LiCrTiO4 Nanowires with the (111) Peak Evolution during High-Performance Lithium Ion Battery Anodes

被引：20

作者：

Luo, Minghe ^{[1
]}

Yu, Haoxiang ^{[1
]}

Cheng, Xing ^{[1
]}

Zhu, Haojie ^{[1
]}

Ye, Wuquan ^{[1
]}

Yan, Lei ^{[1
]}

Qian, Shangshu ^{[1
]}

Shui, Miao ^{[1
]}

Shu, Jie ^{[1
]}

机构：

[1] Ningbo Univ, Fac Mat Sci & Chem Engn, 818 Fenghua Rd, Ningbo 315211, Zhejiang, Peoples R China

来源：

ACS SUSTAINABLE CHEMISTRY & ENGINEERING | 2017年 / 5卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Lithium chromium titanate; Nanowires; Electrospun; Structural evolution; In situ X-ray diffraction; Lithium ion batteries; IN-SITU; ELECTRODE MATERIAL; ELECTROCHEMICAL PROPERTIES; NANOSTRUCTURED MATERIALS; STORAGE BEHAVIOR; SODIUM TITANATE; SPINEL LICRTIO4; LI4TI5O12; COMPOSITE; CAPABILITY;

D O I：

10.1021/acssuschemeng.7b02567

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

LiCrTiO4 is a lithium insertion material that is isostructural with Li4Ti5O12. Upon modification of its morphology, LiCrTiO4 nanowires exhibit a high charge capacity of 154.6 mA h g(-1) at 100 mA g(-1), and this value can be maintained at 121.0 mA h even at a high current density of 700 mA g(-1). Furthermore, the cycling performance shows that LiCrTiO4 nanowires can also deliver a reversible capacity of 120.0 mA h g(-1) with 95.6% capacity retention of the first cycle after 550 cycles. The excellent electrochemical properties were revalidated by cyclic voltammetry and electrochemical impedance spectroscopy measurements. The most interesting feature in this work is the relationship between the periodic variation of the (111) peak intensities and the migration of lithium ions during cycling. This proves that LiCrTiO4 nanowires are a zero-strain insertion material that can be a promising anode material for lithium ion batteries.

引用

页码：10580 / 10587

页数：8