Multicell Stack of Nonaqueous Lithium–Air Batteries

Abstract

The lithium–air rechargeable battery has been considerably improved through the use of ether-based electrolytes. However, to realize high energy density in practical applications, a large number of lithium–air cells must be stacked, similar to the configuration of conventional lithium-ion batteries. This configuration requires a novel design of the cell stack such that air can be supplied to the cathode. We have recently developed an “air-breathing” passive system for lithium–air batteries comprising multicell stacks, where air is breathed in and out through porous current collectors sandwiched between cathodes. A ten-cell stack was assembled and subjected to more than ten discharge–charge cycles.