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

ABSTRACT: Spinel based transition metal oxide - FeV2O4 is applied as a novel anode for sodium-ion battery. The electrochemical tests indicate that FeV2O4 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 FeV2O4 as an anode material and the use of water-based binders to obtain highly stable electrochemical tests for sodium-ion battery.

SUBMITTER: Maggay IVB 

PROVIDER: S-EPMC5995833 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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Electrochemical properties of novel FeV<sub>2</sub>O<sub>4</sub> as an anode for Na-ion batteries.

Maggay Irish Valerie B IVB   De Juan Lyn Marie Z LMZ   Lu Jeng-Shin JS   Nguyen Mai Thanh MT   Yonezawa Tetsu T   Chan Ting-Shan TS   Liu Wei-Ren WR  

Scientific reports 20180611 1

Spinel based transition metal oxide - FeV<sub>2</sub>O<sub>4</sub> is applied as a novel anode for sodium-ion battery. The electrochemical tests indicate that FeV<sub>2</sub>O<sub>4</sub> 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<sup>-1</sup> is obtained after 200 cycles. This is attributed to the strong hydrogen bonding of carboxy  ...[more]

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