Article Title

Three-dimensional porous V₂O₅ hierarchical octahedrons with adjustable pore architectures for long-life lithium batteries

Authors

Qinyou An, § These authors contributed equally to this work. All authors discussed the results and commented on the manuscript. The authors declare no competing financial interest.
Pengfei Zhang, § These authors contributed equally to this work. All authors discussed the results and commented on the manuscript. The authors declare no competing financial interest.
Fangyu Xiong, § These authors contributed equally to this work. All authors discussed the results and commented on the manuscript. The authors declare no competing financial interest.
Qiulong Wei, § These authors contributed equally to this work. All authors discussed the results and commented on the manuscript. The authors declare no competing financial interest.
Jinzhi Sheng, § These authors contributed equally to this work. All authors discussed the results and commented on the manuscript. The authors declare no competing financial interest.
Qinqin Wang, § These authors contributed equally to this work. All authors discussed the results and commented on the manuscript. The authors declare no competing financial interest.
Liqiang Mai, § These authors contributed equally to this work. All authors discussed the results and commented on the manuscript. The authors declare no competing financial interest.

Keywords

V2O5 octahedron, adjustable pore, long-life lithium battery

Abstract

Three-dimensional (3D) porous V2O5 octahedrons have been successfully fabricated via a solid-state conversion process of freshly prepared ammonium vanadium oxide (AVO) octahedrons. The formation of AVO octahedrons is a result of the selective adsorption of capping reagents and the favourable supersaturation of growth species. Subsequently, 3D porous V2O5 octahedrons were obtained by simple thermolysis of the AVO octahedrons via a calcination treatment. As cathode material for lithium batteries, the porous V2O5 octahedron cathode exhibits a capacity of 96 mAh·g–1 at high rate up to 2 A·g–1 in the rang of 2.4–4 V and excellent cyclability with little capacity loss after 500 cycles, which can be ascribed to its high specific surface area and tunable pore architecture. Importantly, this facile solid-state thermal conversion strategy can be easily extended to controllably fabricate other porous metal oxide micro/nano materials with specific surface textures and morphologies.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-014-0638-1

Publisher

Tsinghua University Press

Recommended Citation

Qinyou An,Pengfei Zhang,Fangyu Xiong,Qiulong Wei,Jinzhi Sheng,Qinqin Wang,Liqiang Mai, Three-dimensional porous V2O5 hierarchical octahedrons with adjustable pore architectures for long-life lithium batteries. NanoRes.2015, 8(2): 481–490