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journal article·2024-09Open access

Activating Inert Perovskite Oxides for CO2 Electroreduction via Slight Cu2+ Doping in B‐Sites

Yuxi Li, Yu Zhang, Lei Shi, Xiangjian Liu, Zhenbao Zhang, Minghao Xie, Yuming Dong, Heqing Jiang, Yongfa Zhu, Jiawei Zhu

Small· Volume 20· Issue 37
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Source abstract

Abstract

Abstract Perovskite oxides are proven as a striking platform for developing high‐performance electrocatalysts. Nonetheless, a significant portion of them show CO2 electroreduction (CO2RR) inertness. Here a simple but effective strategy is reported to activate inert perovskite oxides (e.g., SrTiO3) for CO2RR through slight Cu2+ doping in B‐sites. For the proof‐of‐concept catalysts of SrTi1−xCuxO3 (x = 0.025, 0.05, and 0.1), Cu2+ doping (even in trace amount, e.g., x = 0.025) can not only create active, stable CuO6 octahedra, increase electrochemical active surface area, and accelerate charge transfer, but also significantly regulate the electronic structure (e.g., up‐shifted band center) to promote activation/adsorption of reaction intermediates. Benefiting from these merits, the stable SrTi1−xCuxO3 catalysts feature great improvements (at least an order of magnitude) in CO2RR activity and selectivity for high‐order products (i.e., CH4 and C2+), compared to the SrTiO3 parent. This work provides a new avenue for the conversion of inert perovskite oxides into high‐performance electrocatalysts toward CO2RR.
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Research context

Electronic materialsCatalysis & surfaces

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Advanced Condensed Matter Physics · Electronic and Structural Properties of Oxides

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Synthetic and Biological Colloids Ministry of Education School of Chemical and Material Engineering Jiangnan University Wuxi 214122 China

Qingdao New Energy Shandong Laboratory Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences Qingdao 266101 China

Joint International Research Laboratory of Biomass Energy and Materials College of Materials Science and Engineering Nanjing Forestry University Nanjing 210037 China

School of Chemistry and Chemical Engineering Linyi University Linyi 276005 China

Materials Science and Engineering Program and Walker Department of Mechanical Engineering The University of Texas at Austin Austin TX 78712 USA

Department of Chemistry Tsinghua University Beijing 100084 China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Shandong Province · Natural Science Foundation of Jiangsu Province

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