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High power generation by a membraneless single chamber microbial fuel cell (SCMFC) using enzymatic Bilirubin oxidase (BOx) Air-Breathing Cathode

High power generation by a membraneless single chamber microbial fuel cell (SCMFC) using enzymatic Bilirubin oxidase (BOx) Air-Breathing Cathode
High power generation by a membraneless single chamber microbial fuel cell (SCMFC) using enzymatic Bilirubin oxidase (BOx) Air-Breathing Cathode
In this work, for the first time, we showed the successful utilization of enzymatic-based (bilirubin oxidase, BOx) air-breathing gas-diffusion (ABGD-BOx) cathode in membraneless single chamber microbial fuel cells (SCMFCs). At pH range of 7.2–7.5, the cathode open circuit potentials (OCPs) achieved were in the range of 490–535 mV (vs. sat. Ag/AgCl) with the anodic OCP being between −495 mV and −530 mV (vs. sat. Ag/AgCl). The highest overall open circuit voltage (OCV) of the SCMFCs (1.05 V) fed with phosphate buffer solution (PBS) and sodium acetate (NaOAc) was achieved after 12–24 hour of operation. Polarization curves of the ABGD-BOx cathode showed lower overpotential with an advantage of up to 250 mV compared to the traditional platinum Pt-based cathode, and possessed a great potential to replace the noble metal-based cathodes in MFCs. High power generation of 2Wm−2 (200 μW cm−2, referred to cathode geometric surface area) was achieved in SCMFCs with the ABGD-BOx cathode, which was the highest power generation reported for SCMFCs with a volume greater than 100 mL.

0013-4651
H720-H726
Santoro, Carlo
03549f6d-d57f-4d79-8bae-2d9271aa7371
Babanova, Sofia
8ce6e3f8-d047-4e85-9bcd-b6a5dbe6a36f
Atanassov, Plamen
a1fe7e9b-9386-448a-90a8-a870c3163922
Li, Baikun
12bb227e-24b7-4c2e-bc6f-c29200d0aa4a
Ieropoulos, Ioannis
6c580270-3e08-430a-9f49-7fbe869daf13
Cristiani, Pierangela
3cb7a0bc-6dd3-4514-ad96-60dc3578ce80
Santoro, Carlo
03549f6d-d57f-4d79-8bae-2d9271aa7371
Babanova, Sofia
8ce6e3f8-d047-4e85-9bcd-b6a5dbe6a36f
Atanassov, Plamen
a1fe7e9b-9386-448a-90a8-a870c3163922
Li, Baikun
12bb227e-24b7-4c2e-bc6f-c29200d0aa4a
Ieropoulos, Ioannis
6c580270-3e08-430a-9f49-7fbe869daf13
Cristiani, Pierangela
3cb7a0bc-6dd3-4514-ad96-60dc3578ce80

Santoro, Carlo, Babanova, Sofia, Atanassov, Plamen, Li, Baikun, Ieropoulos, Ioannis and Cristiani, Pierangela (2013) High power generation by a membraneless single chamber microbial fuel cell (SCMFC) using enzymatic Bilirubin oxidase (BOx) Air-Breathing Cathode. Journal of the Electrochemical Society, 160 (10), H720-H726. (doi:10.1149/2.058310jes).

Record type: Article

Abstract

In this work, for the first time, we showed the successful utilization of enzymatic-based (bilirubin oxidase, BOx) air-breathing gas-diffusion (ABGD-BOx) cathode in membraneless single chamber microbial fuel cells (SCMFCs). At pH range of 7.2–7.5, the cathode open circuit potentials (OCPs) achieved were in the range of 490–535 mV (vs. sat. Ag/AgCl) with the anodic OCP being between −495 mV and −530 mV (vs. sat. Ag/AgCl). The highest overall open circuit voltage (OCV) of the SCMFCs (1.05 V) fed with phosphate buffer solution (PBS) and sodium acetate (NaOAc) was achieved after 12–24 hour of operation. Polarization curves of the ABGD-BOx cathode showed lower overpotential with an advantage of up to 250 mV compared to the traditional platinum Pt-based cathode, and possessed a great potential to replace the noble metal-based cathodes in MFCs. High power generation of 2Wm−2 (200 μW cm−2, referred to cathode geometric surface area) was achieved in SCMFCs with the ABGD-BOx cathode, which was the highest power generation reported for SCMFCs with a volume greater than 100 mL.

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Published date: 16 August 2013

Identifiers

Local EPrints ID: 454620
URI: http://eprints.soton.ac.uk/id/eprint/454620
ISSN: 0013-4651
PURE UUID: 41c30c24-7b17-497b-9eec-525ba2fdcc95
ORCID for Ioannis Ieropoulos: ORCID iD orcid.org/0000-0002-9641-5504

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Date deposited: 17 Feb 2022 17:39
Last modified: 17 Mar 2024 04:10

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Contributors

Author: Carlo Santoro
Author: Sofia Babanova
Author: Plamen Atanassov
Author: Baikun Li
Author: Pierangela Cristiani

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