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Tokyo is testing hydrogen-powered autonomous vehicles at Takanawa Gateway City, Japan The low-speed self-driving vehicles carry passengers short distances and are powered by hydrogen fuel cells, producing only water as emissions

208,287 次观看 • 7 个月前 •via X (Twitter)

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🚨 BMW HAS SOLVED ONE OF HYDROGEN’S BIGGEST PACKAGING PROBLEMS. The company has developed a new “Hydrogen Flat Storage” system for the iX5 that uses seven slim hydrogen tanks instead of two large ones. This flat design fits into the same space as the high-voltage battery pack used in the electric iX5. This is significant because it allows BMW to build the hydrogen-powered iX5 on the same production line as petrol, diesel, plug-in hybrid, and fully electric versions without major changes to the factory or vehicle architecture. The system stores 7kg of hydrogen at 700 bar and gives the iX5 an estimated range of 385 miles. BMW plans to start series production of the iX5 Hydrogen in 2028, using a fuel cell developed in partnership with Toyota. Why this matters: • One of the biggest barriers to hydrogen vehicles has been packaging the tanks without sacrificing interior space or requiring completely separate production lines • This modular “flat storage” approach makes hydrogen powertrains much more practical to manufacture at scale • It gives BMW flexibility to produce multiple powertrains on one platform depending on demand and regional infrastructure The deeper implication: While battery electric vehicles currently dominate, BMW is continuing to develop hydrogen as a parallel technology, particularly for larger vehicles and longer-range applications. Being able to build both BEVs and FCEVs on the same line is a pragmatic engineering step that could make hydrogen vehicles more commercially viable in the future if the refuelling infrastructure catches up. Follow for more frontier automotive and energy technology.

TheNewPhysics

2,071,461 次观看 • 2 个月前

🚨 A HYDROGEN FUEL CELL SUBMARINE DRONE JUST ACHIEVED WHAT BATTERY-POWERED AUVs HAVE FAILED AT FOR 15 YEARS LONG ENDURANCE, DEEP DEPTH, AND ACOUSTIC STEALTH ALL AT ONCE. The Envoy AUV from Cellula Robotics completed a fully submerged mission covering 2,023 km over 385 hours. Crucially, it did this with a realistic, punishing profile: more than 4,000 turns and maneuvers, not a simple straight-line test. It also operates at depths up to 3,000 meters and produces almost no acoustic signature. Powered by proton exchange membrane (PEM) hydrogen fuel cells, the only byproduct is water. This breaks the long-standing trade-off in autonomous underwater vehicle design where improving one capability (range, depth, or stealth) usually destroys the others. Why this matters: • Battery AUVs have been fundamentally limited by energy density adding more batteries increases weight and drag, which cancels out the gains • Hydrogen fuel cells deliver more than twice the energy density of lithium-ion batteries while enabling true long-endurance missions without frequent surfacing • The vehicle can loiter on the seabed using a suction anchor for days or weeks, dramatically changing operational concepts for pipeline inspection, cable monitoring, and naval surveillance • It is already in the hands of Defence Research and Development Canada The deeper implication: This is more than just an impressive endurance record. It represents a genuine shift in what is possible for persistent, covert subsea operations. For navies and offshore industries that have spent years compromising between mission duration, depth capability, and detectability, hydrogen fuel cells are now offering a practical way to stop making those trade-offs. As these systems mature and scale, we could see a new generation of autonomous underwater platforms that operate for weeks or months with minimal support fundamentally changing how we monitor critical infrastructure, conduct scientific surveys, and maintain undersea awareness. How do you think hydrogen-powered AUVs will change subsea operations compared to today’s battery-limited systems? Follow for more frontier robotics, energy, and defense technology.

TheNewPhysics

110,556 次观看 • 1 个月前

:Scientists Capture the Birth of Water, Atom by AtomFor the first time ever, researchers have directly observed hydrogen and oxygen atoms combining in real time to form tiny nanoscale bubbles of water—essentially witnessing one of chemistry’s most fundamental reactions at the molecular early 2024, a team from Northwestern University unveiled a groundbreaking imaging technique that traps gas molecules inside tiny, honeycomb-shaped nanoreactors sealed by ultra-thin glassy membranes. This innovation allows scientists to observe chemical processes in real time using high-vacuum transmission electron microscopes, something previously impossible for gaseous reactions.The team, led by Professor Vinayak Dravid and including first author Yukun Liu, turned their attention to a century-old puzzle: how palladium—a rare metallic element—acts as a powerful catalyst to rapidly combine hydrogen and oxygen into water As Yukun Liu explained: “It’s a known phenomenon, but it was never fully understood. You really need both direct visualization of the reaction and atomic-level structural analysis to figure out exactly what’s happening.”What they saw was astonishing.Using their nanoreactor platform, the researchers watched hydrogen atoms diffuse into a palladium nanocube, causing its crystal lattice to expand slightly. Then, when oxygen was introduced, the gases reacted at the surface. Suddenly, tiny water bubbles began to nucleate and grow right before their eyes on the palladium surface.“We think it might be the smallest bubble ever formed that has been directly viewed,” said Liu. “It’s not what we were expecting. Luckily, we were recording it—so we could prove to others that we weren’t crazy.” The bubbles were confirmed to be water using electron energy-loss spectroscopy and heating experiments. Remarkably, the reaction occurs efficiently at room temperature, and palladium itself is recyclable—it doesn’t get consumed in the process. The order in which the gases are introduced also plays a key role in the speed of water formation.This direct, atomic-scale observation not only solves a long-standing mystery in catalysis but could also inspire new technologies: from more efficient ways to generate clean water in remote or arid environments to improved hydrogen fuel cells and even systems for producing water in space.What once seemed like “water from thin air” is now literally visible—captured in stunning detail at the nanoscale. This breakthrough highlights how advanced imaging tools are unlocking secrets of matter that have remained hidden for generations.The study was published in the Proceedings of the National Academy of Sciences (PNAS) in 2024.

Black Hole

31,895 次观看 • 3 个月前

🚨 THE ENERGY TECHNOLOGY THAT COULD POWER CIVILIZATION FOR THE NEXT 100 YEARS ISN'T FUSION. Molten Salt Reactors use molten fluoride or chloride salts as coolant and in some designs, the nuclear fuel itself is dissolved directly into that salt. This is very different from traditional reactors. Instead of solid fuel rods sitting in water under high pressure, these systems run at much higher temperatures but at atmospheric pressure, which dramatically reduces the risk of explosions or meltdowns. The salt can flow over solid fuel, or the fuel can be mixed directly into the coolant. Both approaches are being actively developed. Why this matters: • MSRs operate at high temperatures, making them potentially much more efficient at generating electricity and process heat • Low-pressure operation makes them inherently safer than conventional water-cooled reactors • Some designs can burn existing nuclear waste or use thorium as fuel • The technology could support everything from advanced power generation to hydrogen production and industrial heat The deeper implication: For decades, nuclear power has been dominated by one basic design concept. Molten salt reactors represent a fundamental rethink using a liquid that can act as both coolant and fuel. This opens the door to reactors that are safer, more flexible, and potentially capable of solving some of nuclear energy’s biggest historical challenges (waste, fuel efficiency, and public perception of safety). While still in development, MSRs are one of the most promising pathways for next-generation nuclear power. We may be looking at the early stages of a genuinely new chapter in how humanity generates clean, reliable energy. Do you think molten salt reactors will become a major part of the future energy mix, or will traditional designs continue to dominate? Follow for more frontier energy technology and next-generation nuclear systems.

TheNewPhysics

72,943 次观看 • 2 个月前