Copper Aluminum Layered Double Hydroxides with Different Compositions and Morphologies as Electrocatalysts for the Carbon Dioxide Reduction Reaction

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Electrochemical CO2 reduction (CO2RR) is a key technology to convert greenhouse gas CO2 to value-added products, such as CO and formic acid (HCOOH). In the present study, two-dimensional Cu- and Al-based layered double hydroxides (Cu−Al/LDHs) were applied as CO2RR catalysts. The catalysts were synthesized using a simple co-precipitation method employing sodium carbonate solutions with different pH and synthesis temperatures. The elemental ratio of Cu and Al, and sheet size were controlled. The most active Cu−Al/LDH showed a faradaic efficiency for CO generation of 42 % and one for formate generation of 22 % at the current density of 50 mA using a gas diffusion electrode system under galvanostatic conditions. Our result indicates that the sheet size of the LDH sheet is a critical parameter for determining CO2RR activity.

Original languageEnglish
Article numbere202102340
JournalChemSusChem
Volume15
Issue number2
DOIs
Publication statusPublished - 2022 Jan 21

Fingerprint

Dive into the research topics of 'Copper Aluminum Layered Double Hydroxides with Different Compositions and Morphologies as Electrocatalysts for the Carbon Dioxide Reduction Reaction'. Together they form a unique fingerprint.

Cite this