In a first aspect, the invention provides a process for preparing silicon-containing composite particles, the process comprising the steps of:(a) providing a plurality of porous particles comprising micropores and/or mesopores, wherein:(i) the D50 particle...

An active material containing silicon, and a carbon precursor containing lignin are provided. The active material is contacted with carbon precursor at 400[deg] C or more in an inert gas atmosphere, such that lignin is converted into inorganic carbon, to o...

An electrode comprises crosslinked polyether-siloxane copolymer obtained by crosslinking siloxane monomer (I), polyether macromers containing two or more alkenyl groups per molecule and optionally compound containing alkenyl groups, with polyethylene glyco...

The electrode has an outer zone (A) forming a base of the electrode, and a high- or ultrahigh-pure electrical graphite with different thermal conductivities. An inner zone (B) is arranged in the outer zone and projected from the outer zone. Specific therma...

The carbon electrode comprises a conical or pyramidal tip (2), which possesses a device for hard-soldering a filament rod and is surrounded at its flanks from a raised edge (3). The raised edge ends above, below or at equal height of the tip of the electro...