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Electrochemical training of nanoporous Cu-In catalysts for efficient CO2-to-CO conversion and high durability.

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Title: Electrochemical training of nanoporous Cu-In catalysts for efficient CO2-to-CO conversion and high durability.
Authors: Barasa, Godfrey Okumu1, Yu, Tianshui1, Lu, Xianglong1, Zhou, Xiangji1, Wang, Hailing1, Qian, Lihua1 lhqian@hust.edu.cn, Yu, Yao2, Liu, Lin2, Lei, Pengxiang3
Source: Electrochimica Acta. Feb2019, Vol. 295, p584-590. 7p.
Subjects: Bimetallic catalysts, Nanoporous materials, Durability, Catalysts
Abstract: Abstract Electrochemical carbon dioxide (CO 2) reduction into valuable chemicals is usually implemented at high overpotential, and most bimetallic catalysts suffer from the dramatic evolution of surface composition especially in case of long-term operation. In this work, as a proof-of-concept experiment, one effective protocol is first identified to drive the positive evolution of surface contents on nanoporous Cu-In by electrochemical training in KHCO 3 electrolyte. Interestingly, superior performances including high selectivity for CO production and robust reliability are realized. Thus, Faradaic efficiency can approach the maximum of 91% at −0.95 V (vs. RHE), and an excellent durability can be simultaneously testified by no detectable performance decay for 7 h in operation. More importantly, current investigation paves a new road for designing bimetallic electrocatalysts with high selectivity and long-term durability. [ABSTRACT FROM AUTHOR]
Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 133705796
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PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Electrochemical training of nanoporous Cu-In catalysts for efficient CO2-to-CO conversion and high durability.
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  Data: <searchLink fieldCode="AR" term="%22Barasa%2C+Godfrey+Okumu%22">Barasa, Godfrey Okumu</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yu%2C+Tianshui%22">Yu, Tianshui</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Lu%2C+Xianglong%22">Lu, Xianglong</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Zhou%2C+Xiangji%22">Zhou, Xiangji</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Wang%2C+Hailing%22">Wang, Hailing</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Qian%2C+Lihua%22">Qian, Lihua</searchLink><relatesTo>1</relatesTo><i> lhqian@hust.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Yu%2C+Yao%22">Yu, Yao</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Liu%2C+Lin%22">Liu, Lin</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Lei%2C+Pengxiang%22">Lei, Pengxiang</searchLink><relatesTo>3</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Electrochimica+Acta%22">Electrochimica Acta</searchLink>. Feb2019, Vol. 295, p584-590. 7p.
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  Data: <searchLink fieldCode="DE" term="%22Bimetallic+catalysts%22">Bimetallic catalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Nanoporous+materials%22">Nanoporous materials</searchLink><br /><searchLink fieldCode="DE" term="%22Durability%22">Durability</searchLink><br /><searchLink fieldCode="DE" term="%22Catalysts%22">Catalysts</searchLink>
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  Label: Abstract
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  Data: Abstract Electrochemical carbon dioxide (CO 2) reduction into valuable chemicals is usually implemented at high overpotential, and most bimetallic catalysts suffer from the dramatic evolution of surface composition especially in case of long-term operation. In this work, as a proof-of-concept experiment, one effective protocol is first identified to drive the positive evolution of surface contents on nanoporous Cu-In by electrochemical training in KHCO 3 electrolyte. Interestingly, superior performances including high selectivity for CO production and robust reliability are realized. Thus, Faradaic efficiency can approach the maximum of 91% at −0.95 V (vs. RHE), and an excellent durability can be simultaneously testified by no detectable performance decay for 7 h in operation. More importantly, current investigation paves a new road for designing bimetallic electrocatalysts with high selectivity and long-term durability. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Electrochimica Acta is the property of Pergamon Press - An Imprint of Elsevier Science and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.electacta.2018.10.175
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        Text: English
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        PageCount: 7
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        Type: general
      – SubjectFull: Nanoporous materials
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      – SubjectFull: Durability
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              Text: Feb2019
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              Y: 2019
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