Discharge Performance of the Non-rechargeable Lithium-air Batteries with a Waterproof and Breathable Film in an Open Environment

Abstract

Due to its high energy density, lithium-air battery has been one of the research hotspots. However, there are still many issues that need to be addressed, especially when working in an open environment. In this paper, the pouch-type non-rechargeable lithium-air batteries were fabricated by using high loading air electrode and waterproof and breathable PDMS film, and their discharge performance in an open environment was studied. Due to the high waterproof and breathable performance of PDMS, the battery has better discharge and storage performance. The discharge time is more than 900 h, and the discharge time can reach more than 370 h after the battery is stored in the open environment for 1 month. The results of three electrodes and impedance test show that the electrolyte shortage is the main reason for the increase of polarization of the air electrode and the termination of the discharge of the lithium-air battery.

Keywords

• lithium air battery
• pdms film
• electrochemical performance
• three electrodes