Porous TiO2/C Nanocomposite Shells As a High-Performance Anode Material for Lithium-Ion Batteries

被引：119

作者：

Wang, Wenshou ^{[1
]}

Sa, Qina ^{[3
]}

Chen, Jihua ^{[4
]}

Wang, Yan ^{[3
]}

Jung, Heejung ^{[2
]}

Yin, Yadong ^{[1
]}

机构：

[1] Univ Calif Riverside, Dept Chem, Riverside, CA 92521 USA

[2] Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92521 USA

[3] Worcester Polytech Inst, Dept Mech Engn, Worcester, MA 01609 USA

[4] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2013年 / 5卷 / 14期

关键词：

TiO2/C nanocomposite shells; porous; resorcinol-formaldehyde (RF) layer; carbon-coating; anode; lithium-ion battery; ANATASE; NANOSTRUCTURES; SPHERES; RUTILE;

D O I：

10.1021/am402350n

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Porous TiO2/C nanocomposite shells with high capacity, excellent cycle stability, and rate performance have been prepared. The synthesis involves coating colloidal TiO2 nanoshells with a resorcinol-formaldehyde (RE) layer with controllable thickness through a sol-gellike process, and calcining the composites at 700 degrees C in an inert atmosphere to induce crystallization from amorphous TiO2 to anatase and simultaneous carbonization from RE to carbon. The cross-linked RE polymer contributes to the high stability of the shell morphology and the porous nature of the shells. A strong dependence of the capacity on the amount of incorporated carbon has been revealed, allowing the optimization of the electrode structure for high-rate cell performance.

引用

页码：6478 / 6483

页数：6

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