Abstract: An energy apparatus comprising at least one functional unit including a first cell comprising a first cell electrode and at least one first cell opening for a first cell aqueous liquid and for a first cell gas. The first cell electrode comprises an iron-based electrode; a second cell comprising a second cell electrode and at least one second cell opening for a second cell aqueous liquid and for a second cell gas. The second cell electrode comprises at least one metal comprising 60-99.9 at. % nickel, and 0.1-35 at. % iron and a separator. The first cell and the second cell share the separator which is configured to block transport of at least one of O2 and H2 from one cell to another while having permeability for at least one of hydroxide ions (OH?) monovalent sodium (Na+), monovalent lithium (Li+) and monovalent potassium (K+).

Abstract: The invention provides a method (10) for ammonia production, the method (10) comprising: —reacting dihydrogen and dinitrogen (115) to form ammonia in a reactor (120); providing a reactor gas mixture (125) from the reactor (120) to a recycle loop (130), wherein the recycle loop (130) comprises or is functionally coupled to a separator (140); and providing at least part of the reactor gas mixture (125) from the recycle loop (130) to the reactor (120); and —switching between a first operation mode (20) and a second operation mode (30), wherein: in the first operation mode (20) dihydrogen and dinitrogen (115) are provided to the reactor (120), and the separator (140) provides a first fraction F1 of the ammonia from the reactor gas mixture (125) to a product outlet (150); and in the second operation mode (30) the separator (140) provides a second fraction F2 of the ammonia from the reactor gas mixture (125) to the product outlet (140); wherein the first fraction F1 is larger than the second fraction F2, and wherei

Abstract: The invention provides a method of storing varying or intermittent electrical energy and one or more of hydrogen (H2) and oxygen (O2) with an energy apparatus, the method comprising: providing the first cell aqueous liquid, the second cell aqueous liquid, and electrical power from an external power source to the functional unit thereby providing an electrically charged functional battery unit and one or more of hydrogen (H2) and oxygen (O2) stored in said storage system, wherein during at least part of a charging time the functional unit is charged at a potential difference between the first cell electrode and the second cell electrode of more than 1.37 V.

Abstract: The invention provides a method (10) for ammonia production, the method (10) comprising: —reacting dihydrogen and dinitrogen (115) to form ammonia in a reactor (120); providing a reactor gas mixture (125) from the reactor (120) to a recycle loop (130), wherein the recycle loop (130) comprises or is functionally coupled to a separator (140); and providing at least part of the reactor gas mixture (125) from the recycle loop (130) to the reactor (120); and —switching between a first operation mode (20) and a second operation mode (30), wherein: in the first operation mode (20) dihydrogen and dinitrogen (115) are provided to the reactor (120), and the separator (140) provides a first fraction F1 of the ammonia from the reactor gas mixture (125) to a product outlet (150); and in the second operation mode (30) the separator (140) provides a second fraction F2 of the ammonia from the reactor gas mixture (125) to the product outlet (140); wherein the first fraction F1 is larger than the second fraction F2, and wherei

Abstract: The invention provides an electrolytic cell (200) for temporally shifted electrolytic production of H2 and O2, the electrolytic cell comprising a cell compartment (210), wherein the cell compartment comprises a gas evolution electrode (220) and an electron storage electrode (230), wherein the gas evolution electrode comprises a nickel-based electrode, wherein the electron storage electrode comprises an iron-based electrode, and wherein an electrochemical storage capacity Cgee of the gas evolution electrode is?5% of an electrochemical storage capacity Cesc of the electron storage electrode.

Abstract: The invention provides a method of storing varying or intermittent electrical energy and one or more of hydrogen (H2) and oxygen (O2) with an energy apparatus, the method comprising: providing the first cell aqueous liquid, the second cell aqueous liquid, and electrical power from an external power source to the functional unit thereby providing an electrically charged functional battery unit and one or more of hydrogen (H2) and oxygen (O2) stored in said storage system, wherein during at least part of a charging time the functional unit is charged at a potential difference between the first cell electrode and the second cell electrode of more than 1.37 V.

