Battery Performance and Photocatalytic Activity of Mesoporous Anatase TiO2 Nanospheres/Graphene Composites by Template‐Free Self‐Assembly

Advanced Functional Materials - Tập 21 Số 9 - Trang 1717-1722 - 2011
Na Li1, Gang Liu1, Chao Zhen1, Feng Li1, Lili Zhang1, Hui‐Ming Cheng1
1Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua RD, Shenyang 110016, P. R. China, Fax: (+86) 24‐2390‐3126

Tóm tắt

AbstractNanosized mesoporous anatase TiO2 particles have important applications in high‐performance lithium ion batteries and efficient photocatalysis. In contrast to the conventional synthesis routes where various soft or hard templates are usually employed, the direct growth of uniform mesoporous anatase TiO2 nanospheres on graphene sheets by a template‐free self‐assembly process is presented. Compared to the conventional mesoporous anatase particles consisting of polycrystalline TiO2, the microstructure of obtained mesoporous anatase nanospheres on graphene sheets is single‐crystal‐like. The growth mechanism, lithium ion battery performance, and photocatalytic activity of the resultant mesoporous anatase TiO2 nanospheres/graphene composites are thoroughly investigated. In comparison to the reference TiO2, the composite shows substantial improvement in lithium specific capacity from 1 C to 50 C, and photocatalytic removing organic pollutant and hydrogen evolution. More strikingly, the specific capacity of the composite at the rate of 50 C is as high as 97 mA h g−1, 6 times higher than that of the reference TiO2.

Từ khóa


Tài liệu tham khảo

10.1038/24132

10.1038/nmat1206

10.1039/B512824M

10.1002/adfm.200700396

10.1021/ja069113u

10.1002/anie.200460937

10.1002/anie.200705633

10.1021/jp062946m

10.1002/anie.200907099

Yu J. C., 2002, Chem. Mater., 14, 1064

10.1021/ja100040p

10.1002/adma.200602828

10.1039/b925523k

10.1021/cm8002589

10.1021/jp805963s

10.1016/j.materresbull.2010.01.019

10.1126/science.1102896

10.1038/nmat1849

10.1126/science.1158877

10.1021/jz900265j

10.1021/nn900150y

10.1021/jp905456f

Zhang Q., 2010, Chinese Sci. Bull., 55, 620, 10.1360/csb2010-55-7-620

10.1021/ja100329d

10.1002/adma.200901920

10.1021/nn100740x

10.1021/cm101532x

10.1007/s12274-010-0033-5

10.1002/adfm.201001391

10.1021/nn901819n

Ye J. F., 2010, J. Am. Chem. Soc.

10.1126/science.1188035

Gregg S. J., 1982, Adsorption, surface area and porosity

10.1021/jp900511u

10.1021/ja100102y

10.1039/c0cc00832j

10.1002/adma.200602189

10.1021/ja954172l

10.1021/ja067733p

10.1021/cm035046g

10.1021/nn100449w

10.1016/j.carbon.2008.10.031

10.1021/jp970490q

Thông tin
Thông tin xuất bản

Advanced Functional Materials

Tập 21 Số 9

1717-1722

Thông tin tác giả