Spray-drying synthesis and characterization of Li4Ti5O12 anode material for lithium ion batteries

被引：5

作者：

Li, Chunyang ^{[1
]}

Li, Guojun ^{[2
]}

Wen, Sijing ^{[2
]}

Ren, Ruiming ^{[2
]}

机构：

[1] Dalian Jiaotong Univ, Sch Environm & Chem Engn, Dalian 116028, Peoples R China

[2] Dalian Jiaotong Univ, Sch Mat Sci & Engn, Dalian 116028, Peoples R China

来源：

JOURNAL OF ADVANCED OXIDATION TECHNOLOGIES | 2017年 / 20卷 / 01期

关键词：

Li4Ti5O12; spray drying; nanostructure; electrochemical properties; pores; RATE CAPABILITY; ELECTROCHEMICAL PERFORMANCE; INSERTION; GRAPHENE;

D O I：

10.1515/jaots-2016-0183

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Spherical and nanostructured Li4Ti5O12 powders were successfully prepared through spray-drying method. Li4Ti5O12 began to be formed after calcining the spray-dried amorphous precursor at approximately 350 degrees C, and a single phase was obtained at 750 degrees C. Spherical and porous Li4Ti5O12 particles consisting of polyhedral particles assembled from 21-45 nm grains and 4-24 nm pores. An about 1 nm-thick amorphous layer can also be observed on the surface of the nano-sized grains. The Li4Ti5O12 prepared at 750 degrees C exhibits the initial discharge capacities of 218 and 211 mAh g(-1) and a high retention of 99.90 % and 99.67 % for 50 times at a rate of 1 C or 2 C in the voltage range of 1.0-2.5 V, respectively.

引用

页数：11

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