Nanorods of cerium oxide as an improved electrocatalyst for enhanced oxygen reduction in single-chambered microbial biofuel cells
This paper reports the synthesis and utilization of cerium oxide (CeO _2 ) nanorods as a cathode catalyst and a potential, low-cost replacement of platinum for microbial biofuel cells (MBFCs). The nanorod electrocatalyst had exhibited significant improvements over Pt nanoparticles in terms of forwar...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2020-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ab653e |
| _version_ | 1797747066834780160 |
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| author | Suparna Das Kingshuk Dutta Apostolos Enotiadis Farhan Papiya Patit P Kundu Swapan K Bhattacharya Emmanuel P Giannelis |
| author_facet | Suparna Das Kingshuk Dutta Apostolos Enotiadis Farhan Papiya Patit P Kundu Swapan K Bhattacharya Emmanuel P Giannelis |
| author_sort | Suparna Das |
| collection | DOAJ |
| description | This paper reports the synthesis and utilization of cerium oxide (CeO _2 ) nanorods as a cathode catalyst and a potential, low-cost replacement of platinum for microbial biofuel cells (MBFCs). The nanorod electrocatalyst had exhibited significant improvements over Pt nanoparticles in terms of forward and backward onset potentials and peak current densities, electronic conductivity, charge transfer resistance, stability in 0.1 M phosphate buffer solution, and cost. It had also demonstrated a more stable forward peak current density at the 100th steady cycle, as well as, higher current density values up to 7,200 s. In addition, the synthesized CeO _2 nanorods also produced ∼10 ^3 times higher exchange current density over the synthesized Pt nanoparticles. Furthermore, in a single-chamber MBFC, the CeO _2 nanorods exhibited higher open circuit voltage (+0.80 V after 14 days), and output current (3613 mAm ^−2 at +0.3 V) and power (1084 mWm ^−2 ) densities in comparison to Pt nanoparticles. |
| first_indexed | 2024-03-12T15:46:49Z |
| format | Article |
| id | doaj.art-397298a1086e4e779179949a5dcbf2cd |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:46:49Z |
| publishDate | 2020-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-397298a1086e4e779179949a5dcbf2cd2023-08-09T15:24:21ZengIOP PublishingMaterials Research Express2053-15912020-01-017101551410.1088/2053-1591/ab653eNanorods of cerium oxide as an improved electrocatalyst for enhanced oxygen reduction in single-chambered microbial biofuel cellsSuparna Das0https://orcid.org/0000-0002-5403-8712Kingshuk Dutta1https://orcid.org/0000-0001-8971-4621Apostolos Enotiadis2Farhan Papiya3Patit P Kundu4Swapan K Bhattacharya5Emmanuel P Giannelis6Department of Chemistry, Jadavpur University , 188, Raja S.C. Mullick Road, Kolkata–700 032, IndiaDepartment of Materials Science and Engineering, Cornell University , Ithaca – 14853, United States of America; Advanced Research School for Technology and Product Simulation (ARSTPS), School for Advanced Research in Polymers (SARP), Central Institute of Plastics Engineering and Technology (CIPET), Guindy, Chennai – 600 032, IndiaDepartment of Materials Science and Engineering, Cornell University , Ithaca – 14853, United States of AmericaDepartment of Polymer Science and Technology, University of Calcutta , 92, A. P. C. Road, Kolkata – 700 009, IndiaDepartment of Chemical Engineering, Indian Institute of Technology, Roorkee – 247 667, IndiaDepartment of Chemistry, Jadavpur University , 188, Raja S.C. Mullick Road, Kolkata–700 032, IndiaDepartment of Materials Science and Engineering, Cornell University , Ithaca – 14853, United States of AmericaThis paper reports the synthesis and utilization of cerium oxide (CeO _2 ) nanorods as a cathode catalyst and a potential, low-cost replacement of platinum for microbial biofuel cells (MBFCs). The nanorod electrocatalyst had exhibited significant improvements over Pt nanoparticles in terms of forward and backward onset potentials and peak current densities, electronic conductivity, charge transfer resistance, stability in 0.1 M phosphate buffer solution, and cost. It had also demonstrated a more stable forward peak current density at the 100th steady cycle, as well as, higher current density values up to 7,200 s. In addition, the synthesized CeO _2 nanorods also produced ∼10 ^3 times higher exchange current density over the synthesized Pt nanoparticles. Furthermore, in a single-chamber MBFC, the CeO _2 nanorods exhibited higher open circuit voltage (+0.80 V after 14 days), and output current (3613 mAm ^−2 at +0.3 V) and power (1084 mWm ^−2 ) densities in comparison to Pt nanoparticles.https://doi.org/10.1088/2053-1591/ab653emicrobial biofuel celloxygen reduction reactioncathode catalystunsupported catalystcerium oxide nanorods |
| spellingShingle | Suparna Das Kingshuk Dutta Apostolos Enotiadis Farhan Papiya Patit P Kundu Swapan K Bhattacharya Emmanuel P Giannelis Nanorods of cerium oxide as an improved electrocatalyst for enhanced oxygen reduction in single-chambered microbial biofuel cells Materials Research Express microbial biofuel cell oxygen reduction reaction cathode catalyst unsupported catalyst cerium oxide nanorods |
| title | Nanorods of cerium oxide as an improved electrocatalyst for enhanced oxygen reduction in single-chambered microbial biofuel cells |
| title_full | Nanorods of cerium oxide as an improved electrocatalyst for enhanced oxygen reduction in single-chambered microbial biofuel cells |
| title_fullStr | Nanorods of cerium oxide as an improved electrocatalyst for enhanced oxygen reduction in single-chambered microbial biofuel cells |
| title_full_unstemmed | Nanorods of cerium oxide as an improved electrocatalyst for enhanced oxygen reduction in single-chambered microbial biofuel cells |
| title_short | Nanorods of cerium oxide as an improved electrocatalyst for enhanced oxygen reduction in single-chambered microbial biofuel cells |
| title_sort | nanorods of cerium oxide as an improved electrocatalyst for enhanced oxygen reduction in single chambered microbial biofuel cells |
| topic | microbial biofuel cell oxygen reduction reaction cathode catalyst unsupported catalyst cerium oxide nanorods |
| url | https://doi.org/10.1088/2053-1591/ab653e |
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