Recoverable hybrid enzymatic biofuel cell with molecular oxygen-independence.
Enzymatic biofuel cells (EBFCs) have drawn great attentions because of its potential in energy conversion. However, designing of highly efficient EBFCs which can adapt to the anaerobic system is still a great challenge. In this study, we propose a novel hybrid enzymatic biofuel cell (HEBFC) which was fabricated by a glucose dehydrogenase modified bioanode and a solid-state silver oxide/silver (Ag2O/Ag) cathode. The as-assembled HEBFC exhibited an open circuit potential of 0.59V and a maximum power output of 0.281mWcm(-2) at 0.34V in air saturated buffer. Especially, due to the introduction of Ag2O/Ag, our HEBFC could also operate under anaerobic condition, while the maximum power output would reach to 0.275mWcm(-2) at 0.34V. Furthermore, our HEBFC had stable cycle operation and could keep high power output for a certain time as the result of the regeneration of Ag2O. Our work provides a new concept to develop EBFCs for efficient energy conversion in the future.
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; University of Chinese Academy of Sciences, Beijing 100049, China.
You
Y
Yu
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Miao
M
Xu
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China.
Lu
L
Bai
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Lei
L
Han
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, Jilin 130022, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: dongsj@ciac.ac.cn.
Shaojun
S
Dong
D000693:Anaerobiosis; D001674:Bioelectric Energy Sources; D015374:Biosensing Techniques; D004800:Enzymes, Immobilized / Q000737:chemistry*; D005947:Glucose / Q000737:chemistry; D042843:Glucose 1-Dehydrogenase / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry; D010100:Oxygen / Q000737:chemistry; D012834:Silver / Q000737:chemistry
D004800:Enzymes, Immobilized; D037742:Nanotubes, Carbon; D012834:Silver; D042843:Glucose 1-Dehydrogenase; D005947:Glucose; D010100:Oxygen
Ag(2)O/Ag; Biofuel cell; Molecular oxygen-independence; Recoverable