Site-Selective Growth of fcc-2H-fcc Copper on Unconventional Phase Metal Nanomaterials for Highly Efficient Tandem CO2 Electroreduction

Yangbo Ma, Mingzi Sun, Hongming Xu, Qinghua Zhang, Jia Lv, Weihua Guo, Fengkun Hao, Wenting Cui, Yunhao Wang, Jinwen Yin, Haiyu Wen, Pengyi Lu, Guozhi Wang, Jingwen Zhou, Jinli Yu, Chenliang Ye, Lin Gan, Daliang Zhang, Shengqi Chu, Lin GuMinhua Shao, Bolong Huang, Zhanxi Fan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

Copper (Cu) nanomaterials are a unique kind of electrocatalysts for high-value multi-carbon production in carbon dioxide reduction reaction (CO2RR), which holds enormous potential in attaining carbon neutrality. However, phase engineering of Cu nanomaterials remains challenging, especially for the construction of unconventional phase Cu-based asymmetric heteronanostructures. Here the site-selective growth of Cu on unusual phase gold (Au) nanorods, obtaining three kinds of heterophase fcc-2H-fcc Au–Cu heteronanostructures is reported. Significantly, the resultant fcc-2H-fcc Au–Cu Janus nanostructures (JNSs) break the symmetric growth mode of Cu on Au. In electrocatalytic CO2RR, the fcc-2H-fcc Au–Cu JNSs exhibit excellent performance in both H-type and flow cells, with Faradaic efficiencies of 55.5% and 84.3% for ethylene and multi-carbon products, respectively. In situ characterizations and theoretical calculations reveal the co-exposure of 2H-Au and 2H-Cu domains in Au–Cu JNSs diversifies the CO* adsorption configurations and promotes the CO* spillover and subsequent C–C coupling toward ethylene generation with reduced energy barriers.

Original languageEnglish
Article number2402979
JournalAdvanced Materials
DOIs
Publication statusE-pub ahead of print - 29 May 2024

Keywords

  • carbon dioxide electroreduction
  • crystal phase control
  • low-dimensional metal nanomaterials
  • site-selective growth
  • tandem catalysis

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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