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A photovoltaic-driven solid-state Zn–CO2 electrochemical cell system with sunlight-insusceptible chemical production

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Abstract

Artificial leaves conduct photo(electro)chemical reactions for chemical and fuel production directly driven by sunlight/photovoltaic cells. Therefore, only in the presence of real-time sunlight can artificial leaves generate chemicals and fuels, limiting the prolonged production and flexible application of artificial leaves. In this work, by simply coupling a photovoltaic cell with a solid-state Zn–CO2 electrochemical cell as a new conceptual artificial leaf, continuous chemical production not only with sunlight but also in the dark was realized. In this conceptual artificial leaf, photo-generated electricity from the photovoltaic cell was pre-stored in the electrochemical cell during charge and CO2 reduction occurred in discharge. With pure CO2 supply, the conceptual artificial leaf achieved a solar-to-CO efficiency up to 15.2%, which surpassed that of the record artificial leaves and was among the highest efficiencies for artificial photosynthesis devices. This work provides possibilities for developing more universal-applied artificial leaves producing chemicals and fuels with ever-changing sunlight.

Graphical abstract: A photovoltaic-driven solid-state Zn–CO2 electrochemical cell system with sunlight-insusceptible chemical production

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Article information


Submitted
06 Feb 2020
Accepted
22 Jun 2020
First published
23 Jun 2020

J. Mater. Chem. A, 2020, Advance Article
Article type
Paper

A photovoltaic-driven solid-state Zn–CO2 electrochemical cell system with sunlight-insusceptible chemical production

X. Wang, M. A. Ghausi, R. Yang, M. Wu, J. Xie and Y. Wang, J. Mater. Chem. A, 2020, Advance Article , DOI: 10.1039/D0TA01451F

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