关键词: 酶生物燃料电池, 酶电极, 氧化还原酶, 电子传递, 酶的固定化

Abstract: The recent research progress in enzymatic electrodes，including enzymatic species，mediator and direct electron transfer electrode and enzyme immobilization，are illustrated. For the purpose of improving conversion efficiency of biological fuel cell，the influences of various factors are analyzed. Different redox enzymes should be used to enhance electron transfer，by using small molecules or redox polymer mediators current density can be increased，the improvement of direct electron transfer can be achieved by modification with some conductive polymer materials，as well as the physical or chemical enzyme immobilization methods can dramatically influence the stability of enzymes. Therefore，searching for the new technologies and new materials to build enzymatic electrode with high enzyme activity and electron transfer efficiency will be the direction of future development in this field.

Key words: enzymatic biofuel cells, enzyme electrode, oxidoreductase, electron transfer, enzyme immobilization