Electrochemical properties of novel FeV2O4 as an anode for Na-ion batteries

Spinel based transition metal oxide – FeV 2 O 4 is applied as a novel anode for sodium-ion battery. The electrochemical tests indicate that FeV 2 O 4 is generally controlled by pseudo-capacitive process. Using cost-effective and eco-friendly aqueous based binders, Sodium-Carboxymethylcellulose/Styre...

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Bibliographic Details
Published in:Scientific reports 2018-06, Vol.8 (1), p.1-11, Article 8839
Main Authors: Maggay, Irish Valerie B., De Juan, Lyn Marie Z., Lu, Jeng-Shin, Nguyen, Mai Thanh, Yonezawa, Tetsu, Chan, Ting-Shan, Liu, Wei-Ren
Format: Article
Language:English
Subjects:
140/146
639/4077/4079/891
639/638/898
Carboxymethylcellulose
Copper
Electrodes
Humanities and Social Sciences
Hydrogen bonding
multidisciplinary
Rubber
Science
Science (multidisciplinary)
Sodium
Styrene
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Summary:Spinel based transition metal oxide – FeV 2 O 4 is applied as a novel anode for sodium-ion battery. The electrochemical tests indicate that FeV 2 O 4 is generally controlled by pseudo-capacitive process. Using cost-effective and eco-friendly aqueous based binders, Sodium-Carboxymethylcellulose/Styrene butadiene rubber, a highly stable capacity of ~97 mAh∙g −1 is obtained after 200 cycles. This is attributed to the strong hydrogen bonding of carboxyl and hydroxyl groups indicating superior binding with the active material and current collector which is confirmed by the ex-situ cross-section images of the electrode. Meanwhile, only ~27 mAh∙g −1 is provided by the electrode using poly(vinylidene difluoride) due to severe detachment of the electrode material from the Cu foil after 200 cycles. The obtained results provide an insight into the possible applications of FeV 2 O 4 as an anode material and the use of water-based binders to obtain highly stable electrochemical tests for sodium-ion battery.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-27083-z