RuO2-wired high-rate nanoparticulate TiO2 (anatase):: Suppression of particle growth using silica

被引：31

作者：

Erjavec, B. ^{[1
]}

Dominko, R. ^{[1
]}

Umek, P. ^{[2
]}

Sturm, S. ^{[2
]}

Pejovnik, S. ^{[3
]}

Gaberscek, M. ^{[1
]}

Jamnik, J. ^{[1
]}

机构：

[1] Natl Inst Chem, SI-1000 Ljubljana, Slovenia

[2] Jozef Stefan Inst, Ljubljana 1000, Slovenia

[3] Fac Chem & Chem Technol, Ljubljana 1000, Slovenia

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 06期

关键词：

anatase; TiO2; rate performance; wiring; RuO2; SiO2;

D O I：

10.1016/j.elecom.2008.04.006

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

To enhance the high-rate capability (up to 120 C, 20 A/g) of nanoparticulate TiO2 (anatase) formed by thermal treatment of protonated TiO2 nanotubes, we used two types of additives: RuO2 as an electron-conductive material [Y.-G. Guo, Y.-S. Hu, W. Sigle, J. Maier, Adv. Mater. 19 (2007) 2087] and silica as a suppressant of particle growth during heat treatment. We show systematically that both additives, when used separately, improve the high-rate performance of anatase by 25-55 mA h/g at 60 C. The combined use of both additives in a total amount of merely 2.5 wt.% leads to an improvement of more than 70 mA h/g at 60 C. The underlying mechanisms for these significant effects are briefly discussed. (C) 2008 Elsevier B.V. All rights reserved.

引用

收藏

页码：926 / 929

页数：4

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