Redox flow battery with anisotropic electrode layer
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United States of America Patent
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Sep 12, 2017
Grant Date -
Jan 12, 2017
app pub date -
Dec 9, 2014
filing date -
Jan 24, 2014
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Abstract
A redox flow battery having reduced internal resistance is provided. The redox flow battery includes a membrane, a bipolar plate, an electrode disposed between the membrane and the bipolar plate, an inlet port for supplying an electrolyte to the electrode, and an outlet port for discharging the electrolyte from the electrode, and performs a charge-discharge reaction by allowing the electrolyte to flow in the electrode. The electrode includes an anisotropic electrode layer having different permeabilities between a direction A1 on a plane of the electrode and a direction A2 orthogonal to the direction A1 on the plane of the electrode. In the anisotropic electrode layer, a permeability K1 in the direction A1 is larger than a permeability K2 in the direction A2. The electrode is disposed such that the direction A1 is substantially parallel to a main flow direction of the electrolyte in the electrode, the main flow direction being determined on the basis of a positional relationship between the inlet port and the outlet port and a shape of a surface of the bipolar plate on the electrode side.
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