New Energy Vehicles (NEVs) in China
- Thread starter supercat
- Start date
Yes. But something like compressed natural gas would be a lot cheaper and more efficient than compressed hydrogen ever will be.
If you also want to liquefy it, liquid natural gas requires a lot less energy to make since it is higher temperature than liquid hydrogen.
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Pump energy storage (hydro or air)
Hydro has very limited locations.
Air looks like 50% more expensive than current lithium iron batteries
But hydrogen might have a much smaller carbon footprint in comparison?
Not if the hydrogen is made from natural gas. The process can be described as 脱了裤子放屁. The process is actually much worst than just burn the damn natural gas
If the hydrogen is renewable, converting it to organic fuels like methane, methanol or formic acid can be done with waste CO2 or waste carbon sources that are burned for electricity (biowaste), which still reduces the carbon footprint.
If the hydrogen is not renewable it is better to just burn fossil fuel.
Well, that's the wrong way to produce hydrogen then. There are ways to produce hydrogen without carbon. This beats all the carbon burning power sources in long run.
Making hydrogen production more efficient and more env-friendly is one side of the coin. The other is to find and test the right use-cases. I don't see why these two tasks cannot go in parallel.
Currently there isn't large scale renewable hydrogen production. There's 2 ways to go about it: direct solar splitting and electrolysis. The problem with direct solar splitting is that pure oxygen and pure hydrogen are reactive towards the electrodes. The problem with electrolysis is that it isn't as efficient as simply storing the electricity in a battery, pumping it into water, etc.