A gross-margin model for defining technoeconomic benchmarks in the electroreduction of CO2

Sumit Verma, Byoungsu Kim, Huei Ru Molly Jhong, Sichao Ma, Paul J.A. Kenis

Research output: Contribution to journalArticlepeer-review

Abstract

We introduce a gross-margin model to evaluate the technoeconomic feasibility of producing different C1–C2 chemicals such as carbon monoxide, formic acid, methanol, methane, ethanol, and ethylene through the electroreduction of CO2. Key performance benchmarks including the maximum operating cell potential (Vmax), minimum operating current density (jmin), Faradaic efficiency (FE), and catalyst durability (tcatdur) are derived. The Vmax values obtained for the different chemicals indicate that CO and HCOOH are the most economically viable products. Selectivity requirements suggest that the coproduction of an economically less feasible chemical (CH3OH, CH4, C2H5 OH, C2 H4) with a more feasible chemical (CO, HCOOH) can be a strategy to offset the Vmax requirements for individual products. Other performance requirements such as jmin and tcatdur are also derived, and the feasibility of alternative process designs and operating conditions are evaluated.

Original languageEnglish (US)
Pages (from-to)1972-1979
Number of pages8
JournalChemSusChem
Volume9
Issue number15
DOIs
StatePublished - Aug 9 2016

Keywords

  • Carbon dioxide fixation
  • Electrochemistry
  • Electroreduction
  • Energy conversion
  • Renewable resources

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

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