In this paper, a simple and feasible method of making a coin-type Li-air battery (about 20mm indiameter and 28mm in height) was proposed. A special separator having function of air breathing andmoisture prevention was adopted to act as a cover to let air breathe and prevent moisture invasion aswell in cathode side. At the same time, a lithium ion conductive membrane was used between aCelgard membrane and a thin lithium foil to stop oxygen infiltrate into anode side. Compared with theprior art, electrochemical performance testing results showed that the cell had both better powerperformance and longer service life.
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