Bipolar Membrane-Assisted Solar Water Splitting in Optimal pH
Jingshan Luo (École Polytechnique Fédérale de Lausanne)
DA Vermaas (TU Delft - ChemE/Materials for Energy Conversion and Storage)
Dongqin Bi (École Polytechnique Fédérale de Lausanne)
Anders Hagfeldt (École Polytechnique Fédérale de Lausanne)
W.A. Smith (TU Delft - ChemE/Materials for Energy Conversion and Storage)
Michael Grätzel (École Polytechnique Fédérale de Lausanne)
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Abstract
An efficient and intrinsically safe bias-free solar-driven water-splitting device composed of perovskite light harvesters, Earth-abundant catalysts, and a bipolar membrane is demonstrated. Overall, 10 mA cm−2 current density with 1.63 V bias voltage for electrochemical water splitting and 12.7% solar to hydrogen conversion efficiency for solar-driven water splitting are achieved.
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