Structure and reaction mechanism of the air electrode
2012-06-02 by seoer8
The so-called air electrode is a breathable, transparent liquid, can be conductive, catalytic activity of the film, its proportion in the whole cell is very small, the remaining space can be used to fill the anode material. Air electrode as the cathode in the battery discharge process, the eCopper Electrode internal diffusion along the electrode surface, the oxygen reduction reaction occurs in the role of a catalyst. Air electrode by the electrical grid of the metal conductor (nickel mesh, copper mesh), waterproof layer, catalyst layer from repression (Figure 1), typically use PTFE (polytetrafluoroethylene) bonding together activated carbon, graphite The chemical reaction of the carrier. It uses oxygen in the air as the cathode active material to accept electronic Cathodic Reduction. Because oxygen can not be directly to the electrode reaction, it must be in the gas - liquid - solid interface can be restored. Side in contact with the electrolyte, the other side in contact with oxygen, so the air electrode air battery. The performance of the air Nickel Electrode by the waterproof layer, catalyst layer and the preparation process and other factors. The objective of the study focused on the study of high efficiency thin air electrode technology, and including electrodes physical structure of the catalyst for the development of better, longer life, low manufacturing costs.