An efficient tandem photoelectrochemical cell composed of FeOOH/TiO2/BiVO4 and Cu2O for self-driven solar water splitting |
| |
| Affiliation: | 1. School of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China;2. Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha, 410083, China;3. Department of Chemistry, University College London, 20 Gordon Street, London, WC1H 0AJ, UK;4. College of Resources and Environment, Hunan Agricultural University, Changsha, 410128, China;5. Division of Scientific Research Management, Chongqing University of Education, Chongqing, 400065, China;6. School of Materials Science and Energy Engineering, Foshan University, Guangdong, 528000, China;1. School of Chemical Engineering and SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746, Republic of Korea;2. Global GET-Future Lab and Department of Advanced Materials Chemistry, Korea University, 2511 Sejong-ro, Sejong 339-700, Republic of Korea;3. School of Integrative Engineering, Chung-Ang University, 221 Heukseok-dong, Dongjak-gu, Seoul 156-756, Republic of Korea;4. Department of Chemical and Biomolecular Engineering, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Republic of Korea;1. LEPABE - Faculdade de Engenharia, Universidade do Porto, rua Dr. Roberto Frias, 4200-465 Porto, Portugal;2. Institute of Solar Research, German Aerospace Center (DLR), Germany;1. Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices, Faculty of Physics and Electronic Science, Hubei University, Wuhan, Hubei 430062, PR China;2. Liaoning Key Materials Laboratory for Railway, School of Materials Science and Engineering, Dalian Jiaotong University, Dalian 116028, PR China;3. Department of Applied Physics, Aalto University, FI-00076 Aalto, Espoo, Finland;1. Henan Key Laboratory of Nanocomposites and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou, Henan, 450006, China;2. School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, Guangdong, 523808, China;3. Wuhan National Laboratory for Optoelectronics, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan, 430074, China |
| |
| Abstract: | An integrated solar water splitting tandem cell without external bias was designed using a FeOOH modified TiO2/BiVO4 photoanode as a photoanode and p-Cu2O as a photocathode in this study. An apparent photocurrent (0.37 mA/cm2 at operating voltage of +0.36 VRHE) for the tandem cell without applied bias was measured, which is corresponding to a photoconversion efficiency of 0.46%. Besides, the photocurrent of FeOOH modified TiO2/BiVO4–Cu2O is much higher than the operating point given by pure BiVO4 and Cu2O photocathode (∼0.07 mA/cm2 at +0.42 VRHE). Then we established a FeOOH modified TiO2/BiVO4–Cu2O two-electrode system and measured the current density-voltage curves under AM 1.5G illumination. The unassisted photocurrent density is 0.12 mA/cm−2 and the corresponding amounts of hydrogen and oxygen evolved by the tandem PEC cell without bias are 2.36 μmol/cm2 and 1.09 μmol/cm2 after testing for 2.5 h. The photoelectrochemical (PEC) properties of the FeOOH modified TiO2/BiVO4 photoanode were further studied to demonstrate the electrons transport process of solar water splitting. This aspect provides a fundamental challenge to establish an unbiased and stabilized photoelectrochemical (PEC) solar water splitting tandem cell with higher solar-to-hydrogen efficiency. |
| |
| Keywords: | PEC tandem cell Self-driven water splitting Solar hydrogen |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
