NOVELTY - An anode separator plate for use in an ion pump, comprises a planar member having an anode inlet opening extending through the planar member forming a portion of input gas stream manifold; fluid flow channel(s) disposed on a first surface of the planar member and connectable at one end to the anode inlet opening; and single cathode outlet opening extending through the planar member forming a portion of cathode output manifold.    USE - The anode separator plate is used in an ion pump for hydrogen fuel infrastructure system for producing pressurized hydrogen (claimed). It is used for converting an input stream such as reformate into pressurized and purified hydrogen-rich gas stream.    ADVANTAGE - The invention achieves a smaller footprint or physical size for the hydrogen pump compared to conventional hydrogen pumps. The hydrogen pump can also withstand higher loading forces without breakage of the plates due to the tie bolts passing through the plates and reducing bending moments which normally occur if the tie bolts are disposed outside the plates.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for:    (A) cathode separator plate for use in an ion pump, comprising a planar member comprising a single cathode outlet opening forming a portion of a cathode output gas stream manifold; and at least one fluid flow channel disposed on a first surface of the planar member and connectable at one end to the cathode outlet opening;    (B) pair of separator plates for use in an ion pump, comprising an anode separator plate and a cathode separator plate, where the fluid flow channel of the anode separator plate comprises a first distance between adjacent lands, and the fluid flow channel of the cathode separator plate comprises a second distance between adjacent lands, and where the first distance is less than the second distance;    (C) ion pump comprising an anode separator plate; a cathode separator plate; an anode electrode disposed adjacent to the anode separator plate; a cathode electrode disposed adjacent to the cathode separator plate; and a proton conducting medium disposed between the anode electrode and the cathode electrode;    (D) hydrogen infrastructure system comprising an ion pump; a storage tank for storing purified hydrogen from the ion pump; and a reformer for supplying reformate to the ion pump;    (E) forming an anode separator plate, comprising forming an anode inlet opening having a first size to form a portion of an input stream gas manifold; forming at least one fluid flow channel; and forming a cathode outlet opening having a second size to form a portion of a cathode output manifold; where the first size is larger than the second size;    (F) forming a cathode separator plate, comprising forming an anode inlet; forming a cathode outlet opening; and forming at least one fluid flow channel; and    (G) producing pressurized hydrogen, comprising providing a low-pressure supply containing hydrogen to an ion pump; applying an electrical potential to the anode electrode and the cathode electrode; transferring protons through the proton conducting medium from the anode electrode to the cathode electrode; and receiving a high-pressure supply of purified hydrogen from the ion pump.    DESCRIPTION OF DRAWING(S) - The figure shows a diagrammatic view of a hydrogen infrastructure system.