Sol-Gel Design Strategy for Ultradispersed TiO2 Nanoparticles on Graphene for High-Performance Lithium Ion Batteries

被引：333

作者：

Li, Wei ^{[1
,2
]}

Wang, Fei ^{[1
,2
]}

Feng, Shanshan ^{[1
,2
]}

Wang, Jinxiu ^{[1
,2
]}

Sun, Zhenkun ^{[1
,2
]}

Li, Bin ^{[1
,2
]}

Li, Yuhui ^{[1
,2
]}

Yang, Jianping ^{[1
,2
]}

Elzatahry, Ahmed A. ^{[3
,4
]}

Xia, Yongyao ^{[1
,2
]}

Zhao, Dongyuan ^{[1
,2
]}

机构：

[1] Fudan Univ, Dept Chem, Adv Mat Lab, Shanghai Key Lab Mol Catalysis & Innovat Mat, Shanghai 200433, Peoples R China

[2] Fudan Univ, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China

[3] King Saud Univ, Dept Chem, Coll Sci, Riyadh 11451, Saudi Arabia

[4] City Sci Res & Technol Applicat, Adv Technol & New Mat Res Inst, New Borg El Arab City 21934, Alexandria, Egypt

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2013年 / 135卷 / 49期

关键词：

CAPACITIVE ENERGY-STORAGE; CORE-SHELL STRUCTURES; CYCLIC PERFORMANCE; OXYGEN REDUCTION; HYBRID MATERIALS; NANOSHEETS; NANOCRYSTALS; OXIDE; ELECTRODE; CATALYST;

D O I：

10.1021/ja4100723

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The rational design and controllable synthesis of strongly coupled inorganic/graphene hybrids represents a long-standing challenge for developing advanced catalysts and energy-storage materials. Here, we report a simple sol gel method toward creating ultradispersed TiO2 nanoparticles on graphene with an unprecedented degree of control based on the precise separation and manipulation of nanoparticles nucleated, grown, anchored, and crystallized and the reduction of graphene oxide (GO). The hybrid materials show ultradispersed anatase nanoparticles (similar to 5 nm), ultrathin thickness (<= 3 layers), and a high surface area of similar to 229 m(2)/g and exhibit a high specific capacity of similar to 94 mA h g(-1) at similar to 59 C, which is twice as that of mechanically mixed composites (similar to 41 mA h g(-1)), demonstrating the potential of strongly synergistic coupling effects for advanced functional systems.

引用

页码：18300 / 18303

页数：4