American researchers use sunlight & water to efficiently create green hydrogen

Hydrogen makes no sense because of the efficiency and storage problems. Batteries are far superior and only gettin better every hour. I learned that from you😊😊

Hydrogen cars are still more complicated in comparison to fully electric cars. the fueling process is still less convenient and requires more personel. And you still cannot fuel home made hydrogen. Electric has still advantages.

Good to hear American researchers have been able to use sunlight and water to produce green hydrogen. FYI, China has been producing green hydrogen by the electrolysis of seawater (most abundant natural resource on our planet) using electricity produced by solar and wind energy for the past 1-2 years. Green hydrogen is in mass production in many areas of China, and I understand the cost is as low as 40cents/cubic metre of hydrogen. Green hydrogen is needed for many industrial purposes, rocket fuel in space program, and also in fuel cells used in trucks (50,000 by 2025), buses, trains and possibly shipping. China by the way is the world's biggest producer and consumer of hydrogen.

After years in energy research with coal, I scumbled to some colleges' work on hydrogen fuel cell. I attended a week's seminar on hydrogen and fuel cell at a government facility in West Virginia. Apart from the hypes, I was not impressed with the overall efficiency and also the total operation sequence and maintenance.

Round trip efficiency. That's all we need to know... to compete with battery storage, it needs to be similar at 85%

The key considerations are cost, scalability and reliability. Building a small prototype is easy, but turning this into an affordable large scale product is a different ball game.

Professor James Tour has a method of breaking down waste plastic into its constituent molecules. The great thing about the process is that the carbon produced is graphene - which is very valuable. So valuable that the hydrogen also produced is essentially free.

H2 is best at larger stationary applications. One where the production and use are closely matched w/ minimal storage. Condensing the H2 into liquid is very costly energy wise. Generally speaking, I don't believe it would be useful for long range vehicles, but possible short range applications. Other technologies seem superior for most of these applications.

Green hydrogen would still lose out to BEVs in cars. Energy efficiency still substantially favours keeping electricity as electricity. Yes, it may better enable big/long range trucks and shipping, but Green H2 will do most good in enabling Green Steel from electric furnaces. Just keep it away from cars.

Hydrogen fuel cells have many valid uses. Makes an excellent high capacity backup system. During a outage you can power your building with a fuel cell, having more delivered as needed. For cars, the big hurdle is storage. If they can perfect a liquid or powder that easily supplies the hydrogen, this could be a big improvement.

Imagine a solar farm that runs a green hydrogen plant that uses the stored hydrogen to power hydrogen turbines to generate power when the solar is off-line.

It makes sense for seasonal energy storage and long distance transportation. Like production in desert areas for use in steel production and airplanes. Etc especially if the efficiency goes up to photo voltaic levels.

A cool discovery, for sure; hydrogen has its place. Probably not in mass produced personal cars, but in locomotives, ocean shipping, heavy hauler trucks and large farm equipment, perhaps also aircraft. Or, given the vast quantities of oil still in the ground, just stick with diesel for those applications and keep improving the emissions scrubbing tech.

H2 would still not be good for cars, but we can use hydrogen in so many ways if it was green like this. Steel and concrete could both benefit from inexpensive green hydrogen. Ships are the other use that might be viable; possibly using a hydrogen gas turbine. Aircraft maybe.

Viking Remember the big problems Storage and Transport. Hydrogen engines run on high pressure, very short engine life. Wayne

Have they changed physics? 😂

Nicely balanced report. Well done, Sam! 🎉😊

SunHydrogen makes green hydrogen using just sunlight and water.

When I worked on merchant ships we burned Bunker C, the leftovers after gasoline, kerosene, and diesel are removed from crude oil. Nasty stuff.

Hydrogen cars by nature will be simply more dangerous than electric batteries. Toyota's hydrogen race car went up in flames i think last 1 or 2 years ago? Liquefying means the hydrogen will be under pressure and that means the thing is explosive or the tank walls have to be really reinforced. The other thing that makes it suck is that they will need tankers to carry the fuel to refueling stations like current oil tankers. Electric rechargers on the other hand needs you to lay power lines and that's it. Cheap hydrogen as a fuel for certain functions would be great but for cars, it just not up to par.