レドックスフロー電池における櫛歯型流路内の電流密度分布に及ぼす運転条件の影響

抄録

The effects of flow path structure of a redox flow battery on the discharge performance and the current density distribution were investigated. From the current density distribution measurements, it was confirmed that an interdigitated design (IDD) has a very small bias in the current density distribution upstream and downstream, and that the flow rate has a very small effect on the current density distribution in constant voltage operation, as compared with a flow-through design (FTD). The performance analysis showed that this may be due to the larger value of the surface concentration overpotential due to the slower flow velocity in the IDD.