Hypx_

14 ms·

91.
by Hypx_ 5y ago
There is the possibility that Australia is simply correct in their assessment. They're a long ways away from both Silicon Valley and Brussels, and may be acting as an independent entity that is free from external influences.
92.
by Hypx_ 5y ago
The one threat they cannot win against is if batteries become obsolete in the face of advances of hydrogen fuel cell technology. This represents a disruptive event, and something they cannot easily fight against.
93.
by Hypx_ 5y ago
Actually they exist now. You can generate hydrogen directly for sunlight and a photocatalyst. Although we don't know how cost effective this is right now, and the traditional way of having a separate electrolyzer might be cheaper for t
94.
by Hypx_ 5y ago
The problem with (1) is that complaining about this is usually the last bastion of a dying industry. This is particularly true if the alternative is a completely new idea it would normally be much more expensive to begin with. So it would r
95.
by Hypx_ 5y ago
The problem is that now it's hydrogen's turn to do the same with batteries. Tesla is facing it's own disruptive threat, something it is completely unprepared to deal with.
96.
by Hypx_ 5y ago
Hydrogen will ultimately disrupt BEVs into oblivion. This is the obvious disruption event that no one is seeing.
97.
by Hypx_ 5y ago
A hydrogen system is basically the two sides of a battery split into separate components. It's fully possible to build device that does both, although as of today this is less efficient. The galvanic discharge rate is extremely slow an
98.
by Hypx_ 5y ago
You don't need to liquify hydrogen. Simply compression is enough. For large facilities not even that high of a pressure.
99.
by Hypx_ 5y ago
The round-trip efficiency for iron-air is going to be worse or the same as hydrogen-air. They are both the same idea but iron-air is much less mature. The other point is that hydrogen electrolysis and storage is cheap and in fact extremel
100.
by Hypx_ 5y ago
Yes, but hydrogen-air is already cheaper than that. On large scales it is <$1/kWh and easily cheaper than anything can even theoretically attain.
101.
by Hypx_ 5y ago
Except we can store hydrogen quite easily. It is either pumped underground or in tanks, no different than natural gas.
102.
by Hypx_ 5y ago
Actually no. In China they use coal, and this is the predominant way we've been making aluminum in recent years.
103.
by Hypx_ 5y ago
I also heard that iron-air batteries are just another kind of metal-air batteries. The problem is that hydrogen-air batteries already exist, and are basically the same thing. Iron-air is therefore just reinventing of the wheel.
104.
by Hypx_ 5y ago
Hydrogen-air batteries are more than economical: They actually exist now. There's no rational reason to reinvent the wheel with iron-air.
105.
by Hypx_ 5y ago
Iron-air are just another kind of metal-air batteries. The problem with all of them is that hydrogen-air batteries have existed for decades and is basically the same thing. If it wasn't for 20 years of marketing propaganda we'd re
106.
by Hypx_ 5y ago
Just FYI, hydrogen fuel cells are hydrogen-air batteries. There's no rational reason to reinvent the wheel for what is basically an inferior version of hydrogen fuel cells.
107.
by Hypx_ 5y ago
Very cheap hydrogen-air batteries already exist. It funny people are praying for a complete reinvention of what already exists.
108.
by Hypx_ 5y ago
Luckily hydrogen-air batteries have been around for decades.
109.
by Hypx_ 5y ago
Note that with the rise of finFETs we can pull some of those numbers into the 3rd dimension. The effective gate length is higher than the amount of length it takes on the flat plane of the chip. https://semiengineering.com/m
110.
by Hypx_ 5y ago
It's likely that batteries won't be the future of automobile at all. You're just replace one limited resource with another. People also forget that the world economy is still growing and therefore there will be far more cars
111.
by Hypx_ 5y ago
It's actually closer to $0.10/kWh, but we have to account for the cost of upgrades to the infrastructure.
112.
by Hypx_ 5y ago
Hydrogen can be piped via exist natural gas pipelines and stored in existing natural gas salt caverns or abandoned oil wells. So all parts of that statement are true.
113.
by Hypx_ 5y ago
You store hydrogen like you store natural gas: In underground salt caverns. This allows for weeks or months of stored energy.
114.
by Hypx_ 5y ago
The list is a joke. Nigeria, Ethiopia and Kenya are all on the top 8. Due to their large and rapidly growing populations, plus expected future industrialization, all three countries will experience extraordinary increases in GHG emissions.
115.
by Hypx_ 5y ago
Toyota is much more likely to be a major player in the future than Tesla. I don't think Toyota plans on being a leader of anything.
116.
by Hypx_ 5y ago
This. Electric cars are currently at the dialup internet phase of adoption. It's unlikely the current leaders will be the future leaders. Nor will the current technology be the stuff we will use in the future.
117.
Hyundai to provide fuel cell versions of all commercial vehicles by 2028(techcrunch.com)
1 points by Hypx_ 5y ago|0 comments
118.
by Hypx_ 5y ago
> Put these two plots together and you get a 99.6% chance that the objects are clustered, rather than uniform. That sounds pretty good to me. That's not even three-sigma. I'm not sure if this is real evidence of a planet nine.
119.
by Hypx_ 5y ago
> Canalys noted that Apple was the only major PC manufacturer to see negative growth in Q2, due in no small part to waning consumer interest in iPads, according to the report. The company did see a 24% increase in notebook shipments than
120.
by Hypx_ 5y ago
It can be either piped as hydrogen or converted into ammonia.

More ›