A standalone bismuth vanadate-silicon artificial leaf achieving 8.4% efficiency for hydrogen production
Northwestern Polytechnical University · Jinan University · +2 more institutions
Abstract
Abstract The development of scalable photoelectrochemical water splitting with high solar-to-hydrogen efficiency and long-term stability is essential while challenging for practical application. Here, we design a BiVO 4 photoanode with gradient distributed oxygen vacancies, which induces strong dipole fields to promote charge separation. Growing sea-urchin-like FeOOH cocatalyst on the photoanode leads to a photocurrent density of 7.0 mA cm −2 at 1.23 V versus the reversible hydrogen electrode and is stable for over 520 h under AM 1.5 G illumination. By integrating with a silicon photovoltaic cell, the standalone artificial leaf achieves a solar-to-hydrogen efficiency of 8.4%. The scale-up of these artificial…
Citation impact
- FWCI
- 14.75
- Percentile
- 100%
- References
- 69
Authors
9Topics & keywords
- Bismuth vanadate
- Hydrogen production
- Water splitting
- Hydrogen
- Materials science
- Photocurrent
- Silicon
- Solar cell