Articles | Volume 10, issue 1
Earth Syst. Dynam., 10, 1–7, 2019

Special issue: ESD Ideas

Earth Syst. Dynam., 10, 1–7, 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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Cited articles

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Special issue
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.
Final-revised paper