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Researchers Generate Electricity Using Seawater and Sunlight
Slashdot reader sosume writes: Scientists at Osaka University have created a new method to use sunlight to turn seawater into hydrogen peroxide which can then be used in fuel cells to generate electricity. It's the first photocatalytic method of H2O2 production that achieves a high enough efficiency so that the H2O2 can be used in a fuel cell.
It's easier and safer to transport liquid H2O2, according to the article, and while its total efficiency is much lower than conventional solar cells, the researchers hope to get better results by using better materials.
It's easier and safer to transport liquid H2O2, according to the article, and while its total efficiency is much lower than conventional solar cells, the researchers hope to get better results by using better materials.
There's more than enough energy that can be generated with traditional solar to power all of the world's energy needs. It's also far more efficient. As mdsolar has elegantly pointed out over and over again, alternative sources of energy other than solar are inefficient and try to solve a problem that doesn't exist. Solar panels can easily supply enough energy to meet the world's needs many times over.
Compared to what? Hydrogen? Why the pivot over to comparing against conventional solar cells? What?
I believe NOTHING! cold fusing crazies
I think I saw one of those rapist women from the "Falko" videos living ni Gravataí/RS/Brazil. The still rape kids every weekend. I think her name is Jaqueline or Helena or Fernanda. Whatever, it's a fake name... But her daddy still drives the white Camaro.
Widespread and common storage of hydrogen peroxide won't be welcomed in some quarters, as it's is a very well known agent of homebrew bombs.
URL:http://news.bbc.co.uk/1/hi/uk/6274299.stm/
They got 33 years.
Hydrogen Peroxide is not electricity
Low molar solutions of Hydrogen Peroxide in sea water aren't particularly useful for anything.
If they used salt water from Fukushima, it should store energy for 10,000 plus years, ie. half life.
Life is in a state of dynamic equilibrium, it both blows and sucks
Research like this offers great hope for all of us. I wonder what concentration of hydrogen peroxide is required for use in a fuel cell. Obviously in its pure form it is great as rocket fuel.
I know how to generate electricity using sunlight and no seawater at all!
Anons need not reply. Questions end with a question mark.
Pure hydrogen peroxide is some pretty nasty stuff, it will cause serious burns and burns/explodes under some circumstances (boiled, contact with silver, etc). It can be made safer by diluting it in water but that would also effect its fuel storage potential. I assume that it would be a pretty environmentally friendly fuel since it naturally decomposes into water and oxygen but on its way there it would be far more hazardous to humans in the case of spills. I'd happily deal with the stuff over gas (especially if I could make my own with some creek water and I assume a few chemicals to make it more "ocean like") but I don't know if most would be so willing.
Pump water vertically up when there is excess energy. When there isn't, let it run downhill through a turbine.
Smallish elevated steel water tanks (which are recyclable when EOL is reached) will do for small installations. Since they're up high, they can be very close to zero-footprint. For large ones, lakes work, though there's a definite real estate issue there, and artificial lakes are better because there's better leakage control. People tend to like lakes, too. As long as it doesn't require them to give up their property...
Pumped storage worldwide: Supply capacity: 127 GW; Reserve capacity: 740 TWh; efficiency 70...80%, some claims made for more.
Awesome stuff.
I've fallen off your lawn, and I can't get up.
Researchers are developing a new type of environmentally friendly fuel cell that runs on aluminum and renewable resources and generates about 20 times more electricity per pound than car batteries.
https://www.sciencedaily.com/r...
This uses sea water.
Fish and other stuff lives in sea water
You will use all the sear water!
Think of the fish!
It's a dumb idea- don't try this at home- but in principle there's no reason why you couldn't make an engine that runs on TNT.
TNT explosions are sooty. When TNT detonates it forms nitrogen gas and steam, but also carbon monoxide and elemental carbon which are both flammable- so you actually get more energy out of TNT if you burn it with oxygen instead of detonating it. TNT is pretty stable and was originally used as a yellow dye for years before anyone even realized it could explode (or that it was toxic). It can be melted and aerosolized like gasoline or diesel into a flammable fuel-air mixture. But since it melts at 80 degrees, it would be like making a ICE engine that runs on melted wax. It would also generate YUGE amounts of nitrogen oxides and would be much filthier than diesel. In general nitrogen is not something you want in an internal combustion engine, and there are plenty of organic molecules that don't contain nitrogen at all. From an emissions perspective, THC would be a much better fuel than TNT.
TNT also has catalytic properties (it can form charge-transfer complexes) so it might actually be useful in something like a battery.
This is going to happen regardless with automation and AI as we've already seen. Perhaps it's finally time to consider alternatives such as Universal Basic Income.
Freedom to fear. Freedom from thought. Freedom to kill.
I guess the War on Terror really is about freedom!
H2O2 is also an excellent ingredient in homebrew explosives and incendiaries, to the point that concentrated forms of it are highly regulated, even to the ludicrous level that in some countries they have discussed banning hair bleach containing peroxide. Even in the US, solutions more concentrated than (I think) about 5-6% H2O2 are not legal without special permits. Good luck transporting barrels of the pure stuff.
An energy company has an all-blonde workforce.