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Title: Enhancing Activity and Reducing Cost for Electrochemical Reduction of CO2 by Supporting Palladium on Metal Carbides

Journal Article · · Angewandte Chemie
 [1];  [2];  [3];  [3];  [3];  [3];  [4];  [4]; ORCiD logo [2]
  1. Tianjin Univ., Tianjin (People's Republic of China); Columbia Univ., New York, NY (United States)
  2. Columbia Univ., New York, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
  3. Columbia Univ., New York, NY (United States)
  4. Tianjin Univ., Tianjin (People's Republic of China)
+ Show Author Affiliations

Abstract Electrochemical CO 2 reduction reaction (CO 2 RR) with renewable electricity is a potentially sustainable method to reduce CO 2 emissions. Palladium supported on cost‐effective transition‐metal carbides (TMCs) are studied to reduce the Pd usage and tune the activity and selectivity of the CO 2 RR to produce synthesis gas, using a combined approach of studying thin films and practical powder catalysts, in situ characterization, and density functional theory (DFT) calculations. Notably, Pd/TaC exhibits higher CO 2 RR activity, stability and CO Faradaic efficiency than those of commercial Pd/C while significantly reducing the Pd loading. In situ measurements confirm the transformation of Pd into hydride (PdH) under the CO 2 RR environment. DFT calculations reveal that the TMC substrates modify the binding energies of key intermediates on supported PdH. This work suggests the prospect of using TMCs as low‐cost and stable substrates to support and modify Pd for enhanced CO 2 RR activity.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0012704; FG02-13ER16381; SC0009476
OSTI ID:
1542779
Alternate ID(s):
OSTI ID: 1504298
Report Number(s):
BNL-211861-2019-JAAM
Journal Information:
Angewandte Chemie, Vol. 131, Issue 19; ISSN 0044-8249
Publisher:
German Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (3)

Coupling of Solar Energy and Thermal Energy for Carbon Dioxide Reduction: Status and Prospects journal February 2020
Intensified Electrocatalytic CO 2 Conversion in Pressure‐Tunable CO 2 ‐Expanded Electrolytes journal July 2019
Kopplung von Solarenergie und Wärmeenergie zur Kohlendioxidreduktion: Aktueller Stand und Perspektiven journal February 2020

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Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CO2 electroreduction
carbides
in-situ X-ray spectroscopy
computational chemistry
palladium hydride