Carbon nanotube based anodes in a miniaturized microbial fuel cell (MFC) towards high power density and efficiency

Hao Ren, Junseok Chae, Soonjae Pyo, Jae Ik Lee, Jongbaeg Kim, Forrest S. Gittleson, D. Andre

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Carbon nanotubes (CNTs) have unique physical / chemical properties including a high surface-area-to-volume ratio, high electrical/thermal conductivity, excellent electrochemical characteristics, and mechanical and chemical stability. This work utilizes CNTs in miniaturized microbial fuel cells (MFCs) to reduce the high internal resistance, one of the significant bottlenecks to improving the power density of the MFC. Three types of CNT electrodes, VACNT (Vertically Aligned Carbon Nano-Tube), RACNT (Randomly Aligned Carbon Nano-Tube), and LBL (Layer-By-Layer) CNT, were evaluated as anodes for miniaturized MFCs, demonstrating biocompatibility, high power density and efficiency. Areal and volumetric power densities of 113 μW/cm2 and 4.52 mW/cm3, respectively, are presented; the highest ever reported among all miniaturized MFCs with CNT anodes to date more than 11.5 times the previous record. Additionally, a coulombic efficiency (CE) of 60%-80% is achieved, significantly higher than existing miniaturized MFCs. High power density and CE may support the miniaturized MFC as a strong candidate in sub-100 μW applications.

Original languageEnglish
Title of host publicationNANOMED 2012 - 6th IEEE International Conference on Nano/Molecular Medicine and Engineering
Pages15-20
Number of pages6
DOIs
Publication statusPublished - 2012
Event6th IEEE International Conference on Nano/Molecular Medicine and Engineering, NANOMED 2012 - Bangkok, Thailand
Duration: 2012 Nov 42012 Nov 7

Publication series

NameIEEE International Conference on Nano/Molecular Medicine and Engineering, NANOMED
ISSN (Print)2159-6964
ISSN (Electronic)2159-6972

Other

Other6th IEEE International Conference on Nano/Molecular Medicine and Engineering, NANOMED 2012
CountryThailand
CityBangkok
Period12/11/412/11/7

All Science Journal Classification (ASJC) codes

  • Molecular Medicine
  • Biomedical Engineering
  • Microbiology (medical)

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