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

• DOI: 10.1021/acsami.0c16235
• Publication Date: 2020-12-01T11:50:03Z
• Authors: Yuanyuan Shi; Tsung-Yu Hsieh; Md Asmaul Hoque; Werther Cambarau; Stéphanie Narbey; Carolina Gimbert-...; Emilio Palomares; Mario Lanza; Antoni Llobet
• Keywords: 4. Education; 54; 01 natural sciences; 0104 chemical sciences

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