| 摘要 |
PURPOSE:To safely operate an electrochemical power generating element over a long period of time by partitioning a gas passage provided on a negative electrode with bank parts, providing closed grooves on the partitioning banks, and filling said grooves with paste from an electrolyte supply source. CONSTITUTION:In a porous carbon negative electrode substrate 10 bearing a negative electrode catalytic layer 5, outward and inward passages 11 for active material gas are partitioned with banks, and closed grooves 15, 16 are provided on these partitioning banks. Said closed grooves 15, 16 are filled with replenishing electrolyte paste 31 obtained by blending and kneading the heat resistant and phosphatic inorganic material fine powder and concentrated phosphoric acid. A unit power generating element is formed by allowing said negative electrode and the positive electrode of a substrate 20 bearing a positive electrode catalytic layer to face via an electrolyte matrix layer 6 and be closely united in a body. This electrochemical power generating element of acid electrolyte is excellent in its electrolyte bearing capability and durability. |
