Binary Li4Ti5O12‐Li2Ti3O7 Nanocomposite as an Anode Material for Li‐Ion Batteries. (11th September 2012)

• Record Type: Journal Article
• Authors: Zhu, Guan‐Nan; Chen, Long; Wang, Yong‐Gang; Wang, Con‐Xiao; Che, Ren‐Chao; Xia, Yong‐Yao
• Is Part Of: Advanced functional materials. Volume 23:Number 5(2013)
• Page Start: 640
• Page End: 647
• Publication Date: 2012-09-11
• Subjects: Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201201741
• Languages: English
• ISSNs: 1616-301X

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Li₄Ti₅O₁₂ typically shows a flat charge/discharge curve, which usually leads to difficulty in the voltage‐based state of charge (SOC) estimation. In this study, a facile quench‐assisted solid‐state method is used to prepare a highly crystalline binary Li₄Ti₅O₁₂‐Li₂Ti₃O₇ nanocomposite. While Li₄Ti₅O₁₂ exhibits a sudden voltage rise/drop near the end of its charge/discharge curve, this binary nanocomposite has a tunable sloped voltage profile. The nanocomposite exhibits a unique lamellar morphology consisting of interconnected nanograins of ≈20 nm size with a hierarchical nanoporous structure, contributing to an enhanced rate capability with a capacity of 128 mA h g⁻¹ at a high C‐rate of 10 C, and excellent cycling stability.</p> </abstract>