NOVELTY - Heat spreader assembly (100) for fuel cell comprises: first element of bulk composite material (175) with flow channels (115) to evenly distribute incoming air for cathode of fuel cell; and second element formed of plate acting as heat spreader (190), formed of copper layer (130) roll bonded to two stainless steel layers (120, 140) with lamination of thermal set conductive composite that enables heat and electricity to flow from cathode while maintaining low resistance among other layers of fuel cell, so as to heat plate to maintain even temperature across membrane electrode assembly.    USE - As heat spreader assembly for fuel cell (claimed).    ADVANTAGE - The heat spreader assembly is a multi-function assembly that provides electrical, thermal and structural functions to the fuel cell. The heat spreader removes/disperses heat from fuel cell reaction and maintains even temperature across associated membrane electrode assembly (MEA). The lamination applied to stainless steel layers enables heat and electricity to flow from cathode while maintaining low resistance among other layers of fuel cell. The copper layer diffuses heat across layer and functions as cathode current collector for fuel cell. The stainless steel layers provide protective barrier to prevent fuel, water, or other byproducts from contacting copper plate, and isolate copper plate from fuel cell to avoid corrosion and cell contamination. The bulk composite material layers function as cold side of enthalpy exchanger system and cathode flow field, and includes flow channels formed throughout to evenly distribute incoming air over enthalpy exchanger membrane and to cathode of MEA. The heat spreader for fuel cell for cathode assembly acts as heat spreader plate to diffuse or evenly distribute heat in desired manner to maintain even temperature across MEA, and evaporate incoming fuel in fuel cell; as cathode flow field plate to evenly distribute air to cathode aspect; as heat conductor to direct heat in predetermined location in fuel cell; as cold side of enthalpy exchanger that acts to warm and/or transfer water from exiting air stream to incoming air stream; as cathode current collector; and as structural component to add compression, stability and integrity to other layers of fuel cell by limiting deflections in assembly enabling adequate MEA compression across substantially entirety of surface area of fuel cell. The heat spreader assembly for fuel cell for anode is located between each anode of two fuel cells arranged in back to back configuration; acts as flow field plate for cold side of enthalpy exchanger; acts as heat spreader plate to distribute heat to maintain even temperature across MEA by removing heat from fuel cell reaction; also conducts electrons from anode of fuel cell with minimum resistive loss; and supplies heat for evaporating incoming methanol. Thus heat spreader assembly provides direct oxidation fuel cell system that removes heat from fuel cell, maintains even MEA temperature, and allows sufficient air and water to cathode aspect of fuel cell. The assembly also provides compression for MEA conductivity and integrity of fuel cell system. With many functions performed by single assembly, the assembly reduces number of components required in fuel cell system, and contributes to smaller form factor, and simplification of manufacturing process.    DETAILED DESCRIPTION - A heat spreader assembly (100) for use in fuel cell, comprises: first element substantially comprised of bulk composite material (175), having flow channels (115) formed in it to evenly distribute incoming air for cathode of fuel cell; and second element comprised of substantially a plate acting as heat spreader (190), where plate can be comprised of, but not limited to, copper layer (130) being roll bonded to two stainless steel layers (120, 140) (or other metals such as aluminum) having lamination of thermal set conductive composite material that enables heat and electricity to flow from cathode while maintaining low resistance among other layers of fuel cell, so that heat spreader assembly acts as heat spreader plate to distribute heat to maintain even temperature across membrane electrode assembly (MEA). The heat spreader assembly further comprises passages in the first and second elements to distribute flow of air to cathode and distribute inlet air over enthalpy exchange membrane. The copper plate is roll bonded to stainless steel layers placed on either side of copper plate. The heat spreader assembly also acts as cold side of enthalpy exchanger that acts to warm and/or transfer water from exiting air stream to incoming air stream, which comprises third element made from bulk composite material (110). The heat spreader assembly for fuel cell further comprises: the first element substantially comprised of bulk composite material, having flow channels formed in it to evenly distribute incoming methanol for anode of fuel cell; and second element substantially comprised of plate acting as heat spreader, where plate includes copper layer roll bonded to two stainless steel layers, and stainless steel layers have lamination of thermal set conductive composite material that enables heat to flow from anode while maintaining low resistance among other layers of fuel cell, so that heat spreader assembly acts as heat spreader plate to distribute heat to maintain even temperature across MEA. An INDEPENDENT CLAIM is included for producing heat spreader assembly for fuel cell involving: applying thermal set adhesive to top and bottom side of copper plate roll bonded with stainless steel on both ides, attaching bulk molded compound layers to stainless steel layers to form heat spreader, where thermal set adhesive enables heat and electricity to flow from cathode while maintaining low resistance among other layers of fuel cell, and forming bulk composite material with flow channels formed in it to evenly distribute incoming air for cathode of fuel cell and cold side of enthalpy exchanger and attaching bulk composite material to heat spreader at high temperature in heated press to form heat spreader assembly; or roll-bonding layer of stainless steel to top side and bottom side of copper plate to form heat spreader, and molding bulk composite material around heat spreader to form heat spreader assembly, where bulk composite material is molded to have flow channels formed in it to evenly distribute incoming air for cathode of fuel cell and cold side of enthalpy exchanger.    DESCRIPTION OF DRAWING(S) - The figures show heat spreader assembly including two bulk composite material layers and heat spreader element, and the heat spreader element.    Heat spreader assembly (100)    Bulk composite material layers (110, 175)    Flow channels (115)    Stainless steel layers (120, 140)    Copper plate (130)    Heat switch tab (150)    Heat spreader element (190)