Cylindroid-Like Li4Ti5O12 Mesocrystals for High-Rate and Long-Life Lithium-Ion Battery Anodes

被引：7

作者：

Wang Dongdong ^{[1
]}

Shan Zhongqiang ^{[1
]}

Tian Jianhua ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300350, Peoples R China

来源：

CHEMNANOMAT | 2020年 / 6卷 / 05期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

Li4Ti5O12; mesocrystals; high-rate; long-life; full cells; CONFINED SYNTHESIS; HIGH-POWER; NANOSHEET; ELECTRODE; DENSITY; NANOPARTICLES; ULTRAFAST; GRAPHENE; STORAGE; ARRAYS;

D O I：

10.1002/cnma.202000040

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A high rate and long life are two crucial factors for next-generation lithium-ion batteries (LIBs). Here, we report cylindroid-like Li4Ti5O12 mesocrystals (CL-LTO-MC) obtained by a simple solvothermal reaction and following short thermal annealing process. Owing to the single-crystal nature and mesoporous structures, CL-LTO-MC demonstrates a high specific capacity (174.7 mA h g(-1) at 1 C), superior rate performance (145 mA h g(-1) at 50 C) and excellent cycling stability (95.5% capacity retention after 3000 cycles at 20 C). Besides, the CL-LTO-MC/LiNi0.5Mn1.5O4 full cells also display a remarkable cycle performance with 95.7% capacity retention after 500 cycles at 5 C. These results indicate that CL-LTO-MC is a promising anode material for high-rate and long-cycling LIBs.

引用

页码：773 / 778

页数：6

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