I123 レドックスフローバッテリーの電池性能に及ぼす電流密度分布の影響測定(OS-5:燃料電池・二次電池関連研究の新展開(2))

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  • I123 Analysis of the Effect of Current Density Distribution on Cell Performance in Redox Flow Battery

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The vanadium redox flow battery (VRB) has emerged as a viable grid-scale energy storage technology that offers energy storage solutions for renewable energy applications. In this study, we focus on the effect of material transport and electrolyte concentration distribution on cell performance. The original cell was specially designed for measurement of current density distribution, and the analysis method was established. In the method, the measured values just after the start of discharge were used to identify the non-uniform contact resistances, and the current density distribution unaffected by the measurement devices can be estimated. The measurement results showed that the current density decreases along the electrolyte flow, and the range of the current density and the cell performance are improved by increasing the electrolyte flow rate.

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