NOVELTY - The fuel cartridge (100) comprises a part to generate hydrogen by reacting with an electrolyte solution, a liquid-gas separation membrane (120) to surround the hydrogen generation part (110), separate the generated hydrogen from the electrolyte solution and discharge the hydrogen to the outside, and a cap (130) to open and close the membrane. The membrane is made of a flexible material comprising hydrophobic substance having multiple air holes. The hydrogen generation part comprises an anode to generate electrons and a cathode to generate the hydrogen.    USE - The fuel cartridge is useful in a fuel cell power generation system (claimed), which is useful in mobile devices such as a mobile phone (from drawings) and in portable electronic devices, where the fuel cell includes polymer electrolyte membrane fuel cell (PEMFC) and direct methanol fuel cell (DMFC).    ADVANTAGE - The fuel cartridge reduces the reverse flow of an electrolyte solution during the generation of hydrogen and increases the efficiency of hydrogen generation in a simple and effective manner by minimizing the loss of the electrolyte solution.    DETAILED DESCRIPTION - The fuel cartridge (100) comprises a part to generate hydrogen by reacting with an electrolyte solution, a liquid-gas separation membrane (120) to surround the hydrogen generation part (110), separate the generated hydrogen from the electrolyte solution and discharge the hydrogen to the outside, and a cap (130) to open and close the membrane. The membrane is made of a flexible material comprising hydrophobic substance having multiple air holes. The hydrogen generation part comprises an anode to generate electrons and a cathode to generate the hydrogen by receiving the electrons from the anode. A connection terminal (140) is formed on the cap to electrically connect the anode and the cathode to its outside. An INDEPENDENT CLAIM is included for a fuel cell power generation system.    DESCRIPTION OF DRAWING(S) - The figure shows a perspective view of a fuel cartridge.    Fuel cartridge (100)    Hydrogen generation part (110)    Liquid-gas separation membrane (120)    Cap (130)    Connection terminal. (140)