Sökning: WFRF:(Sani Rajesh K.)
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Graphene as thinnes...
Graphene as thinnest coating on copper electrodes in microbial methanol fuel cells
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- Islam, Jamil (författare)
- Department Civil and Environmental Engineering, South Dakota School of Mines and Technology, SD, Rapid City, United States; BuGReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, United States
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- Obulisamy, Parthiba Karthikeyan (författare)
- Department Civil and Environmental Engineering, South Dakota School of Mines and Technology, SD, Rapid City, United States; BuGReMeDEE Consortium, South Dakota School of Mines and Technology, Rapid City, United States
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- Upadhyayula, Venkata K.K. (författare)
- Umeå universitet,Kemiska institutionen
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- Dalton, Alan B. (författare)
- Department of Physics and Astronomy, University of Sussex, Brighton, United Kingdom
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- Ajayan, Pulickel M. (författare)
- Department of Materials Science and Nanoengineering, Rice University, TX, Houston, United States
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- Rahman, Muhammad M. (författare)
- Department of Materials Science and Nanoengineering, Rice University, TX, Houston, United States
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- Tripathi, Manoj (författare)
- Department of Physics and Astronomy, University of Sussex, Brighton, United Kingdom
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- Sani, Rajesh Kumar (författare)
- Department Civil and Environmental Engineering, South Dakota School of Mines and Technology, SD, Rapid City, United States; BuGReMeDEE Consortium, South Dakota School of Mines and Technology, 501 E St Joseph St, SD, Rapid City, United States; 2Dimensional Materials for Biofilm Engineering Science and Technology (2DBEST) Center, South Dakota School of Mines and Technology, SD, Rapid City, United States
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- Gadhamshetty, Venkataramana (författare)
- Department Civil and Environmental Engineering, South Dakota School of Mines and Technology, SD, Rapid City, United States; BuGReMeDEE Consortium, South Dakota School of Mines and Technology, 501 E St Joseph St, SD, Rapid City, United States; 2Dimensional Materials for Biofilm Engineering Science and Technology (2DBEST) Center, South Dakota School of Mines and Technology, SD, Rapid City, United States
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(creator_code:org_t)
- 2022-12-19
- 2023
- Engelska.
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Ingår i: ACS Nano. - : American Chemical Society (ACS). - 1936-0851 .- 1936-086X. ; 17:1, s. 137-145
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Dehydrogenation of methanol (CH3OH) into direct current (DC) in fuel cells can be a potential energy conversion technology. However, their development is currently hampered by the high cost of electrocatalysts based on platinum and palladium, slow kinetics, the formation of carbon monoxide intermediates, and the requirement for high temperatures. Here, we report the use of graphene layers (GL) for generating DC electricity from microbially driven methanol dehydrogenation on underlying copper (Cu) surfaces. Genetically tractable Rhodobacter sphaeroides 2.4.1 (Rsp), a nonarchetypical methylotroph, was used for dehydrogenating methanol at the GL-Cu surfaces. We use electrochemical methods, microscopy, and spectroscopy methods to assess the effects of GL on methanol dehydrogenation by Rsp cells. The GL-Cu offers a 5-fold higher power density and 4-fold higher current density compared to bare Cu. The GL lowers charge transfer resistance to methanol dehydrogenation by 4 orders of magnitude by mitigating issues related to pitting corrosion of underlying Cu surfaces. The presented approach for catalyst-free methanol dehydrogenation on copper electrodes can improve the overall sustainability of fuel cell technologies.
Ämnesord
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Nyckelord
- graphene
- methanol dehydrogenation
- methylotrophs
- microbial corrosion
- surface science
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