An improved catalytic effect of nitrogen-doped TiO2 nanofibers for rechargeable Li-O2 batteries; the role of oxidation states and vacancies on the surface

被引：59

作者：

Agyeman, Daniel Adjei ^{[1
]}

Song, Kyeongse ^{[1
]}

Kang, Seung Ho ^{[1
]}

Jo, Mi Ru ^{[1
]}

Cho, Eunbi ^{[1
]}

Kang, Yong-Mook ^{[1
]}

机构：

[1] Dongguk Univ Seoul, Dept Energy & Mat Engn, Seoul 100715, South Korea

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2015年 / 3卷 / 45期

基金：

新加坡国家研究基金会;

关键词：

LITHIUM-OXYGEN BATTERIES; ELECTRONIC-STRUCTURE; PHOTOCATALYTIC ACTIVITY; ION BATTERY; ADSORPTION; PHOTOEMISSION; TIO2(110); HYBRID; LIGHT; NANOSTRUCTURES;

D O I：

10.1039/c5ta05426e

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

This work deals with nitrogen-doped TiO2 nanofibers with increased ionic conductivity and good catalytic activity, as a potential cathode catalyst for lithium-air battery. The electrochemical enhancement with nitrogen-doped TiO2 in comparison with pristine TiO2 could be realized by the changed electronic properties correlated with the evolution of oxygen vacancies altering the surface oxidation state of TiO2. A discharge capacity greater than 11 000 mA h g((carbon))(-1) and a cyclic retention more than 25 cycles were achieved with the corresponding nitrogen-doped TiO2 catalyst.

引用

页码：22557 / 22563

页数：7

共 40 条

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Visible-light photocatalysis in nitrogen-doped titanium oxides [J].