Passive direct liquid fuel cell and its preparing method

A method for preparing a passive direct liquid fuel cell, comprising steps of:

• (1) building models of a current-collector-integrated fuel tank unit and a sealing-fastening-integrated current-collector via a 3D modeling software, printing the models via a 3D printing technology, and then obtaining the current-collector-integrated fuel tank unit (1) and the sealing-fastening-integrated current-collector (3);
• and
• (2) successively arranging an anode gasket (8), an anode electrode (9), an ion-exchange membrane (10), a cathode electrode (11) and a cathode gasket (12) on an anode current collector (4) of the current-collector-integrated fuel tank unit (1);
• then covering the sealing-fastening-integrated current-collector (3) on a membrane electrode assembly (2);
• inserting fixed fasteners (15) into fixed fastening grooves (7), so as to seal and fasten the whole cell;
• and finishing production of the whole cell;
• wherein:
• the passive direct liquid fuel cell comprises the current-collector-integrated fuel tank unit (1) and the sealing-fastening-integrated current-collector (3) which are prepared via the 3D printing technology, wherein:
• the current-collector-integrated fuel tank unit (1) is fastened with the sealing-fastening-integrated current-collector (3);
• and the membrane electrode assembly (2) is sandwiched between the current-collector-integrated fuel tank unit and the sealing-fastening-integrated current-collector;
• the current-collector-integrated fuel tank unit (1) comprises a fuel tank (5) and the anode current collector (4) which are coupled together;
• a fuel adding hole (16) and the fixed fastening grooves (7) cooperating with the sealing-fastening-integrated current-collector (3) are provided on the fuel tank (5);
• and square fuel holes (6) are provided on the anode current collector (4);
• a surface of the anode current collector (4) is lower than a surface of the fuel tank (5), which is beneficial to fixing and assembling the membrane electrode assembly;
• the sealing-fastening-integrated current-collector (3) comprises a cathode current collector (17) which serves as a main part;
• on a surface of the cathode current collector (17), a convex structure (13) is set, and a plurality of air holes (14) corresponding to the fuel holes (6) on the anode current collector (4) are provided;
• and the plurality of fixed fasteners (15), which respectively cooperate with the fixed fastening grooves (7) on the fuel tank (5), are arranged around the cathode current collector (17);
• and
• the membrane electrode assembly (2) comprises the ion-exchange membrane (10) sandwiched between the anode electrode (9) and the cathode electrode (11);
• and, the anode gasket (8) and the cathode gasket (12) are respectively placed on outer sides of the anode electrode (9) and the cathode electrode (11), for avoiding fuel leakage.