NOVELTY - The direct-oxidation fuel cell has a solid polymer electrolyte membrane (2) disposed between a cathode (8) and an anode (5). The cathode has cathode catalyst layer (6) with cracks, a catalyst diffusion layer (7), and a cathode protective layer (12) covering cracks of layer (6). The anode has an anode catalyst layer (3) with cracks, an anode diffusion layer (4), and an anode protective layer (11) covering the cracks of layer (3). Both layers (11,12) include a polymer electrolyte and water-repellent particles.    USE - As power source for mobile electronic devices such as mobile phones, personal data assistants, laptop computers and camcorders, and as power source for electric-powered scooters.    ADVANTAGE - The direct oxidation fuel cell has excellent fuel utilization efficiency, electricity generating performance, and high energy density.    DETAILED DESCRIPTION - The direct-oxidation fuel cell has a cathode (8), an anode (5) and a solid polymer electrolyte membrane (2) disposed between anode and cathode. The cathode includes a cathode catalyst layer (6) facing the electrolyte membrane, and a catalyst diffusion layer (7). The anode includes an anode catalyst layer (3) facing the electrolyte membrane, and an anode diffusion layer (4). Both anode and cathode catalyst layers have cracks. A cathode protective layer (12) is formed between cathode catalyst layer and electrolyte membrane, to cover the cracks the cathode catalyst layer. Similarly, an anode protective layer (11) is formed between anode catalyst layer and electrolyte membrane, to cover the cracks of anode catalyst layer. Both the anode and cathode protective layers include a polymer electrolyte and water-repellent particles.    An INDEPENDENT CLAIM is included for manufacture of direct-oxidation fuel cell.    DESCRIPTION OF DRAWING(S) - The figure shows the vertical cross-sectional schematic view of electrolyte membrane-electrode assembly of fuel cell.    Solid polymer electrolyte membrane (2)    Anode catalyst layer (3)    Anode diffusion layer (4)    Anode (5)    Cathode catalyst layer (6)    Catalyst diffusion layer (7)    Cathode (8)    Anode protective layer (11)    Cathode protective layer (12)