RGO composite anode electrode revealed higher discharge capacity (167 mAh g−1 at 0.2 C) and better capacity retention (67%) than the one with pure LTO. Meanwhile, compared with the AC//LTO supercapacitor, the AC//LTO-RGO hybrid supercapacitor exhibits higher energy density and power density. Results show that the LTO-RGO composite is a very promising anode material for hybrid supercapacitor.