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Stable CO2 electroreduction to CH4 at an engineering‐relevant scale enabled by confined Cu nanoclusters.

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Title: Stable CO2 electroreduction to CH4 at an engineering‐relevant scale enabled by confined Cu nanoclusters.
Authors: Wang, Zhaolong1,2 (AUTHOR), Wang, Tao1 (AUTHOR), Yi, Siyu1 (AUTHOR), Yi, Jianjian3 (AUTHOR), Mo, Zhao1 (AUTHOR), Zhu, Xingwang3 (AUTHOR), Ji, Mengxia1 (AUTHOR), Yang, Jinman1 (AUTHOR) jmyang@ujs.edu.cn, Xu, Hui1,4 (AUTHOR) xh@ujs.edu.cn, She, Xiaojie1,2,4 (AUTHOR) xiaojieshe@ujs.edu.cn
Source: AIChE Journal. Jun2026, Vol. 72 Issue 6, p1-11. 11p.
Subjects: Copper clusters, Electrocatalysis, Electrode efficiency, Continuous flow reactors, Energy storage, Methanation, Durability
Abstract: Electrocatalytic CO2 methanation is a promising strategy for renewable energy storage but remains limited by low selectivity and insufficient stability under industrially relevant conditions. Here, a confined Cu atom‐cluster catalyst anchored on a nitrogen‐rich carbon framework (Cu AC/NC) is reported, synthesized via a scalable supramolecular precursor strategy that precisely controls Cu aggregation at the atomic‐cluster scale. In a flow‐cell configuration, Cu AC/NC achieves a CH4 Faradaic efficiency of ~70% with a partial current density of 316.1 mA cm−2. In situ spectroscopic analyses reveal that cluster confinement tailors the local reaction microenvironment, facilitating *CO protonation and deep hydrogenation of CO2. Deactivation mechanisms in alkaline and acidic electrolytes, as well as under pulsed electrolysis, are systematically examined. By balancing activity and stability, a pure‐H2O‐fed system is identified, enabling stable, carbonate‐free operation in scalable membrane electrode assemblies while sustaining methane production at engineering‐relevant current density. [ABSTRACT FROM AUTHOR]
Copyright of AIChE Journal is the property of Wiley-Blackwell 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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  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 193398365
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
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  Data: Stable CO<subscript>2</subscript> electroreduction to CH<subscript>4</subscript> at an engineering‐relevant scale enabled by confined Cu nanoclusters.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Zhaolong%22">Wang, Zhaolong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Tao%22">Wang, Tao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yi%2C+Siyu%22">Yi, Siyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yi%2C+Jianjian%22">Yi, Jianjian</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Mo%2C+Zhao%22">Mo, Zhao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhu%2C+Xingwang%22">Zhu, Xingwang</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ji%2C+Mengxia%22">Ji, Mengxia</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Jinman%22">Yang, Jinman</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> jmyang@ujs.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Xu%2C+Hui%22">Xu, Hui</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> xh@ujs.edu.cn</i><br /><searchLink fieldCode="AR" term="%22She%2C+Xiaojie%22">She, Xiaojie</searchLink><relatesTo>1,2,4</relatesTo> (AUTHOR)<i> xiaojieshe@ujs.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22AIChE+Journal%22">AIChE Journal</searchLink>. Jun2026, Vol. 72 Issue 6, p1-11. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Copper+clusters%22">Copper clusters</searchLink><br /><searchLink fieldCode="DE" term="%22Electrocatalysis%22">Electrocatalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Electrode+efficiency%22">Electrode efficiency</searchLink><br /><searchLink fieldCode="DE" term="%22Continuous+flow+reactors%22">Continuous flow reactors</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+storage%22">Energy storage</searchLink><br /><searchLink fieldCode="DE" term="%22Methanation%22">Methanation</searchLink><br /><searchLink fieldCode="DE" term="%22Durability%22">Durability</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Electrocatalytic CO2 methanation is a promising strategy for renewable energy storage but remains limited by low selectivity and insufficient stability under industrially relevant conditions. Here, a confined Cu atom‐cluster catalyst anchored on a nitrogen‐rich carbon framework (Cu AC/NC) is reported, synthesized via a scalable supramolecular precursor strategy that precisely controls Cu aggregation at the atomic‐cluster scale. In a flow‐cell configuration, Cu AC/NC achieves a CH4 Faradaic efficiency of ~70% with a partial current density of 316.1 mA cm−2. In situ spectroscopic analyses reveal that cluster confinement tailors the local reaction microenvironment, facilitating *CO protonation and deep hydrogenation of CO2. Deactivation mechanisms in alkaline and acidic electrolytes, as well as under pulsed electrolysis, are systematically examined. By balancing activity and stability, a pure‐H2O‐fed system is identified, enabling stable, carbonate‐free operation in scalable membrane electrode assemblies while sustaining methane production at engineering‐relevant current density. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of AIChE Journal is the property of Wiley-Blackwell 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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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1002/aic.70330
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 1
    Subjects:
      – SubjectFull: Copper clusters
        Type: general
      – SubjectFull: Electrocatalysis
        Type: general
      – SubjectFull: Electrode efficiency
        Type: general
      – SubjectFull: Continuous flow reactors
        Type: general
      – SubjectFull: Energy storage
        Type: general
      – SubjectFull: Methanation
        Type: general
      – SubjectFull: Durability
        Type: general
    Titles:
      – TitleFull: Stable CO2 electroreduction to CH4 at an engineering‐relevant scale enabled by confined Cu nanoclusters.
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            NameFull: Wang, Zhaolong
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            NameFull: Wang, Tao
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            NameFull: Yi, Siyu
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            NameFull: Mo, Zhao
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            NameFull: Zhu, Xingwang
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          Dates:
            – D: 01
              M: 06
              Text: Jun2026
              Type: published
              Y: 2026
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