| http://www.w3.org/ns/prov#value | - Suitable electrocatalytically active metals are well known in the art and examples include platinum, palladium, gold, ruthenium, rhodium, silver and alloys thereof including alloys of noble metals and non-noble metals, particularly platinum and rhenium, platinum and ruthenium, platinum and tungsten, platinum and nickel, platinum and rhodium, palladium and tungsten, palladium and nickel, palladium
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