REDOX FLOW BATTERY

• Main Authors: YOKOYAMA YOSHIFUMI, ORIJI MANABU, WATANABE KENTARO, TONEGAWA SHO, NISHIKATA TAKETOMO, IRWANSYAH
• Format: Patent
• Language: English; Japanese
• Published: 09.07.2020
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a redox flow battery that can selectively reduce and redissolve MnO2 when the MnO2 is generated in a cathode electrolyte containing manganese ions, and suppress a decrease in the electric capacity of a battery.SOLUTION: A redox flow battery includes a redox flow battery cell, a circulation pump that circulates a positive electrode electrolyte, a positive electrode electrolyte circulation piping that circulates the positive electrode electrolyte, and a filter provided in the positive electrode electrolyte circulation pipe, and including a portion derived from a reducing compound, and the positive electrode electrolyte contains manganese ions.SELECTED DRAWING: Figure 2 【課題】マンガンイオンを含む正極電解液中にＭｎＯ2が生成した場合に選択的にＭｎＯ2を還元して再溶解することができ、かつ、電池の電気容量の低下を抑制することができるレドックスフロー電池を提供すること。【解決手段】レドックスフロー電池セルと、正極電解液を循環させる循環ポンプと、正極電解液を循環させるための正極電解液循環配管と、正極電解液循環配管に設けられた、還元性化合物に由来する部位を含むフィルターとを備え、正極電解液がマンガンイオンを含むレドックスフロー電池。【選択図】図２