Hydrothermal synthesis of nanostructured MnO2 under magnetic field for rechargeable lithium batteries

Authors

Chao Zhong, University of WollongongFollow
Jiazhao Wang, University of Wollongong
Zhen-Zhen Zhu, Shanghai University
Shulei Chou, University of WollongongFollow
Z. Chen, University of WollongongFollow
Ying Li, Shanghai University
Hua-Kun Liu, University of WollongongFollow

RIS ID

30426

Publication Details

Zhong, C., Wang, J., Zhu, Z., Chou, S., Chen, Z., Li, Y. & Liu, H. K. (2009). Hydrothermal synthesis of nanostructured MnO2 under magnetic field for rechargeable lithium batteries. Journal of Solid State Electrochemistry, 14 (10), 1743-1747.

Abstract

Nanocrystalline MnO₂ was synthesized by the hydrothermal method with or without pulsed magnetic fields. It was found that the morphology of the MnO₂ prepared without magnetic field has an urchin-like structure, while the MnO₂ prepared with magnetic fields has a rambutan-like structure. A pronounced increase in the Brunauer–Emmett–Teller specific surface area was obtained when the intensities of the pulsed magnetic fields increased. The battery performances were improved for the samples prepared with magnetic fields. The MnO₂ prepared under a magnetic field of 4 T shows a capacity of 121.8 mAh g⁻¹, while the MnO₂ prepared without magnetic field only shows 103.0 mAh g⁻¹ after 30 cycles.

Grant Number

ARC/DP0987805

Additional Grant Number

http://purl.org/au-research/grants/ARC/DP0987805