DataVXAdvanced Functional MaterialsPaper
journal article·2023-08Open access

Nanoconfined Molecular Catalysts in Integrated Gas Diffusion Electrodes for High‐Current‐Density CO2 Electroreduction

Xiangzhou Lv, Qian Liu, Hao Yang, Jianghao Wang, Xiuju Wu, Xiaotong Li, Zhifu Qi, Jianhua Yan, Angjian Wu, Tao Cheng, Hao Bin Wu

Advanced Functional Materials· Volume 33· Issue 32
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Source abstract

Abstract

Abstract Molecular catalysts are promising catalysts to electrochemically convert CO2 into CO with high selectivity. However, achieving industrial‐level current density remains challenging due to the limitation of charge‐ and mass‐transport in gas diffusion electrode. Herein, a novel gas diffusion electrode architecture by confining highly dispersed cobalt(II) phthalocyanine (CoPc) molecules into ‐graphene oxide (GO) nanosheets (denoted as CoPc@GO) is designed. Benefiting from the accelerated CO2 diffusion and charge transport in the nanoconfined structure, the designed electrode achieves a high CO partial current density of 481.65 ± 12.50 mA cm−2 and a cathode energy efficiency over 64% for CO. The experimentally measured CO2 transport dynamics and molecular dynamics simulation confirm the accelerated CO2 diffusion, while theoretical calculations reveal the decreased energy barrier of the CO2 activation in the confined space. This study paves a new way for electrode architecture design that would accelerate the implementation of CO2 electrolysis technology.
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Research context

Energy storageNanomaterialsCatalysis & surfaces

OpenAlex topics: CO2 Reduction Techniques and Catalysts · Ionic liquids properties and applications · Advanced battery technologies research

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

Affiliations

Institute for Composites Science Innovation (InCSI) State Key Laboratory of Silicon Materials School of Materials Science and Engineering Zhejiang University Hangzhou 310027 China

Institute of Functional Nano & Soft Materials (FUNSOM) Jiangsu Key Laboratory for Carbon‐Based Functional Materials & Devices Joint International Research Laboratory of Carbon‐Based Functional Materials and Devices Soochow University Suzhou 215123 China

Institute of Zhejiang University – Quzhou 78 Jiuhua Boulevard North Quzhou 324000 China

Baima Lake Laboratory Hangzhou 310053 China

State Key Laboratory of Clean Energy Utilization Zhejiang University Hangzhou 310027 China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province · Fundamental Research Funds for the Central Universities · Higher Education Discipline Innovation Project · Natural Science Foundation of Jiangsu Province

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