DataVXACS Applied Materials & InterfacesPaper
journal article·2020-12-16

High Solar-to-Hydrogen Conversion Efficiency at pH 7 Based on a PV-EC Cell with an Oligomeric Molecular Anode

Yuanyuan Shi, Tsung-Yu Hsieh, Md Asmaul Hoque, Werther Cambarau, Stéphanie Narbey, Carolina Gimbert-Suriñach, Emilio Palomares, Mario Lanza, Antoni Llobet

ACS Applied Materials & Interfaces· Volume 12· Issue 50
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Source abstract

Abstract

In the urgent quest for green energy vectors, the generation of hydrogen by water splitting with sunlight occupies a preeminent standpoint. The highest solar-to-hydrogen (STH) efficiencies have been achieved with photovoltaic-electrochemical (PV-EC) systems. However, most PV-EC water-splitting devices are required to work at extreme conditions, such as in concentrated solutions of HClO4 or KOH or under highly concentrated solar illumination. In this work, a molecular catalyst-based anode is incorporated for the first time in a PV-EC configuration, achieving an impressive 21.2% STH efficiency at neutral pH. Moreover, as opposed to metal oxide-based anodes, the molecular catalyst-based anode allows us to work with extremely small catalyst loadings (<16 nmol/cm2) due to a well-defined metallic center, which is responsible for the fast catalysis of the reaction in the anodic compartment. This work paves the way for integrating molecular materials in efficient PV-EC water-splitting systems.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageElectronic materialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Advanced Photocatalysis Techniques

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

Affiliations

Institute of Chemical Research of Catalonia (ICIQ), Barcelona Institute of Science and Technology (BIST), Avinguda Països Catalans, 16, 43007 Tarragona, Spain

Solaronix S.A., Rue de l′Ouriette 129, CH-1170 Aubonne, Switzerland

ICREA, Passeig Lluís Companys 23, 08010 Barcelona, Spain

Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), 23955-6900 Thuwal, Saudi Arabia

Departament de Química, Universitat Autònoma de Barcelona (UAB), 08193 Cerdanyola del Vallès, Barcelona, Spain

Funding

Collaborative Innovation Center of Suzhou Nano Science and Technology · Ministry of Education of the People's Republic of China · European Regional Development Fund · Ministerio de Econom?a y Competitividad · Ag?ncia de Gesti? d?Ajuts Universitaris i de Recerca · Government of Jiangsu Province · National Natural Science Foundation of China · Priority Academic Program Development of Jiangsu Higher Education Institutions · Ministry of Finance of the People's Republic of China · Jiangsu Provincial Key Laboratory for Carbon-Based Functional Materials and Devices, Soochow University

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