Use of sulfonic acids in dry electrolytes to polish metal surfaces through ion transport
Use of dry electrolytes to polish metal surfaces through ion transport. A conductive liquid of the dry electrolyte includes at least a sulfonic acid. According to one embodiment, the porous particles of the dry electrolyte include sulfonate polymer, such as, polystyrene divinylbenzene. According to one embodiment, the conductive liquid of the dry electrolyte includes methane-sulfonic acid. Preferably, the concentration of the sulfonic acid in relation to the solvent is ranging from 1 to 70%. Optionally, the conductive liquid of the dry electrolyte includes a complexing agent and/or a chelating agent.
1. A method of polishing a metal surface by ion transport, the method comprising:
placing the metal surface in contact with a plurality of dry electrolytes, each of the plurality of dry electrolytes including a porous particle containing an electrically conductive liquid in an amount below a saturation point of the porous particle, the porous particle comprising a sulfonate polymer that includes first sulfonic acid groups, the electrically conductive liquid comprising second sulfonic acid groups soluble in the electrically conductive liquid, the second sulfonic acid groups being chlorosulfonic acid, the first and second sulfonic acid groups being in different states and having the same chemical structure.
2. The method according to claim 1 , wherein the porous particle comprises an ion exchange resin of polystyrene-divinylbenzene.