Abstract: The invention provides an electrolytic cell 10 for the production of ammonia (NH3), comprising an electrolytic cell unit 100 comprising a first electrode 110, a second electrode 120, and an electrolyte 133, further a voltage generator 210, a supply 220 of a dinitrogen comprising fluid 221, and a supply 230 of a water comprising fluid 231. The electrolyte is configured to allow transport of protons. The first electrode is permeable for protons, wherein the first electrode is at first side in contact with the electrolyte and at second side is in fluid contact with the supply of the dinitrogen comprising fluid. The second electrode is permeable for protons but impermeable to O2 and H2O. The second electrode is at first side also in contact with the electrolyte, and at second side in fluid contact with the supply of the water comprising fluid. The ammonia can be produced and stored in liquid form.

Abstract: The invention provides a method of storing varying or intermittent electrical energy and one or more of hydrogen (H2) and oxygen (O2) with an energy apparatus, the method comprising: providing the first cell aqueous liquid, the second cell aqueous liquid, and electrical power from an external power source to the functional unit thereby providing an electrically charged functional battery unit and one or more of hydrogen (H2) and oxygen (O2) stored in said storage system, wherein during at least part of a charging time the functional unit is charged at a potential difference between the first cell electrode and the second cell electrode of more than 1.37 V.

Abstract: A battery including an anode including iron sulphide as active material, with the sulphur content being at least 5 wt. % of the total of iron and sulphur, a cathode, and an alkaline electrolyte including an alkaline component dissolved in water, with the anode including less than 50 wt. % of other active materials than iron sulphide. Preferably, the sulphur content of the anode is more than 10 wt. % of sulphur, calculated in the total of iron and sulphur and 70 wt. % or less. The use of iron sulphide in the anode provides a rechargeable electrical energy storage system which is low-cost, easy to produce, and environmental friendly, and which shows a long lifetime and has excellent electrochemical properties like high power density and good cycling efficiency. The battery according to the invention also shows superior charge/discharge behavior as compared to e.g. lead-acid and nickel-iron batteries.

Abstract: The invention provides a method of storing varying or intermittent electrical energy and one or more of hydrogen (H2) and oxygen (O2) with an energy apparatus, the method comprising: providing the first cell aqueous liquid, the second cell aqueous liquid, and electrical power from an external power source to the functional unit thereby providing an electrically charged functional battery unit and one or more of hydrogen (H2) and oxygen (O2) stored in said storage system, wherein during at least part of a charging time the functional unit is charged at a potential difference between the first cell electrode and the second cell electrode of more than 1.37 V.

Abstract: The invention provides an electrolytic cell 10 for the production of ammonia (NH3), comprising an electrolytic cell unit 100 comprising a first electrode 110, a second electrode 120, and an electrolyte 133, further a voltage generator 210, a supply 220 of a dinitrogen comprising fluid 221, and a supply 230 of a water comprising fluid 231. The electrolyte is configured to allow transport of protons. The first electrode is permeable for protons, wherein the first electrode is at first side in contact with the electrolyte and at second side is in fluid contact with the supply of the dinitrogen comprising fluid. The second electrode is permeable for protons but impermeable to 02 and H2O. The second electrode is at first side also in contact with the electrolyte, and at second side in fluid contact with the supply of the water comprising fluid. The ammonia can be produced and stored in liquid form.

Abstract: A battery including an anode including iron sulphide as active material, with the sulphur content being at least 5 wt. % of the total of iron and sulphur, a cathode, and an alkaline electrolyte including an alkaline component dissolved in water, with the anode including less than 50 wt. % of other active materials than iron sulphide. Preferably, the sulphur content of the anode is more than 10 wt. % of sulphur, calculated in the total of iron and sulphur and 70 wt. % or less. The use of iron sulphide in the anode provides a rechargeable electrical energy storage system which is low-cost, easy to produce, and environmental friendly, and which shows a long lifetime and has excellent electrochemical properties like high power density and good cycling efficiency. The battery according to the invention also shows superior charge/discharge behavior as compared to e.g. lead-acid and nickel-iron batteries.