Journal of Industrial and Engineering Chemistry, Vol.72, 250-254, April, 2019
Cobalt vanadate nanoparticles as bifunctional oxygen electrocatalysts for rechargeable seawater batteries
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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- bond strength and large surface area.
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