Long-term solar water and CO2 splitting with photoelectrochemical BiOI–BiVO4 tandems

Andrei, Virgil; Jagt, Robert A.; Rahaman, Motiar; Lari, Leonardo; Lazarov, Vlado K.; MacManus‐Driscoll, Judith L.; Hoye, Robert L. Z.; Reisner, Erwin

doi:10.1038/s41563-022-01262-w

Cited by 70 publications

(57 citation statements)

References 35 publications

(3 reference statements)

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“…Recently, Andrei et al have also demonstrated a proof of principle for a fully semiconductor-oxide-based driven unassisted PEC CO 2 RR. [297] A tandem BiVO 4 |BiOI system was used to accomplish this feat. Despite the elevated challenge in constructing solid-state buried junction for oxide systems, a decent V OC was achieved through the integration of a hitherto underexplored BiOI light absorber in a PV-inspired architecture.…”

Section: Photoanode-photocathode Systemsmentioning

confidence: 99%

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Toward Excellence in Photocathode Engineering for Photoelectrochemical CO₂ Reduction: Design Rationales and Current Progress

Putri

Ong

et al. 2022

Advanced Energy Materials

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Photoelectrochemical CO2 reduction reaction (PEC CO2RR) is a promising technology which offers the possibility of a carbon‐neutral solar fuel production via artificial photosynthesis. The challenging proton‐coupled multielectron transfers with high energy barriers in CO2RR however pose as a huge hindrance to the technology, which demands strict specifications in the design of photocathode materials so as to improve PEC performances. This review underscores effective design strategies and current material progress for the judicious assembly of photocathode materials for CO2RR. The review begins with elucidating the fundamental principles of CO2 reduction process and photocathode electrochemistry. Based on these, the design criteria and trade‐offs in the design of PEC CO2RR photocathodes are highlighted. The various promotive strategies for photocathodes and their underlying rationales such as doping, defect engineering, nanostructuring, cocatalyst loading, passivation, heterojunction formation, and innovative multijunction configurations are further outlined and design propositions in the area are provided. Following that, various photocathode semiconductor materials categorized into photovoltaic (PV) grade (silicon, III–V semiconductors, chalcogenides) and non‐PV grade (metal oxides) materials are summarized and extensively discussed, along with their recent advances. Finally, perspectives on the design of photocathodes for CO2RR and new paradigms in the field are put forward.

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Section: Photoanode-photocathode Systemsmentioning

confidence: 99%

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Toward Excellence in Photocathode Engineering for Photoelectrochemical CO₂ Reduction: Design Rationales and Current Progress

Putri

Ong

et al. 2022

Advanced Energy Materials

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“…In 2022, Reisner and his group demonstrated a hybrid photocathode for CO 2 reduction by integrating BiOI as a photovoltaic cell with a co-catalyst via encapsulating the PV cell with state-of-the-art conducting graphite epoxy (GE) paste. 150 A BiOI PV platelet on ITO is covered by a polycrystalline hole-transport layer of NiO x from below and electron-transport layer of ZnO on the outer side. They made 8 individual pixels each of size 0.045 cm 2 on a 1.2 cm × 1.2 cm substrate.…”

Section: Benchmarking Of the Materials And Processes For The Co2rrmentioning

confidence: 99%

Recent advancement in heterogeneous CO₂ reduction processes in aqueous electrolyte

2022

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“…27 In addition, GaAs microisland anodes and microsized multiplepixel BiOI photocathodes were reported showing increased stability compared to single-pixel devices. 31,32 However, a pixelation strategy has not yet been introduced for Cu 2 O photoelectrodes, and a general approach to this strategy needs to be clarified.…”

mentioning

confidence: 99%

“…In the case of a GaAs electrode, TiO 2 -protected and discretized GaAs nanowire photoanodes fabricated by metal–organic chemical vapor deposition (MOCVD) showed improved stability over 600 h under continuous operation via discretized absorbers . In addition, GaAs microisland anodes and microsized multiple-pixel BiOI photocathodes were reported showing increased stability compared to single-pixel devices. , However, a pixelation strategy has not yet been introduced for Cu 2 O photoelectrodes, and a general approach to this strategy needs to be clarified.…”

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confidence: 99%

Nanopixelated Cuprous Oxide Photocathodes for Durable Photoelectrochemical Water Splitting

Lee

2022

ACS Energy Lett.

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Cuprous oxide (Cu2O) has attracted extensive attention for use in the production of hydrogen through photoelectrochemical water-splitting reactions. However, because the Cu2O photocathode undergoes serious photocorrosion in aqueous environments, it needs a TiO2 protection layer to prevent direct contact with the electrolyte. Although TiO2 is deposited by atomic layer deposition, it is difficult to form a flawless film because of the presence of microscopic particles or ligands of precursors. Herein, we introduce defect-tolerant nanopixelated Cu2O thin film photocathodes to ensure the stability of the photocathodes. Structures comprising discrete pixels restrict defect propagation by corrosion. The pixel size of the pixelated photoelectrodes is theoretically investigated to mitigate the defect density of a protective layer. Nanopixelated Cu2O photocathodes with a pixel diameter of about 400 nm were electrodeposited on a patterned substrate using nanosphere lithography and show 70% stability for approximately 5 h, which is 10 times longer than that shown by a planar cell.

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Long-term solar water and CO2 splitting with photoelectrochemical BiOI–BiVO4 tandems

Cited by 70 publications

References 35 publications

Toward Excellence in Photocathode Engineering for Photoelectrochemical CO₂ Reduction: Design Rationales and Current Progress

Toward Excellence in Photocathode Engineering for Photoelectrochemical CO₂ Reduction: Design Rationales and Current Progress

Recent advancement in heterogeneous CO₂ reduction processes in aqueous electrolyte

Nanopixelated Cuprous Oxide Photocathodes for Durable Photoelectrochemical Water Splitting

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Long-term solar water and CO2 splitting with photoelectrochemical BiOI–BiVO4 tandems

Cited by 70 publications

References 35 publications

Toward Excellence in Photocathode Engineering for Photoelectrochemical CO2 Reduction: Design Rationales and Current Progress

Toward Excellence in Photocathode Engineering for Photoelectrochemical CO2 Reduction: Design Rationales and Current Progress

Recent advancement in heterogeneous CO2 reduction processes in aqueous electrolyte

Nanopixelated Cuprous Oxide Photocathodes for Durable Photoelectrochemical Water Splitting

Contact Info

Product

Resources

About

Toward Excellence in Photocathode Engineering for Photoelectrochemical CO₂ Reduction: Design Rationales and Current Progress

Toward Excellence in Photocathode Engineering for Photoelectrochemical CO₂ Reduction: Design Rationales and Current Progress

Recent advancement in heterogeneous CO₂ reduction processes in aqueous electrolyte