Surfactant-free nonaqueous synthesis of lithium titanium oxide (LTO) nanostructures for lithium ion battery applications

被引：78

作者：

Yu, Seung-Ho ^{[2
,3
]}

Pucci, Andrea ^{[1
]}

Herntrich, Tobias ^{[1
]}

Willinger, Marc-Georg ^{[1
]}

Baek, Seung-Hwan ^{[4
]}

Sung, Yung-Eun ^{[2
,3
,4
]}

Pinna, Nicola ^{[1
,4
]}

机构：

[1] Univ Aveiro, Dept Chem, CICECO, P-3810193 Aveiro, Portugal

[2] Seoul Natl Univ, Sch Chem & Biol Engn, Seoul 151744, South Korea

[3] Seoul Natl Univ, Res Ctr Energy Convers & Storage, Seoul 151744, South Korea

[4] Seoul Natl Univ, World Class Univ, Program Chem Convergence Energy & Environm C2E2, Sch Chem & Biol Engn,Coll Engn, Seoul 151744, South Korea

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 03期

关键词：

SOL-GEL ROUTES; ELECTROCHEMICAL PROPERTIES; NANOCRYSTALLINE LI4TI5O12; NEGATIVE ELECTRODE; ANODE MATERIAL; LI-INSERTION; SPINEL; NANOPARTICLES; NANOMATERIALS; PERFORMANCE;

D O I：

10.1039/c0jm03064c

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：

A one-pot template-free solvothermal synthesis of crystalline Li(4)Ti(5)O(12) nanostructures based on the "benzyl alcohol route'' is introduced. The 1-2 mu m sized nanostructured spherical particles are constituted of nanocrystallites in the size range of a few nm. This is the first report showing that crystalline Li(4)Ti(5)O(12) can be directly obtained by soft chemistry solution routes. The as-synthesized crystalline nanostructures show good lithium intercalation/deintercalation performances at high rates (up to 30 C) and good cycling stabilities. Annealing the nanostructures at 750 degrees C improves the performance, which approaches the theoretical capacity of Li(4)Ti(5)O(12) with no noticeable (less than 5%) capacity loss after 200 cycles.

引用

页码：806 / 810

页数：5

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