Articles | Volume 10, issue 1
Earth Syst. Dynam., 10, 1–7, 2019
https://doi.org/10.5194/esd-10-1-2019

Special issue: ESD Ideas

Earth Syst. Dynam., 10, 1–7, 2019
https://doi.org/10.5194/esd-10-1-2019

ESD Ideas 04 Jan 2019

ESD Ideas | 04 Jan 2019

ESD Ideas: Photoelectrochemical carbon removal as negative emission technology

Matthias M. May and Kira Rehfeld

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Latest update: 12 Jun 2021
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Short summary
Current CO2 emission rates are incompatible with the 2 °C target for global warming. Negative emission technologies are therefore an important basis for climate policy scenarios. We show that photoelectrochemical CO2 reduction might be a viable, high-efficiency alternative to biomass-based approaches, which reduce competition for arable land. To develop them, chemical reactions have to be optimized for CO2 removal, which deviates from energetic efficiency optimization in solar fuel applications.
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