Thermodynamic Analysis of the Efficiency of Photoelectrochemical CO2 Reduction to Ethanol

Evangelos Kalamaras; M. Mercedes Maroto-Valer; John M. Andresen; Huizhi Wang; Jin Xuan

doi:10.1016/j.egypro.2019.01.204

Thermodynamic Analysis of the Efficiency of Photoelectrochemical CO₂ Reduction to Ethanol

Evangelos Kalamaras, M. Mercedes Maroto-Valer, John M. Andresen, Huizhi Wang, Jin Xuan

Research output: Contribution to journal › Conference article › peer-review

3 Citations (Scopus)

138 Downloads (Pure)

Abstract

Over the last decades, long-term fossil fuel shortage and growing global demand for energy ignited an interest in developing alternative and "green" approaches for fuel production. One promising way to generate solar fuels is photocatalytic or photoelectrochemical (PEC) CO2 reduction. Although various research efforts were undertaken to improve the efficiency and stability of PEC devices, many questions remain that have not been adequately answered due to lack of understanding of the reaction mechanisms and underlying limiting factors. In this study, we illustrate the thermodynamics of single or double-junction photo-absorbing materials. Finally, this research work investigated the efficiency limits of solar-driven CO2 conversion into ethanol as a two-step process with formate as intermediate.

Original language	English
Pages (from-to)	767-772
Number of pages	6
Journal	Energy Procedia
Volume	158
DOIs	https://doi.org/10.1016/j.egypro.2019.01.204
Publication status	Published - Feb 2019

Keywords

CO2 conversion
Energy storage
Photoelectrochemical
Solar fuels
Solar-to-fuel efficiency

ASJC Scopus subject areas

Energy(all)

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10.1016/j.egypro.2019.01.204

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© 2019 The Authors. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/) Peer-review under responsibility of the scientific committee of ICAE2018 – The 10th International Conference on Applied Energy.
Final published version, 736 KBLicence: CC BY-NC-ND

Cite this

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title = "Thermodynamic Analysis of the Efficiency of Photoelectrochemical CO2 Reduction to Ethanol",

abstract = "Over the last decades, long-term fossil fuel shortage and growing global demand for energy ignited an interest in developing alternative and {"}green{"} approaches for fuel production. One promising way to generate solar fuels is photocatalytic or photoelectrochemical (PEC) CO2 reduction. Although various research efforts were undertaken to improve the efficiency and stability of PEC devices, many questions remain that have not been adequately answered due to lack of understanding of the reaction mechanisms and underlying limiting factors. In this study, we illustrate the thermodynamics of single or double-junction photo-absorbing materials. Finally, this research work investigated the efficiency limits of solar-driven CO2 conversion into ethanol as a two-step process with formate as intermediate.",

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AU - Kalamaras, Evangelos

AU - Maroto-Valer, M. Mercedes

AU - Andresen, John M.

AU - Wang, Huizhi

AU - Xuan, Jin

PY - 2019/2

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N2 - Over the last decades, long-term fossil fuel shortage and growing global demand for energy ignited an interest in developing alternative and "green" approaches for fuel production. One promising way to generate solar fuels is photocatalytic or photoelectrochemical (PEC) CO2 reduction. Although various research efforts were undertaken to improve the efficiency and stability of PEC devices, many questions remain that have not been adequately answered due to lack of understanding of the reaction mechanisms and underlying limiting factors. In this study, we illustrate the thermodynamics of single or double-junction photo-absorbing materials. Finally, this research work investigated the efficiency limits of solar-driven CO2 conversion into ethanol as a two-step process with formate as intermediate.

AB - Over the last decades, long-term fossil fuel shortage and growing global demand for energy ignited an interest in developing alternative and "green" approaches for fuel production. One promising way to generate solar fuels is photocatalytic or photoelectrochemical (PEC) CO2 reduction. Although various research efforts were undertaken to improve the efficiency and stability of PEC devices, many questions remain that have not been adequately answered due to lack of understanding of the reaction mechanisms and underlying limiting factors. In this study, we illustrate the thermodynamics of single or double-junction photo-absorbing materials. Finally, this research work investigated the efficiency limits of solar-driven CO2 conversion into ethanol as a two-step process with formate as intermediate.

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