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

Materials

Masashi Inamoto²  Hideki Kurihara¹ 

[1] Saitama Industrial Technology Center, 3-12-18, Kamiaoki, Kawaguchi-shi, Saitama 333-0844, Japan; E-Mail:;Department of Applied Chemistry, Graduate School of Engineering, Saitama Institute of Technology, 1690, Fusaiji, Fukaya-shi, Saitama 369-0293, Japan; E-Mail:

关键词: microwave;    rechargeable magnesium battery;    cathode material;    vanadium pentoxide;    sulfur;    manganese;   

DOI  :  10.3390/ma6104514

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.