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EPFL team develops low-cost catalyst for splitting CO2

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EPFL scientists have developed an Earth-abundant and low-cost catalytic system for splitting CO 2 into CO and oxygen—an important step towards achieving the conversion of renewable energy into hydrocarbon fuels. A solar-driven system set up using this catalyst was able to split CO 2 with an efficiency of 13.4%.

Low Cost 150
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Swiss team develops effective and low-cost solar water-splitting device; 14.2% solar-to-hydrogen efficiency

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The prototype system is made up of three interconnected, new-generation, crystalline silicon solar cells attached to an electrolysis system that does not rely on rare metals. crystalline Silicon (c-Si) solar cells show high solar-to-electricity efficiencies, and have demonstrated stabilities in excess of 25 years.

Solar 150
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GWU team demonstrates highly scalable, low-cost process for making carbon nanotube wools directly from CO2

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The process is constrained by the (low) cost of electricity. Larger scale C2CNT can be achieved through direct elimination of atmospheric CO 2 using solar heat and solar to electric PVs. Monel cathode substrates, electrolyte equilibration, and a mixed metal (NiChrome) nucleation facilitate the synthesis of this CNT wool.

Low Cost 300
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New long-duration, extended capacity Na-Al battery design for grid storage

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V for neutral NaAlCl 4 ) contributed by the acidic chloroaluminate cathode reaction, unlocking an additional specific energy of ∼119 Wh kg −1 by utilizing the conversion of NaAlCl 4 to NaAl 2 Cl 7 , which adds to the neutral melt reaction between NaAlCl 4 /Al and Na (∼493 Wh kg −1 theoretical). Resources J. —Weller et al.

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Convert Oil Wells to Solve the Solar Storage Problem

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One of the main impediments to harnessing solar energy is storage. Solar batteries work as a short-term solution, but not when it comes to long-term storage or to power, say, an entire city. Solar energy and oil wells might sound like an odd combination, but the principle is similar to how geothermal energy would be harnessed.

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Harvard team demonstrates new metal-free organic–inorganic aqueous flow battery; potential breakthrough for low-cost grid-scale storage

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As the fraction of electricity generation from intermittent renewable sources—such as solar or wind—grows, the ability to store large amounts of electrical energy is of increasing importance. Solid-electrode batteries maintain discharge at peak power for far too short a time to fully regulate wind or solar power output.

Low Cost 374
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GWU team develops low-cost, high-yield one-pot synthesis of carbon nanofibers from atmospheric CO2

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Stuart Licht at The George Washington University in Washington, DC has developed a low-cost, high-yield and scalable process for the electrolytic conversion of atmospheric CO 2 dissolved in molten carbonates into carbon nanofibers (CNFs.) —Ren et al. —Stuart Licht. 5b02427.

Low Cost 150