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A New Energy-Efficient Hydrogel Pulls Water From Air

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Using a new kind of hydrogel material, researchers at the University of Texas at Austin have pulled water out of thin air at temperatures low enough to be achieved with sunlight. Atmospheric water harvesting draws water from humidity in the air. The UT Austin technique is aimed at the latter.

Water 131
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ARPA-E awarding $39M to 16 projects to grow the domestic critical minerals supply chain

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The selected projects, led by universities, national laboratories, and the private sector aim to develop commercially scalable technologies that will enable greater domestic supplies of copper, nickel, lithium, cobalt, rare earth elements, and other critical elements. Columbia University. Harvard University.

Supplies 345
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Univ. of Texas researchers propose lithium- or sodium-water batteries as next generation of high-capacity battery technology; applicable for EVs and grid storage

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Example of a lithium-water rechargeable battery. Researchers at the University of Texas, including Dr. John Goodenough, are proposing a strategy for high-capacity next-generation alkali (lithium or sodium)-ion batteries using water-soluble redox couples as the cathode. In theory, the decomposition potential of water is 4.27

Sodium 218
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Gravity Batteries, Green Hydrogen, and a Thorium Reactor for China

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No battery is perfect, however, so engineers keep pushing for new and improved ways to store those electrons. The gravity batteries described in this story lift giant weights in the air or up mine shafts to store excess electricity, releasing the weights later on to recover the stored energy.

Hydrogen 105
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Researchers combining CO2 storage and geothermal energy production

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Between five and ten percent of the water injected in these systems is lost as it travels through the pore spaces. As this happens, more water must be added, perhaps from municipal sources that have little to spare. Their work has shown that supercritical CO 2 is better than water at mining heat from the subsurface.

Energy 244
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Duke study: serpentinized rock in oceans may be large, overlooked source of free hydrogen gas

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Rocks formed beneath the ocean floor by fast-spreading tectonic plates may be a large and previously overlooked source of free hydrogen gas, a new Duke University study suggests. You start with water, add energy to split the oxygen and hydrogen molecules apart, and get H 2. —co-author Lincoln F. —Stacey L.

Hydrogen 150
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Video Friday: Tensegrity Wheels

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IROS 2023 : 1–5 October 2023, DETROIT CLAWAR 2023 : 2–4 October 2023, FLORIANOPOLIS, BRAZIL ROSCon 2023 : 18–20 October 2023, NEW ORLEANS Humanoids 2023 : 12–14 December 2023, AUSTIN, TEX. The robot can also jump onto obstacles up to 300 millimeters high with a bistable mechanism that can gradually store but quickly release energy.

Boston 108