Abstract: The present invention provides an electric energy storage device, in particular a battery, at least comprising: —an anode comprising an alkali metal selected from lithium and sodium or a combination thereof; —a cathode comprising a sulphur-containing organosilane compound or a mixture of sulphur-containing organosilane compounds; and—an electrolyte placed between the anode and the cathode; wherein the cathode comprises a current collector surface that has been at least partly modified by grafting the sulphur-containing organosilane compound or a mixture of sulphur-containing organosilane compounds thereon.

Abstract: The present invention provides a process for preparing sulfur-containing branched organosilane polymers comprising: reacting sulfur with a vinyl silane compound in a solvent and in the presence of a catalytic amount of an accelerator at an elevated temperature of at least 40° C. The process, and the organosilane polymers obtained by using the process, are very suitable for application in battery technologies.

Abstract: The present invention relates to an electric energy storage device, in particular a battery, at least comprising: —an anode comprising a divalent metal selected from magnesium, calcium, beryllium and zinc or a combination thereof or an alloy comprising at least one of these metals; —a cathode comprising elemental sulphur, or a sulphur-containing organosilane compound, or a mixture of sulphur-containing organosilane compounds, or a mixture of sulphur and sulphur-containing organosilane compounds grafted on the surface of the cathode; and—an electrolyte placed between the anode and the cathode; wherein the cathode comprises a current collector surface that has been at least partly modified by grafting the sulphur-containing organosilane compound or a mixture of sulphur-containing organosilane compounds thereon.

Abstract: The present invention provides an electric energy storage device, in particular a battery, at least comprising:—an anode comprising an alkali metal selected from lithium and sodium or a combination thereof;—a cathode comprising a sulphur-containing organosilane compound or a mixture of sulphur-containing organosilane compounds; and—an electrolyte placed between the anode and the cathode; wherein the cathode comprises a current collector surface that has been at least partly modified by grafting the sulphur-containing organosilane compound or a mixture of sulphur-containing organosilane compounds thereon.