NOVELTY - The electrocatalyst material comprises a carbon-based substrate and/or a non carbon-based substrate. The carbon-based substrate and/or non-carbon based substrate have an electron-accepting material adsorbed to the substrate. The electron-accepting material comprises a material comprising an amino group, a material comprising an ammonium group, and/or a nitrogen-free electron accepting material. A concentration of the electron-accepting material is less than or equal to 5-15 wt.%. The substrate is metal free substrate. The carbon-based material comprises carbon nanotubes, graphene and/or graphite.    USE - The electrocatalyst material is useful in an electrode of an electrochemical device including a fuel cell, a battery, a biosensor (all claimed), organic solar cells, supercapacitors, hydrogen generators, desalination operations, petrochemical refining and catalytic converters, where the fuel cell is useful as a hydrogen fuel cell, a glucose fuel cell, a methanol fuel cell or a formaldehyde fuel cell and the battery is a lithium battery.    ADVANTAGE - The efficient, stable, and cost-effective electrocatalyst material exhibits excellent catalytic activity, high fuel selectivity and durability, and improved resistance to poisoning effects and corrosion.    DETAILED DESCRIPTION - The electrocatalyst material comprises a carbon-based substrate and/or a non carbon-based substrate. The carbon-based substrate and/or non-carbon based substrate have an electron-accepting material adsorbed to the substrate. The electron-accepting material comprises a material comprising an amino group, a material comprising an ammonium group, and/or a nitrogen-free electron accepting material. A concentration of the electron-accepting material is less than or equal to 5-15 wt.%. The substrate is metal free substrate. The carbon-based material comprises carbon nanotubes, graphene and/or graphite and non-aligned carbon nanotubes and/or aligned carbon nanotubes. INDEPENDENT CLAIMS are included for:    (1) an electrode;    (2) a method of forming an electrode material; and    (3) a fuel cell.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic view of an electrode.    Cathode body (20)    Outer surface of cathode body (22)    Contact portion of cathode body (30)    Catalytic layer (40)    Array of non-functionalized carbon nanotubes. (42)