Redox Activity of Sodium Vanadium Oxides towards Oxidation in Na Ion Batteries

被引：9
|
作者：
Adamczyk, Evan [1 ]
Gnanavel, Muthaiyan [1 ]
Pralong, Valerie [1 ]
机构：
[1] Normandie Univ, ENSICAEN, UNICAEN, CNRS,CRISMAT, F-14000 Caen, France
来源：
MATERIALS | 2018年 / 11卷 / 06期
关键词：
Na2V3O7; sodium vanadate; Na-ion batteries; Na4V2O7; HIGH-PERFORMANCE CATHODE; CRYSTAL-STRUCTURE; ENERGY-STORAGE; NA2V3O7; ELECTRODES; V2O5;
D O I：
10.3390/ma11061021
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The search for new materials that could be used as electrode material for Na-ion batteries is one of the most challenging issues of today. Many transition metal oxide families as well as transition metal polyanionic frameworks have been proposed over the last five years. In this work, we report the sodium extraction from Na2V3O7, which is a tunnel type structure built of [V3O7](2-) nanotubes held by sodium ions. We report a reversible charge capacity of 80 mAh/g at 2.8 V vs. Na+/Na due to the V5+/V4+ redox activity. No oxygen redox activity has been observed for this material nor for the vanadium (5+) oxide Na4V2O7.
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页数：8
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