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In recent years, with the increase of portable appliances and zero emission electric vehicle development, people are looking for a high energy density battery system to meet their requirements. Zinc-air batteries as efficient, clean, green energy, new technologies, with large capacity, high energy density, low cost, discharge performance, stability, security, zero pollution, renewable power and materials, etc., has become the world's energy sector development of hot spots, is a huge market with promising chemical power. In this paper, zinc-air batteries for the following research: air electrode production process optimization, button cell battery assembly and cylindrical design and assembly. Air electrodes are zinc-air battery performance determinants, zinc-air battery technology is basically with the continuous improvement of the air electrode and improve the experimental study of the air electrode catalyst focused on MnO 2 Preparation optimization, the use of steady polarization test methods investigated preparation temperature, the composition ratio of the toner carrier, the carrier concentration and catalyst activation treatment on the catalytic performance. The results show that under the following conditions produced the best performance of the air electrode: carbon carrier pyrolysis temperature 270 ℃; carbon: acetylene black = 9:1; nitric acid activation treatment; Mn (NO 3 ) 2 content was 7.18% (representing the toner quality). In order to improve the catalytic performance, choose a lead acetate, rare earth as an additive, using steady-state polarization and AC impedance test methods, results showed that: lead oxides, rare earth La and Ce as MnO 2 catalyst additives to promote the oxygen reduction reaction, add 7.5% lead acetate is minimal polarization, in general, the metal - air battery current density of 20 ~ 50mA/cm -2 , the electric potential than the individual MnO < sub> 2 catalyst can improve 30 ~ 50mV. Ce added better than La, its content is 10% polarization minimum, general metal - air battery operating current density of 20 ~ 50mA/cm -2 , the potentiometer than individual MnO 2 catalyst can improve 30 ~ 60mV. For impedance spectroscopy analysis, using two Nernstian impedance equivalent circuit was proposed and, by the relevant kinetic data. Data show that adding additives reduce the electrochemical polarization resistance and oxygen diffusion resistance, improved MnO 2 for the oxygen reduction catalytic activity. Button batteries are mainly zinc anode structure has been improved, the use of the zinc powder granulation process, for different types of zinc discharge test, the results show that the structure of zinc on the utilization of zinc has a positive contribution to the improvement of , zinc utilization up to 90%. It was also based on the alkaline manganese batteries R6 model the structural design of the air electrode outside, zinc centered cylindrical battery zinc-air batteries. Loaded with the same button cell granular zinc powder, zinc powder discharge tests showed up to 80 percent utilization, Harbin Engineering University, master's degree thesis in accordance with R6 model way to test discharge the battery discharge time of 19 hours.
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