Patent ID: 7875386
Filing Date: 2011-01-25
Classification: H01M,Y02E,Y02T

Abstract:
1. An energy converter cell, comprising a negative electrode made from a metal chosen from the group comprising tin, zinc, chromium, iron, cadmium, lead and copper (M), a porous iron oxide layer (Fe 3 O 4 ) in contact with the negative electrode, a positive electrode comprising graphite and an electrolyte that is positioned between the electrodes and is in contact with the latter, the electrolyte containing in the charged state a manganate (IV) salt that is dissolved in water and an alkali metal (A) hydroxide and forms a galvanic element, said galvanic element being connected to an ohmic consumer resistor and a supply of thermal energy, the ohmic consumer resistor being further connected to the electrodes, wherein discharging the galvanic element by delivering electrical energy to an ohmic consumer resistor and charging by a supply of thermal energy are described by the following reactions: Discharging: a) electrochemical reaction at the positive electrode: b) electrochemical reaction at the negative electrode: Charging: c) recycling reaction at the positive electrode: d) recycling reaction at the positive electrode: