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Stabilization of a co-bound intermediate via molecular tuning promotes CO2-to-ethylene conversion

Patent ·
OSTI ID:2222302
Aspects included herein include an electrolytic system for electrochemical reduction of carbon dioxide, the system comprising: a cathode comprising: a porous gas-diffusion membrane permeable to CO2; an electrocatalyst layer adjacent to a second side of the gas-diffusion membrane; the electrocatalyst layer comprising: an electrically conductive catalyst; and a selectivity-determining organic material attached to at least a portion of the electrically conductive catalyst; wherein: the organic material is formed of a plurality of oligomers; each oligomer comprises a plurality of covalently bonded base units; each base unit comprises at least one heterocyclic group having at least one nitrogen in its structure; and an anion exchange membrane adjacent to the electrocatalyst layer and positioned between the anode and the cathode; wherein anion exchange membrane is characterized by anion conductivity and the cathode is in ionic communication with the anode via the anion exchange membrane.
Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States); California Institute of Technology (CalTech), Pasadena, CA (United States); Univ. of Toronto, ON (Canada)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-06CH11357; SC0004993
Assignee:
California Institute of Technology (Pasadena, CA); The Governing Council of the University of Toronto (Toronto, CA)
Patent Number(s):
11,746,426
Application Number:
16/925,833
OSTI ID:
2222302
Country of Publication:
United States
Language:
English

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  • Barton Cole, Emily; Lakkaraju, Prasad S.; Rampulla, David M.
  • Journal of the American Chemical Society, Vol. 132, Issue 33, p. 11539-11551 https://doi.org/10.1021/ja1023496
journal August 2010
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