دورية أكاديمية
أعرض في EDS

Low-bias photoelectrochemical water splitting via mediating trap states and small polaron hopping.

التفاصيل البيبلوغرافية
العنوان: Low-bias photoelectrochemical water splitting via mediating trap states and small polaron hopping.
المؤلفون: Wu H; Low-Carbon and Climate Impact Research Centre, School of Energy and Environment, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR, China.; City University of Hong Kong Shenzhen Research Institute, Shenzhen Hi-Tech Industrial Park, Nanshan District, Shenzhen, China., Zhang L; School of Chemistry and Physics and Centre for Materials Science, Faculty of Science, Queensland University of Technology, Gardens Point Campus, Brisbane, QLD, 4001, Australia., Du A; School of Chemistry and Physics and Centre for Materials Science, Faculty of Science, Queensland University of Technology, Gardens Point Campus, Brisbane, QLD, 4001, Australia., Irani R; Institute for Solar Fuels, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, Berlin, 14109, Germany., van de Krol R; Institute for Solar Fuels, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, Berlin, 14109, Germany., Abdi FF; Institute for Solar Fuels, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Hahn-Meitner-Platz 1, Berlin, 14109, Germany., Ng YH; Low-Carbon and Climate Impact Research Centre, School of Energy and Environment, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong SAR, China. yunhau.ng@cityu.edu.hk.; City University of Hong Kong Shenzhen Research Institute, Shenzhen Hi-Tech Industrial Park, Nanshan District, Shenzhen, China. yunhau.ng@cityu.edu.hk.
المصدر: Nature communications [Nat Commun] 2022 Oct 20; Vol. 13 (1), pp. 6231. Date of Electronic Publication: 2022 Oct 20.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Nature Pub. Group Country of Publication: England NLM ID: 101528555 Publication Model: Electronic Cited Medium: Internet ISSN: 2041-1723 (Electronic) Linking ISSN: 20411723 NLM ISO Abbreviation: Nat Commun Subsets: PubMed not MEDLINE; MEDLINE
أسماء مطبوعة: Original Publication: [London] : Nature Pub. Group
مستخلص: Metal oxides are promising for photoelectrochemical (PEC) water splitting due to their robustness and low cost. However, poor charge carrier transport impedes their activity, particularly at low-bias voltage. Here we demonstrate the unusual effectiveness of phosphorus doping into bismuth vanadate (BiVO 4 ) photoanode for efficient low-bias PEC water splitting. The resulting BiVO 4 photoanode shows a separation efficiency of 80% and 99% at potentials as low as 0.6 and 1.0 V RHE , respectively. Theoretical simulation and experimental analysis collectively verify that the record performance originates from the unique phosphorus-doped BiVO 4 configuration with concurrently mediated carrier density, trap states, and small polaron hopping. With NiFeO x cocatalyst, the BiVO 4 photoanode achieves an applied bias photon-to-current efficiency of 2.21% at 0.6 V RHE . The mechanistic understanding of the enhancement of BiVO 4 properties provides key insights in trap state passivation and polaron hopping for most photoactive metal oxides.
(© 2022. The Author(s).)
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معلومات مُعتمدة: JCYJ20190808181805621 Shenzhen Science and Technology Innovation Commission
تواريخ الأحداث: Date Created: 20221020 Latest Revision: 20221024
رمز التحديث: 20221213
مُعرف محوري في PubMed: PMC9585101
DOI: 10.1038/s41467-022-33905-6
PMID: 36266344
قاعدة البيانات: MEDLINE
الوصف
تدمد:2041-1723
DOI:10.1038/s41467-022-33905-6