Details

Autor(en) / Beteiligte

• Wang, Xue
• Wang, Ziyun
• Zhuang, Tao-Tao
• Dinh, Cao-Thang
• Li, Jun
• Nam, Dae-Hyun
• Li, Fengwang
• Huang, Chun-Wei
• Tan, Chih-Shan
• Chen, Zitao
• Chi, Miaofang
• Gabardo, Christine M.
• Seifitokaldani, Ali
• Todorović, Petar
• Proppe, Andrew
• Pang, Yuanjie
• Kirmani, Ahmad R.
• Wang, Yuhang
• Ip, Alexander H.
• Richter, Lee J.
• Scheffel, Benjamin
• Xu, Aoni
• Lo, Shen-Chuan
• Kelley, Shana O.
• Sinton, David
• Sargent, Edward H.

Titel

Efficient upgrading of CO to C3 fuel using asymmetric C-C coupling active sites

Ist Teil von

• Nature communications, 2019-11, Vol.10 (1), p.1-7, Article 5186

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Abstract The electroreduction of C 1 feedgas to high-energy-density fuels provides an attractive avenue to the storage of renewable electricity. Much progress has been made to improve selectivity to C 1 and C 2 products, however, the selectivity to desirable high-energy-density C 3 products remains relatively low. We reason that C 3 electrosynthesis relies on a higher-order reaction pathway that requires the formation of multiple carbon-carbon (C-C) bonds, and thus pursue a strategy explicitly designed to couple C 2 with C 1 intermediates. We develop an approach wherein neighboring copper atoms having distinct electronic structures interact with two adsorbates to catalyze an asymmetric reaction. We achieve a record n -propanol Faradaic efficiency (FE) of (33 ± 1)% with a conversion rate of (4.5 ± 0.1) mA cm −2 , and a record n -propanol cathodic energy conversion efficiency (EE cathodic half-cell ) of 21%. The FE and EE cathodic half-cell represent a 1.3× improvement relative to previously-published CO-to- n -propanol electroreduction reports.