Abstract: A material for a battery or an accumulator, especially for a negative electrode of an accumulator, for example, a lithium ion secondary battery, the use of such a material, an electrode that includes such a material, a battery having such an electrode, and a process for producing such a material. The material includes carbon, an alloy and/or a mixture of silicon with at least one element of main group 1 of the Periodic Table of the Elements excluding lithium, and optionally at least one further metallic element and production-related impurities, the elements being distributed within a silicon phase in the case of a mixture, and a binder which binds carbon and the alloy and/or the mixture to give a solid material.

Abstract: A material for a battery or an accumulator, especially for a negative electrode of an accumulator, for example, a lithium ion secondary battery, the use of such a material, an electrode that includes such a material, a battery having such an electrode, and a process for producing such a material. The material includes carbon, an alloy and/or a mixture of silicon with at least one element of main group 1 of the Periodic Table of the Elements excluding lithium, and optionally at least one further metallic element and production-related impurities, the elements being distributed within a silicon phase in the case of a mixture, and a binder which binds carbon and the alloy and/or the mixture to give a solid material.

Abstract: An edge controlled fuel injection pump for internal combustion engines, whose axially and rotationally movable pump piston, guided within the pump cylinder, has an improved leakage oil return system, which avoids piston wear and increased oil leakage even under very high injection pressures and relatively short piston strokes. The pump piston has an annular leakage oil collecting groove next to, but separate from, the recess that serves to end the fuel delivery, and a plurality of narrow leakage oil return grooves, which are formed in the outer surface of the piston diametrically opposite the recess and are connected with the collecting groove. Of these leakage oil return grooves, at least one is always connected with a leakage oil bore in the pump cylinder to a chamber of low pressure in the pump during the useful stroke of the piston.