Maximizing Current Density for Electrochemical Conversion of Flue Gas Carbon Dioxide to Ethanol Email Page
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Performer:  Oak Ridge National Laboratory (ORNL) Location:  Oak Ridge, Tennessee
Project Duration:  08/15/2017 – 07/31/2018 Award Number:  FWP-FEAA132
Technology Area:  Carbon Use and Reuse Total Award Value:  $200,000
Key Technology:  Chemical Conversion DOE Share:  $200,000
Performer Share:  $0

ORNL catalyst made of copper  nanoparticles (seen as sphere)  embedded in carbon nanospikes
ORNL catalyst made of copper nanoparticles (seen as sphere) embedded in carbon nanospikes

Project Description

Oak Ridge National Laboratory (ORNL) will advance their recently discovered novel electrochemical catalyst that can be used to directly convert carbon dioxide (CO2) to ethanol. ORNL found in the first lab-scale proof-of-concept implementation that a solution of CO2 dissolved in water turned into ethanol with a yield of 63 percent; typically, this type of electrochemical reaction results in a mix of various products in lesser amounts. The catalyst’s novelty lies in its nanoscale structure and consists of copper nanoparticles embedded in carbon spikes and avoids the use of expensive or rare metals, such as platinum, that limit the economic viability of many catalysts. The carbon nanospikes are dense, providing numerous reaction sites (approximately 10 trillion spikes per 8.5-inch by 11-inch sheet of paper) that concentrate electrochemical reactivity at the tip of each spike. ORNL will investigate strategies to maximize the catalyst’s current density for the production of ethanol, including implementation of an electrode with an enhanced electrochemical surface area, application of the catalyst to a vapor-phase cell configured using gas diffusion electrodes, and the evaluation of alternative electrolytes. Laboratory-scale electrochemical cells will be constructed for testing the catalyst with simulated flue gas to evaluate the impact of contaminants and optimize performance.

Project Benefits

This novel nano-structured catalyst, consisting of low-cost readily available materials and an ability to operate at room temperature, offers an economic strategy for the use of CO2 captured from coal-fired power plant flue gas in the production of ethanol, a clean-burning particulate-free fuel.

Presentations, Papers, and Publications

Contact Information

Federal Project Manager Sai Gollakota:
Technology Manager Lynn Brickett:
Principal Investigator Adam Rondinone: