Anionic Metal-Organic Framework Derived Cu Catalyst for Selective CO 2 Electroreduction to Hydrocarbons

• Published in: Small (Weinheim an der Bergstrasse, Germany) Germany), 2024-11, Vol.20 (46), p.e2405051
• Main Authors: Wen, Chun Fang, Yang, Shuang, He, Jing Jing, Niu, Qiang, Liu, Peng Fei, Yang, Hua Gui
• Format: Article
• Language: English
• ISSN: 1613-6810; 1613-6829
• DOI: 10.1002/smll.202405051

Metal-organic frameworks (MOFs)-related Cu materials are promising candidates for promoting electrochemical CO reduction to produce valuable chemical feedstocks. However, many MOF materials inevitable undergo reconstruction under reduction conditions; therefore, exploiting the restructuring of MOF materials is of importance for the rational design of high-performance catalyst targeting multi-carbon products (C ). Herein, a facile solvent process is choosed to fabricate HKUST-1 with an anionic framework (a-HKUST-1) and utilize it as a pre-catalyst for alkaline CO RR. The a-HKUST-1 catalyst can be electrochemically reduced into Cu with significant structural reconstruction under operating reaction conditions. The anionic HKUST-1 derived Cu catalyst (aHD-Cu) delivers a FE of 56% and FE of ≈80% at -150 mA cm in alkaline electrolyte. The resulting aHD-Cu catalyst has a high electrochemically active surface area and low coordinated sites. In situ Raman spectroscopy indicates that the aHD-Cu surface displays higher coverage of *CO intermediates, which favors the production of hydrocarbons.