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A Gross‐Margin Model for Defining Technoeconomic Benchmarks in the Electroreduction of CO 2
Author(s) -
Verma Sumit,
Kim Byoungsu,
Jhong HueiRu “Molly”,
Ma Sichao,
Kenis Paul J. A.
Publication year - 2016
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201600394
Subject(s) - methanol , formic acid , catalysis , carbon monoxide , methane , chemistry , ethylene , faraday efficiency , organic chemistry , electrochemistry , electrode
We introduce a gross‐margin model to evaluate the technoeconomic feasibility of producing different C 1 –C 2 chemicals such as carbon monoxide, formic acid, methanol, methane, ethanol, and ethylene through the electroreduction of CO 2 . Key performance benchmarks including the maximum operating cell potential ( V max ), minimum operating current density ( j min ), Faradaic efficiency (FE), and catalyst durability ( t catdur ) are derived. The V max 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 (CH 3 OH, CH 4 , C 2 H 5 OH, C 2 H 4 ) with a more feasible chemical (CO, HCOOH) can be a strategy to offset the V max requirements for individual products. Other performance requirements such as j min and t catdur are also derived, and the feasibility of alternative process designs and operating conditions are evaluated.