https://padlet.com/millie_parks16/9ds48zp80ugt A look into a future renewable, including advantages and disadvantages en-us 2017-01-28 11:43:53 UTC 2025-10-09 03:52:23 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Brightnessdown.png millie_parks16 https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032000
Hydrogen;
-Can be stored indefinitely
-Has the highest energy density of any gas or   liquid fuel.
-The production usually occurs in power plants & produces large volumes of very harmful pollutants.
Solar panels can only produce so much electricity in day time, then store a limited amount in its batteries. ]]> 2017-01-28 11:47:51 UTC https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032000 millie_parks16 https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032051 Peidong Yang -a chemical engineer at University California Berkeley- is developing efficient solar fuel cells that transform normal water into hydrogen. 
Yang and his colleagues have developed a new, metal-based material that could be used in solar fuel cells. These fuel cells—in a one-step process—would split apart an incoming flow of liquid water into steady streams of oxygen and hydrogen gas, with nothing more than a gentle influx of sunlight.  ]]> 2017-01-28 11:49:12 UTC https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032051 millie_parks16 https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032080 http://www.popularmechanics.com/science/energy/a19292/were-one-step-close-to-creating-fuel-cells-from-solar-energy/
http://hypersolar.com/technology.php ]]> 2017-01-28 11:50:12 UTC https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032080 millie_parks16 https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032122 Hydrogen-producing solar fuel cells are still too wasteful and far from commercially viable- even with the new material. It is currently a 'conceptual framework for developing even better anode materials' due to lack of development. 
Pure hydrogen does not exist naturally on Earth and therefore must be manufactured. Historically, the cost of manufacturing renewable hydrogen as an alternative fuel has been higher than the cost of the energy used to make it. 
Conventional electrolysis requires highly purified clean water to prevent fouling of system components]]> 2017-01-28 11:51:45 UTC https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032122 millie_parks16 https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032176 Hydrogen is the most abundant element and cleanest fuel in the universe as fuel usage produces only pure water as the by-product. 
This technology can be used to produce an unlimited amount of clean and renewable hydrogen fuel to power a carbon-free world. 
However, in practice, current commercial electrolysis technologies require (a) expensive electricity, and (b) highly purified water to prevent fouling of system components. We believe these are the major barriers to affordable production of renewable hydrogen. ]]> 2017-01-28 11:53:20 UTC https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032176 millie_parks16 https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032266 Hydrogen-forming solar fuel cells require two different materials for both the cathode and anode side of cell.
The anode side rips oxygen from water in a process called solar electrolysis, and the cathode side produces the flow of hydrogen gas. Currently, anodes and cathodes are very inefficient and need to be further developed. 
In the process of splitting a water molecule, input energy is transferred into the chemical bonds of the resulting hydrogen molecule.]]> 2017-01-28 11:56:17 UTC https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032266 millie_parks16 https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032302  If technology can be developed to mimic photosynthesis to split water into hydrogen, then a truly sustainable, low cost, and renewable energy cycle can be created to power the Earth for millenniums. However, cost has been the biggest barrier to realizing this vision which is why we should invest in it.]]> 2017-01-28 11:57:23 UTC https://padlet.com/millie_parks16/9ds48zp80ugt/wish/150032302