An undivided zinc-cerium redox flow battery operating at room temperature (295 K)

作者：Leung P K; de Leon C Ponce^*; Walsh F C

来源：Electrochemistry Communications, 2011, 13(8): 770-773.

DOI：10.1016/j.elecom.2011.04.011

• Cerium
• Flow battery
• Undivided cell
• Zinc

An undivided zinc-cerium hybrid redox flow battery is proposed. High discharge cell voltage of c.a. 2.1 Vat 20 rnA cm(-2) and an average energy efficiency of 75% were obtained. The cerium half-cell reaction was highly reversible on a carbon felt electrode with less than a 15 mV change between charge and discharge cycles. The limiting factor for extended cycling was the zinc negative electrode, as residual zinc remained on the electrode after discharge. The battery self-discharge was evaluated by monitoring the open-circuit cell voltage, the capacity was found to last for approximately 7 h after being charged for 30 min.

• 出版日期2011-8