Previous studies have indicated that the bipolar plates with flow channels can improve the performance of all vanadium redox flow battery efficiently. However, the addition of flow channels into the surface of bipolar plates results in the complication of bipolar plate structure, which leads to the increase of contact resistance caused by the diminution of contact area, and aggravation of bipolar plate corrosion in anode. In the present work, a new cell structure by adjusting the relative position of flow channel and electrode is proposed and the properties of the new proposed cell structure are numerically studied. Results show that the new modified battery structure can increase the effective area of membrane and decrease the internal ionic resistance from the anodic electrode to the cathodic electrode. The modified battery structure exhibits a higher ability on the homogeneous distribution of the current and potential and a lower local overpotential as well as a higher voltage efficiency compared with the original battery structure.

先前的研究表明，带有流动通道的双极板可以有效地改善所有钒氧化还原液流电池的性能。然而，在双极板的表面中增加流动通道导致双极板结构的复杂化，这导致由接触面积的减小引起的接触电阻的增加，以及阳极中双极板腐蚀的加剧。在目前的工作中，提出了一种通过调节流道和电极的相对位置的新的电池结构，并对该数值进行了数值研究。结果表明，新的改进的电池结构可以增加膜的有效面积，并降低从阳极电极到阴极电极的内部离子电阻。