Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Aprotic phosphonium‐based ionic liquid as electrolyte for high CO2 electroreduction to oxalate
Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering Chinese Academy of Sciences, Beijing China; School of Future Technology University of Chinese Academy of Sciences, Beijing China.
Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering Chinese Academy of Sciences, Beijing China.ORCID iD: 0000-0002-0070-6711
Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering Chinese Academy of Sciences, Beijing China.
Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering Chinese Academy of Sciences, Beijing China.
Show others and affiliations
2023 (English)In: AIChE Journal, ISSN 0001-1541, E-ISSN 1547-5905, Vol. 69, no 2, article id e17859Article in journal (Refereed) Published
Abstract [en]

In this study, a new CO2 electroreduction electrolyte system consisting of tetrabutylphosphonium 4-(methoxycarbonyl) phenol ([P4444][4-MF-PhO]) ionic liquid (IL) and acetonitrile (AcN) was designed to produce oxalate, and the electroreduction mechanism was studied. The results show that using the new IL-based electrolyte, the electroreduction system exhibits 93.8% Faradaic efficiency and 12.6 mA cm−2 partial current density of oxalate at −2.6 V. The formation rate of oxalate is 234.4 μmol cm−2 h−1, which is better than those reported in the literature. The mechanism study using density functional theory (DFT) calculations reveals that [P4444][4-MF-PhO] can effectively activate CO2 molecule through ester and phenoxy double active sites. In addition, in the phosphonium-based ionic environment, the potential barriers of the key intermediates *CO2 and *C2O42− are reduced by the induced electric field, which greatly facilitates the activation and conversion of CO2 molecule to oxalate.

Place, publisher, year, edition, pages
John Wiley & Sons, 2023. Vol. 69, no 2, article id e17859
Keywords [en]
aprotic, CO2 electroreduction, oxalate, phosphonium-based ionic liquid
National Category
Polymer Chemistry Condensed Matter Physics
Research subject
Energy Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-92740DOI: 10.1002/aic.17859ISI: 000846452500001Scopus ID: 2-s2.0-85137232532OAI: oai:DiVA.org:ltu-92740DiVA, id: diva2:1692134
Note

Validerad;2023;Nivå 2;2023-04-19 (hanlid);

Funder: National Key R&D Program of China (2020YFA0710200); National Natural Science Foundation of China (21838010, 22122814); Innovation Academy for Green Manufacture (IAGM2020C14); Instrument Developing Project of the Chinese Academy of Sciences (YJKYYQ20200062)

Available from: 2022-09-01 Created: 2022-09-01 Last updated: 2023-09-05Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records

Li, FangfangJi, Xiaoyan

Search in DiVA

By author/editor
Zeng, ShaojuanLi, FangfangJi, XiaoyanZhang, Xiangping
By organisation
Energy Science
In the same journal
AIChE Journal
Polymer ChemistryCondensed Matter Physics

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 308 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf