This invention provides a redox fuel cell comprising an anode and a cathode separated by an ion selective polymer electrolyte membrane; means for supplying a fuel to the anode region of the cell; means for supplying an oxidant to the cathode region of the cell; means for providing an electrical circuit between the anode and the cathode; a non-volatile catholyte solution flowing in fluid communication with the cathode, the catholyte solution comprising a redox mediator which is at least partially reduced at the cathode in operation of the cell, and at least partially regenerated by, optionally indirect, reaction with the oxidant after such reduction at the cathode, and a transition metal complex of a multidentate N-donor ligand as a redox catalyst catalysing the regeneration of the mediator.
本发明提供了一种氧化还原燃料电池,包括一个阳极和一个阴极,由一种离子选择性聚合物电解质膜隔开;为电池的阳极区域提供燃料的手段;为电池的阴极区域提供氧化剂的手段;在阳极和阴极之间提供电路的手段;与阴极流体通信的非挥发性阴极液,阴极液包括在电池运行中至少部分还原的氧化还原中介体,并在这样的还原后通过(可选的)与氧化剂间接反应至少部分再生,并且以多齿N-供体
配体的过渡
金属配合物作为氧化还原催化剂催化介体的再生。