Abstract: The heat transfer device includes a sealed bag, a working fluid, and a contact component. The working fluid is enclosed in the bag. The contact component includes a first contact portion and a second contact portion that are separated from each other via a spacer. A left edge portion of the bag is disposed between the first contact portion and the second contact portion. The left edge portion contacts the first contact portion and the second contact portion when the bag expands due to vaporization of the working fluid.

Abstract: The heat transfer device includes a sealed bag, a working fluid, and a contact component. The working fluid is enclosed in the bag. The contact component includes a first contact portion and a second contact portion that are separated from each other via a spacer. A left edge portion of the bag is disposed between the first contact portion and the second contact portion. The left edge portion contacts the first contact portion and the second contact portion when the bag expands due to vaporization of the working fluid.

Abstract: An electrode for redox flow battery is disposed opposite a membrane of a redox flow battery. The electrode includes a fiber assembly including a plurality of carbon fibers. The fiber assembly includes soft carbon fibers with a Young's modulus of 200 GPa or less. An average carbon fiber diameter of the soft carbon fibers is preferably 20 ?m or less.

Abstract: An electrode is constituted by a sheet-shaped porous body and used in an electrolyte-circulating battery that performs charging and discharging by circulating an electrolyte. Assuming that a portion of a side surface of the electrode that is adjacent to an inlet for the electrolyte when the electrode is installed in the electrolyte-circulating battery is an inlet end surface and a portion of the side surface of the electrode that is adjacent to an outlet for the electrolyte when the electrode is installed in the electrolyte-circulating battery is an outlet end surface, the electrode includes a first flow channel that is connected to the inlet end surface and extends toward the outlet end surface and a second flow channel that is connected to the outlet end surface and extends toward the inlet end surface. The first flow channel and the second flow channel do not directly communicate with each other.

Abstract: Provided are a bipolar plate that can decrease the internal resistance of a flow battery, a redox flow battery, and a method for producing a bipolar plate. A bipolar plate sandwiched between a positive electrode in which a positive electrode electrolyte flows and a negative electrode in which a negative electrode electrolyte flows includes a positive-electrode-side surface in which a flow channel having a plurality of grooves through which the positive electrode electrolyte flows is provided and a negative-electrode-side surface in which a flow channel having a plurality of grooves through which the negative electrode electrolyte flows is provided.

Abstract: An electrode for redox flow battery is disposed opposite a membrane of a redox flow battery. The electrode includes a fiber assembly including a plurality of carbon fibers. The fiber assembly includes soft carbon fibers with a Young's modulus of 200 GPa or less. An average carbon fiber diameter of the soft carbon fibers is preferably 20 ?m or less.

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.

Abstract: Provided are a bipolar plate that can decrease the internal resistance of a flow battery, a redox flow battery, and a method for producing a bipolar plate. A bipolar plate sandwiched between a positive electrode in which a positive electrode electrolyte flows and a negative electrode in which a negative electrode electrolyte flows includes a positive-electrode-side surface in which a flow channel having a plurality of grooves through which the positive electrode electrolyte flows is provided and a negative-electrode-side surface in which a flow channel having a plurality of grooves through which the negative electrode electrolyte flows is provided.

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.