氫能到底好不好，來聽聽鋼鐵人馬斯克怎麼說啦
https://youtu.be/YNV8qi_rJBg
結論：很笨 extremely silly
It's just very difficult to make hydrogen,
store it and use it on a car. Hydrogen is
an energy storage mechanism. It's not a
source of energy. So, you have to get the
hydrogen from somewhere.
實在很難做出氫,儲存它,再用在車上. 氫是個儲存
能源的方式,不是一種能源. 所以你必須從其他地方
取得氫.
If you get the hydrogen from water, so you're
splitting H20. The electrolysis is extremely
inefficient as an energy process. If you took
a solar panel and use the energy from the solar
panel to just charge a battery pack directly,
compared to trying to split water, take the
hydrogen, dump the oxygen, compress the
hydrogen to an extremely high pressure or
liquify it, and then put it in a car and run
the fuel cell, it is about half the efficiency.
It's terrible. What would you do that?
It makes no sense.
如果你把水拿來分解H20. 電解水是效率非常低的過程.
如果你把太陽能板給充電池拿來比, 跟把水分解,拿氫,
丟掉氧,要極高壓壓縮氫或是讓它液態化,再把它放到車
上跑. 這效率差了一半. 太慘了. 為什麼要那樣做?
完全不合理.
And then hydrogen has very low density. It's
a pernicious molecule that likes to get all
over the place. You get metal and .... from
hydrogen. If you get hydrogen leak, it's an
invisible gas. You can't even tell that it's
leaking. And it's extremely flammable. When
it does, it has an invisible flame.
而且氫的密度很低. 是很危險的分子會到處竄....如果
氫漏出來,是隱形的,你也看不出來在漏. 又易燃,燃燒
的火也是隱形的.
If you're gonna pick an energy storage mechanism.
Hydrogen is an incredibly dumb one to pick. You
should just pick methane. That's much much easier.
Or propane.
如果你要選儲存能量的方法,氫是非常愚蠢的選擇.不如選
甲烷,簡單多了. 或是丙烷.
The best case hydrogen fuel cell doesn't win
against the current case of batteries, so then
obviously it doesn't make sense. That will
become apparent in the next few years. There is
no reason for us to have this debate. I've said
my piece on this. It will be super obvious as
time goes by. I don't know what more to say.
最理想的氫能燃料電池贏不過現有的電池,所以這很明顯不
合理. 再過幾年會更明白, 我們不需要在這裡辯論. 我要
說的就是這樣. 過些時間事情會變得清楚. 我不曉得還有
什麼能說的了.