Bakgrunn
- B.Sc. i Materialer, Energy og Nanoteknologi fra Universitetet i Oslo
- M.Sc. i Materialer for energi og nanoteknologi fra Universitetet i Oslo.
Thesis title: Double Perovskite Cobaltites as Oxygen Evolution Reaction Catalysts in Electrochemical and Photoelectrochemical Water Splitting Cells
Emneord:
SMN,
Elektrokjemi
Publikasjonar
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Zhu, Junjie; Gudmundsdottir, Jonina Björg; Strandbakke, Ragnar; Both, Kevin Gregor; Aarholt, Thomas & Almeida Carvalho, Patricia
[Vis alle 12 forfattere av denne artikkelen]
(2021).
Double Perovskite Cobaltites Integrated in a Monolithic and Noble Metal-Free Photoelectrochemical Device for Efficient Water Splitting.
ACS Applied Materials & Interfaces.
ISSN 1944-8244.
13(17),
s. 20313–20325.
doi:
10.1021/acsami.1c01900.
Fulltekst i vitenarkiv
Vis sammendrag
Water photoelectrolysis has the potential to produce renewable hydrogen fuel, therefore addressing the intermittent nature of sunlight. Herein, a monolithic, photovoltaic (PV)-assisted water electrolysis device of minimal engineering and of low (in the μg range) noble-metal-free catalysts loading is presented for unassisted water splitting in alkaline media. An efficient double perovskite cobaltite catalyst, originally developed for high-temperature proton-conducting ceramic electrolyzers, possesses high activity for the oxygen evolution reaction in alkaline media at room temperatures too. Ba1–xGd1–yLax+yCo2O6−δ (BGLC) is combined with a NiMo cathode, and a solar-to-hydrogen efficiency of 6.6% in 1.0 M NaOH, under 1 sun simulated illumination for 71 h, is demonstrated. This work highlights how readily available earth-abundant materials and established PV methods can achieve high performance and stable and monolithic photoelectrolysis devices with potential for full-scale applications.
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Gudmundsdottir, Jonina Björg
(2023).
Oxygen on the IrO2 (110) Surface - A DFT Study.
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Gudmundsdottir, Jonina Björg; Vøllestad, Einar; Haugsrud, Reidar & Polfus, Jonathan
(2023).
Oxygen Exchange Kinetics of BaGd0.3La0.7Co2O6-d.
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Chatzitakis, Athanasios; Zhu, Junjie; Gudmundsdottir, Jonina Björg; Strandbakke, Ragnar; Both, Kevin Gregor & Aarholt, Thomas
[Vis alle 12 forfattere av denne artikkelen]
(2022).
A monolithic and noble metal-free photoelectrochemical device of minimal engineering for efficient, unassisted water splitting.
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Gudmundsdottir, Jonina Björg; Thoreton, Vincent; Vøllestad, Einar & Polfus, Jonathan
(2022).
Oxygen Exchange Kinetics of BaGd0.3La0.7Co2O6-d Steam Electrodes for Proton Ceramic Electrochemical Cells.
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Publisert
3. jan. 2023 09:33
- Sist endra
15. sep. 2023 13:36