3 - Catalytic cathode nanomaterials for rechargeable lithium–air batteries: status and challenges

Abstract

The exceptionally high energy density of rechargeable Li–air batteries suggests they have a great potential to enhance the gravimetric energy density of fully packaged Li-ion batteries by two to three times. Rechargeable Li–air batteries have received considerable attention over recent years, but nevertheless, this cutting-edge technology requires significant research in a variety of fields before their viable commercial implementation. Most of the current limitations in Li–air battery development are in the cathode and the materials used therein. This chapter provides an overview of recent progress in the development of cathode catalysts and support materials for rechargeable Li–air batteries, including experimental and theoretical aspects devoted to the understanding of the oxygen reduction and oxygen evolution reactions. Recent advancements in relevant topics at Newcastle are highlighted and new directions and future perspectives are outlined.