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Unique star decahedron Cu nanocatalyst with highly active hydrocarbon production

Choi, Chungseok and Cheng, Tao and Flores Espinosa, Michelle and Fei, Huilong and Duan, Xiangfeng and Goddard, William Andrew and Huang, Yu (2019) Unique star decahedron Cu nanocatalyst with highly active hydrocarbon production. In: 258th ACS National Meeting & Exposition, 25-29 August 2019, San Diego, CA.

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Electrochem. carbon dioxide redn. reaction (CO₂RR) to renewable fuels and feed stocks provides a viable approach to recycle CO₂ gas into energy sources, which requires development of highly active catalysts at low overpotential. Herein, we synthesize a high-yield star decahedron Cu nanoparticle (SD-Cu NPs) electrocatalysts. SD-Cu NPs display unique twin boundaries (TBs) and multiple stacking faults, leading to low overpotentials for methane (CH₄) and high efficiency for ethylene (C₂H₄) prodn. To be specific, SD-Cu NPs show 0.149 V lower an onset potential for CH4 prodn. than com. Cu NPs, and 52.43%±6.87 faradaic efficiency (FE) for C₂H₄ prodn. at -0.993±0.0129 V. In addn., a DFT based fundamental study of why the sites on the SD-Cu NPs lead to understanding about such dramatically improved performance.

Item Type:Conference or Workshop Item (Paper)
Related URLs:
URLURL TypeDescription Website
Choi, Chungseok0000-0001-9169-1393
Cheng, Tao0000-0003-4830-177X
Flores Espinosa, Michelle0000-0002-5697-1290
Fei, Huilong0000-0002-4216-5810
Duan, Xiangfeng0000-0002-4321-6288
Goddard, William Andrew0000-0003-0097-5716
Additional Information:© 2019 American Chemical Society.
Record Number:CaltechAUTHORS:20200430-100809890
Persistent URL:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:102924
Deposited By: Tony Diaz
Deposited On:30 Apr 2020 17:15
Last Modified:30 Apr 2020 17:15

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