scholarly journals Solvent-controlled O2 diffusion enables air-tolerant solar hydrogen generation

2021 ◽  
Author(s):  
Michael G Allan ◽  
Morgan J McKee ◽  
Frank Marken ◽  
Moritz F Kuehnel
Keyword(s):  
Water Splitting ◽  
Hydrogen Generation ◽  
Renewable Fuels ◽  
Solar Hydrogen ◽  
Solar Water ◽  
Solar Water Splitting ◽  
O2 Diffusion

Solar water splitting into H2 and O2 is a promising approach to provide renewable fuels. However, the presence of O2 hampers H2 generation and most photocatalysts show a major drop...

scholarly journals Hydrogen generation by solar water splitting using p-InGaN photoelectrochemical cells

2010 ◽  
Vol 96 (5) ◽  
pp. 052110 ◽  
Author(s):  
K. Aryal ◽  
B. N. Pantha ◽  
J. Li ◽  
J. Y. Lin ◽  
H. X. Jiang
Keyword(s):  
Water Splitting ◽  
Hydrogen Generation ◽  
Photoelectrochemical Cells ◽  
Solar Water ◽  
Solar Water Splitting

Electrochemical tuning of heterojunctions in TiO2 nanotubes for efficient solar water splitting

2019 ◽  
Vol 9 (19) ◽  
pp. 5425-5432 ◽  
Author(s):  
L. K. Preethi ◽  
Tom Mathews
Keyword(s):  
Water Splitting ◽  
Tio2 Nanotubes ◽  
Hydrogen Generation ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Photocatalytic Hydrogen Generation ◽  
Electrochemical Tuning

The electrochemical assisted biphase ↔ triphase switching in TiO2 nanotubes and their comprehensive photocatalytic hydrogen generation efficiencies are presented.

Decoupling Hydrogen Production and Water Oxidation in a Hybrid Solar-Driven Vanadium Redox Cell Supported By a Bipolar Membrane with Earth-Abundant Catalysts

2018 ◽  
Vol MA2018-01 (31) ◽  
pp. 1864-1864
Author(s):  
Chengxiang("CX") Xiang
Keyword(s):  
Water Splitting ◽  
Water Oxidation ◽  
Cathode Surface ◽  
Hydrogen Generation ◽  
Anode Surface ◽  
Faradaic Efficiency ◽  
Solar Water ◽  
Solar Water Splitting ◽  
Hydrogen Molecules ◽  
Vanadium Redox

Renewable hydrogen produced by solar water-splitting has the potential to balance the intermittent nature of the sunlight and support grid-scale energy storage. In a solar-driven water-splitting device, the cathode surface and the anode surface involve hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), which are tightly coupled with each other, that is, whenever one oxygen molecule was produced at the cathode surface, two hydrogen molecules were produced at the anode surface at the same time. In this talk, I will show some recent results on an alternative approach to solar water-splitting, where the electron and proton generated at OER was used to charge an aqueous vanadium solution in a 2.0 M sulfuric acid (pH = -0.16) electrolyte with near unity Faradaic efficiency, rather than being used directly to produce hydrogen at the cathode. The produced V2+ species in the cathode chamber was then passed through a MoCx based catalyst to produce hydrogen and to re-generate V3+ for the subsequent reduction, with an average hydrogen generation efficiency of 85% at different depths of charging. Coupled to a solar tracker, the solar-driven vanadium redox cell was charged outdoors under real-world illumination during the day and discharged at night to produce hydrogen with a daily average solar to hydrogen (STH) conversion efficiency of 5.8%.

Calculations of theoretical efficiencies for electrochemically-mediated tandem solar water splitting as a function of bandgap energies and redox shuttle potential

2019 ◽  
Vol 12 (1) ◽  
pp. 261-272 ◽  
Author(s):  
Sam Keene ◽  
Rohini Bala Chandran ◽  
Shane Ardo
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Cost Effective ◽  
Solar Hydrogen ◽  
Solar Water ◽  
Promising Technology ◽  
Solar Water Splitting ◽  
Redox Shuttle ◽  
Solar Hydrogen Production ◽  
Light Absorbers

Tandem Z-scheme solar water splitting devices composed of two light-absorbers that are connected electrochemically by a soluble redox shuttle constitute a promising technology for cost-effective solar hydrogen production.

Band engineered Al-rich InAlN thin films as a promising photoanode for hydrogen generation from solar water splitting

2018 ◽  
Vol 185 ◽  
pp. 445-455 ◽  
Author(s):  
Mahdi Alizadeh ◽  
Goh Boon Tong ◽  
Muhammad Shahid Mehmood ◽  
Karwan Wasman Qader ◽  
Saadah Abdul Rahman ◽  
...  
Keyword(s):  
Thin Films ◽  
Water Splitting ◽  
Hydrogen Generation ◽  
Solar Water ◽  
Solar Water Splitting

Hydrogen Generation by Solar Water Splitting Using 2D Nanomaterials

Solar RRL ◽  
2020 ◽  
Vol 4 (8) ◽  
pp. 2000050 ◽  
Author(s):  
Mohd Monis Ayyub ◽  
Reetendra Singh ◽  
Chintamani Nagesa Ramachandra Rao
Keyword(s):  
Water Splitting ◽  
Hydrogen Generation ◽  
Solar Water ◽  
Solar Water Splitting ◽  
2D Nanomaterials

Combinatorial Fabrication and High-Throughput Characterization of Thin Film Metal Oxide Libraries for Solar water Splitting

2018 ◽  
Author(s):  
Alfred Ludwig ◽  
Mona Nowak ◽  
Swati Kumari ◽  
Helge S. Stein ◽  
Ramona Gutkowski ◽  
...  
Keyword(s):  
Thin Film ◽  
Metal Oxide ◽  
Water Splitting ◽  
High Throughput ◽  
Solar Water ◽  
Solar Water Splitting
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