Hartvichova, Katerina

The present invention provides a vertical takeoff and landing (VTOL) aircraft having a fuselage (1) ending with a tail (11) and a first wing (2) fixedly attached to the fuselage (1), wherein the first wing (2) is provided with at least two tilting propulsion units (21), wherein the aircraft is further provided with a second wing (3) tiltably attached to the fuselage (1) and located between the first wing (2) and the tail (11), wherein the second wing (3) is provided with at least two propulsion units (31) fixedly attached to the second wing (3). This construction is superior over known VTOL aircraft in terms of aerodynamic properties, smoothness of transition between flight modes, lower energy consumption and reliability.

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The present invention provides an alkali- and/or alkaline earth-ion - sulfur battery comprising at least one cathode containing: - a cathode current collector foil; - optionally a conductive adhesive interlayer; - a primary cathode mass layer, containing a conductive dimensionally stable porous host structure, sulfur as an active material, whereas preferably at least 20 % of the sulfur present is monoclinic sulfur allotrope, and optionally conductive additives, binders and pore-forming additives; - a secondary cathode mass layer, containing sulfur and alkali-ion- and/or alkaline earth-ion-intercalating material; - optionally a layer, containing graphene oxide and/or reduced graphene oxide, heteroatom Group VIIa and/or Group Va elements co-doped graphene, and a Group VIIa and/or Group Va heteroatom-containing polymer; and/or at least one anode containing - an anode current collector foil; - optionally a conductive adhesive interlayer; - a primary anode mass layer, containing a conductive dimensionally stable porous host structure, a metal capable of forming intermetallic alloys with an alkali metal and/or an alkaline earth metal, and optionally conductive additives, binders and pore-forming additives; - optionally a secondary anode mass layer, containing graphene oxide and/or reduced graphene oxide, heteroatom Group VIa elements co-doped graphene, and a polymer, preferably an elastomeric polymer; - an alkali metal and/or an alkaline earth metal, preferably in the form of foil or powder. and at least one separator. The resulting cells offer a wide range of economic and ecological advantages over the currently available cells, as well as allowing versatility of materials and production processes.

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Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …