Superior efficient rechargeable lithium–air batteries using a bifunctional biological enzyme catalyst

摘要

A biological enzyme - Laccase from Trametes versicolor (LacTv) - has been recognized as a highly efficient bifunctional catalyst in a rechargeable lithium-air battery system whose intrinsic pH change during discharge/charge can regulate the in situ recovery of the enzyme, making them an in situ synergistic match, enabling the battery to offer an extraordinarily flat discharge voltage of similar to 3.75 V for 120 h, and remarkable durability (cycling steadily over 1100 h) with a narrow voltage gap of similar to 0.24 V.