Hydrogen is a promising future sustainable fuel candidate with boundless opportunities. Research into photoelectrochemical (PEC) water splitting based on a lead halide perovskite (LHP) has progressed significantly with the aim of more efficient solar hydrogen production. Herein, we unite a well-known photo-absorbing LHP with cost-effective water-splitting catalysts, and we introduce two types of monolithic LHP-based PEC devices that act as a photocathode and a photoanode for the hydrogen evolution reaction and oxygen evolution reaction, leading to efficient unbiased overall water splitting. Through the integration of these two monolithic LHP-based photoelectrodes, an unbiased solar-to-hydrogen conversion efficiency of 10.64% and a photocurrent density of 8.65 mA cm−2 are achieved.
Bibliographical noteFunding Information:
Ryan Rhee and Tae Gyun Kim contributed equally. Jong H. Park acknowledges the support of the National Research Foundation of Korea funded by the Ministry of Science and ICT (2019R1A2C3010479, 2019M1A2A2065612, 2021M3H4A1A03049662) and Yonsei‐KIST Convergence Research Program.
© 2022 The Authors. Carbon Energy published by Wenzhou University and John Wiley & Sons Australia, Ltd.
All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment
- Energy (miscellaneous)
- Materials Chemistry
- Materials Science (miscellaneous)