Apparatus and method for converting thermal energy into chemical energy and from chemical energy to electrical energy with chemical buffering

The invention relates to a device (20, 29, 36, 38, 40) and a method for converting thermal energy into chemical energy and from chemical energy to electrical energy with chemical intermediate storage, wherein the device (20, 29, 36, 38, 40) consists of at least - a fuel cell unit (19), which includes at least - an anode (21) of a first gas-permeable current collector (2) and an anode-side catalyst (1), - a cathode (22) of a second gas-permeable current collector (4) and a cathode-side catalyst (5), - a between the anode (21) and cathode (22) befindlicher electrolyte (3), wherein at least the anode (21), the cathode (22) and the electrolyte (3) in a chamber (47) are located, and - an oxygen access (23) to the chamber (47) for a supply of oxygen to the cathode-side catalyst (5), - a fluid reservoir (17), which includes at least - a pyrokatalytisch active material (13) having at least one polar axis, - a first thermal energy carrier (24) at a high temperature T - a second thermal energy source (25) of low temperature T and - a gas diffusion channel (18), wherein the chamber (47) of the fuel cell unit (19) to the fluid reservoir (17) via the gas diffusion channel (18) is in communication, wherein the fluid reservoir (17) contains at least the pyrokatalytisch active material (13), the / is temporal changes in temperature .DELTA.T .DELTA.t exposed, wherein the change in temperature .DELTA.T / .DELTA.t by an alternate heat transfer through a first thermal energy source (24) at a high temperature T