Cobalt vanadate nanoparticles as bifunctional oxygen electrocatalysts for rechargeable seawater batteries

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Title
Cobalt vanadate nanoparticles as bifunctional oxygen electrocatalysts for rechargeable seawater batteries
Author
Shin, Kang HoPark, JeheePark, Sul KiNakhanivej, PuritutHwang, Soo MinKim, YoungsikPark, Ho Seok
Issue Date
2019-04
Publisher
ELSEVIER SCIENCE INC
Citation
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, v.72, pp.250 - 254
Abstract
Herein, we report synthesis of Co3V2O8 nanoparticles for an electrocatalyst of seawater batteries. The cell using Co3V2O8 achieves a higher voltage efficiency of ∼76% than ∼72% of the cell without catalyst. In addition, the Co3V2O8 shows a good rate capability with reduced voltage gaps and an increased power density of ∼5.9 mW cm−2. This cell is stable over 20 cycles for 400 h with reduced voltage gap of ∼0.95 V. These findings are attributed to the facilitated redox kinetics of the clustered Co3V2O8 nanoparticles arising from the optimal metal-OH bond strength and large surface area.
URI
https://scholarworks.unist.ac.kr/handle/201301/25756
URL
https://linkinghub.elsevier.com/retrieve/pii/S1226086X18313480
DOI
10.1016/j.jiec.2018.12.025
ISSN
1226-086X
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