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NREL sets new world efficiency record for solar hydrogen production: 16.2%

Green Car Congress

Scientists at the US Department of Energy’s (DOE) National Renewable Energy Laboratory (NREL) recaptured the record for highest efficiency in solar hydrogen production via a photoelectrochemical (PEC) water-splitting process. Structure of an IMM photocathode configured for water splitting with TEM cross-section of the active layers.

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What ‘real world’ hydrogen pickup looks like and why it should end the conversation

Baua Electric

This hydrogen-powered GM commercial truck offers 300 miles of range and “generates enough electricity to power 250 typical American homes” (for a few minutes?). To achieve a 300 mile range, we had to investigate new packaging initiatives for the tanks to hold 40kg of hydrogen,” is another quote attributed to the GM/HYDROTEC team.

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New photochemical diode artificial photosynthesis system doubles efficiency of solar water splitting

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As reported in an open-access paper in Nature Communications, the wafer-level photochemical diode arrays exhibited solar-to-hydrogen efficiency of ~3.3% Previous direct solar water splitters have achieved a little more than 1 percent stable solar-to-hydrogen efficiency in fresh or saltwater. in neutral (pH?~?7.0)

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NREL researchers capture excess photon energy to produce solar fuels; higher efficiency water-splitting for H2

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Using quantum dots (QD) and a process called Multiple Exciton Generation (MEG), the NREL researchers were able to push the peak external quantum efficiency for hydrogen generation to 114%. Photogenerated holes oxidize sulfide in one compartment while electrons reduce hydrogen in the other compartment at the dark Pt cathode.

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NREL shows graded catalytic-protective layer boosts longevity of high-efficiency photocathodes for renewable hydrogen

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Their works demonstrates the potential of utilizing a hybridized, heterogeneous surface layer as a cost-effective catalytic and protective interface for solar hydrogen production. Using a photoelectrochemical (PEC) device is a promising way to produce hydrogen. Nature Energy 2, Article number: 16192 doi: 10.1038/nenergy.2016.192.

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Wind-to-Hydrogen Tech Goes to Sea

Cars That Think

Wind and solar parks produce a large portion of their energy. They are highly automated production islands that directly convert wind energy to hydrogen, with a few of them processing the gas into fuels and other goods. US $5 PER KILOGRAM Cost of green hydrogen today. Conventional, or gray, hydrogen: $1.50

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Nitrogen-doped graphene nanoplatelets offer high catalytic performance in fuel cells and solar cells; possible replacement for Pt

Green Car Congress

Researchers in South Korea have developed a simple, low-cost and eco-friendly method of creating nitrogen-doped graphene nanoplatelets (NGnPs) with excellent catalytic performance in both dye-sensitized solar cells and fuel cells to replace conventional platinum (Pt)-based catalysts for energy conversion. —Jeon et al. 1116897109.

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