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Materials 2013, 6(10), 4514-4522; doi:10.3390/ma6104514
Article

Vanadium Pentoxide-Based Composite Synthesized Using Microwave Water Plasma for Cathode Material in Rechargeable Magnesium Batteries

1,2,* , 2
 and
1
1 Department of Applied Chemistry, Graduate School of Engineering, Saitama Institute of Technology, 1690, Fusaiji, Fukaya-shi, Saitama 369-0293, Japan 2 Saitama Industrial Technology Center, 3-12-18, Kamiaoki, Kawaguchi-shi, Saitama 333-0844, Japan
* Author to whom correspondence should be addressed.
Received: 26 July 2013 / Revised: 6 September 2013 / Accepted: 6 October 2013 / Published: 11 October 2013
(This article belongs to the Special Issue Microwave Processing of Materials)
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Abstract

Multivalent cation rechargeable batteries are expected to perform well as high-capacity storage devices. Rechargeable magnesium batteries have an advantage in terms of resource utilization and safety. Here, we report on sulfur-doped vanadium pentoxide (S-V2O5) as a potential material for the cathodes of such a battery; S-V2O5 showed a specific capacity of 300 mAh·g−1. S-V2O5 was prepared by a method using a low-temperature plasma generated by carbon felt and a 2.45 GHz microwave generator. This study investigates the ability of S-V2O5 to achieve high capacity when added to metal oxide. The highest recorded capacity (420 mAh·g−1) was reached with MnO2 added to composite SMn-V2O5, which has a higher proportion of included sulfur than found in S-V2O5. Results from transmission electron microscopy, energy-dispersive X-ray spectroscopy, Micro-Raman spectroscopy, and X-ray photoelectron spectroscopy show that the bulk of the SMn-V2O5 was the orthorhombic V2O5 structure; the surface was a xerogel-like V2O5 and a solid solution of MnO2 and sulfur.
Keywords: microwave; rechargeable magnesium battery; cathode material; vanadium pentoxide; sulfur; manganese microwave; rechargeable magnesium battery; cathode material; vanadium pentoxide; sulfur; manganese
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Inamoto, M.; Kurihara, H.; Yajima, T. Vanadium Pentoxide-Based Composite Synthesized Using Microwave Water Plasma for Cathode Material in Rechargeable Magnesium Batteries. Materials 2013, 6, 4514-4522.

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