TY - JOUR
T1 - Improved performance Air bio-battery based on efficient oxygen supply with a gas/liquid highly-porous diaphragm cell
AU - Toma, Koji
AU - Seshima, Fumiya
AU - Maruyama, Ayumi
AU - Arakawa, Takahiro
AU - Yano, Kazuyoshi
AU - Mitsubayashi, Kohji
N1 - Funding Information:
This work was partly supported by a grant from Japan IDDM network and the Ministry of Education, Culture, Sports, Science and Technology ( MEXT , Japan) Special Funds for “Cooperative Research Project of Research Center for Biomedical Engineering”.
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2019/1/15
Y1 - 2019/1/15
N2 - Performance of a glucose-driven bio-battery was improved by enhancing electrode characteristics and oxygen supply efficiency to a cathode. The bio-battery generates electric power from glucose through three enzymatic reactions using glucose dehydrogenase, diaphorase and bilirubin oxidase. A flexible and thin Pt electrode was employed instead of a glassy carbon (GC) electrode on which enzymes, a coenzyme, and mediators were immobilized by layer-by-layer method. The maximum current and power densities of the constructed bio-battery were 257 ± 22 μA/cm 2 and 86 ± 3 μW/cm 2 , respectively, in 5 mM glucose solution. In addition, a newly designed compact gas/liquid diaphragm cell, which allowed to reduce the internal resistance by shortening the anode-cathode distance and enhance oxygen supply to a cathode using a highly-porous cotton mesh diaphragm, was implemented to the bio-battery to develop a high-performance Air bio-battery. As a result, improved Air bio-battery showed the maximum current and power densities of 451 ± 27 μA/cm 2 and 162 ± 7 μW/cm 2 , which was 3.6-fold improvement from the previous GC electrode-based bio-battery. In addition, continuous operation for 210 min revealed high stability of power generation as it decreased by 3.3% at the end of operation. Additional supply of oxygen to a cathode exhibited proportional increase of the power density to the oxygen concentration, which demonstrates a promising potential of Air bio-battery for a high-performance and continuous powering device.
AB - Performance of a glucose-driven bio-battery was improved by enhancing electrode characteristics and oxygen supply efficiency to a cathode. The bio-battery generates electric power from glucose through three enzymatic reactions using glucose dehydrogenase, diaphorase and bilirubin oxidase. A flexible and thin Pt electrode was employed instead of a glassy carbon (GC) electrode on which enzymes, a coenzyme, and mediators were immobilized by layer-by-layer method. The maximum current and power densities of the constructed bio-battery were 257 ± 22 μA/cm 2 and 86 ± 3 μW/cm 2 , respectively, in 5 mM glucose solution. In addition, a newly designed compact gas/liquid diaphragm cell, which allowed to reduce the internal resistance by shortening the anode-cathode distance and enhance oxygen supply to a cathode using a highly-porous cotton mesh diaphragm, was implemented to the bio-battery to develop a high-performance Air bio-battery. As a result, improved Air bio-battery showed the maximum current and power densities of 451 ± 27 μA/cm 2 and 162 ± 7 μW/cm 2 , which was 3.6-fold improvement from the previous GC electrode-based bio-battery. In addition, continuous operation for 210 min revealed high stability of power generation as it decreased by 3.3% at the end of operation. Additional supply of oxygen to a cathode exhibited proportional increase of the power density to the oxygen concentration, which demonstrates a promising potential of Air bio-battery for a high-performance and continuous powering device.
KW - Air bio-battery
KW - Bio-fuel cell
KW - Enzyme
KW - Gas/liquid diaphragm
KW - Glucose
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U2 - 10.1016/j.bios.2018.09.091
DO - 10.1016/j.bios.2018.09.091
M3 - Article
C2 - 30391786
AN - SCOPUS:85055748962
SN - 0956-5663
VL - 124-125
SP - 253
EP - 259
JO - Biosensors and Bioelectronics
JF - Biosensors and Bioelectronics
ER -