| CPC C25B 11/057 (2021.01) [C25B 1/04 (2013.01); C25B 9/70 (2021.01); C25B 9/73 (2021.01); C25B 11/02 (2013.01)] | 13 Claims |
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1. An electrode comprising:
a metal coil, wherein the metal coil comprises a metal selected from copper, silver, gold, nickel and aluminum, wherein turns of the metal coil are separated by a gap; and
a metal wire, wherein at least part of the metal wire is arranged inside the metal coil and wherein the metal wire and the metal coil are in electrical contact,
wherein the metal wire comprises a metal selected from copper, silver, gold, nickel and aluminum,
wherein the metal wire and the metal coil are made of a same metal,
wherein the metal coil has a plurality of turns forming an elongated coil body with an open central channel along a central axis of the metal coil,
wherein the metal wire extends longitudinally inside the open central channel from one end of the metal coil to an other end of the metal coil along the central axis of the metal coil,
wherein the plurality of turns of the metal coil are separated from the at least part of the metal wire arranged inside the metal coil by at least a portion of the open central channel, and
wherein the metal wire and the metal coil are covered with a nanoporous structure comprising nickel.
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