2-in-1 device also uses supercapacitor to store energy that could power computers and smartphones
UCLA researchers have designed a device that can use solar energy to inexpensively and efficiently create and store energy, which could be used to power electronic devices, and to create hydrogen fuel for eco-friendly cars.
The device could make hydrogen cars affordable for many more consumers because it produces hydrogen using nickel, iron and cobalt — elements that are much more abundant and less expensive than the platinum and other precious metals that are currently used to produce hydrogen fuel.
“Hydrogen is a great fuel for vehicles: It is the cleanest fuel known, it’s cheap and it puts no pollutants into the air — just water,” said Richard Kaner, the study’s senior author and a UCLA distinguished professor of chemistry and biochemistry, and of materials science and engineering. “And this could dramatically lower the cost of hydrogen cars.”
The technology, described in a paper in the journal Energy Storage Materials, could be especially useful in rural areas, or to military units serving in remote locations.
“People need fuel to run their vehicles and electricity to run their devices,” Kaner said. “Now you can make both electricity and fuel with a single device.”
It could also be part of a solution for large cities that need ways to store surplus electricity from their electrical grids.
“If you could convert electricity to hydrogen, you could store it indefinitely,” said Kaner, who also is a member of UCLA’s California NanoSystems Institute.
Traditional hydrogen fuel cells and supercapacitors have two electrodes: one positive and one negative. The device developed at UCLA has a third electrode that acts as both a supercapacitor, which stores energy, and as a device for splitting water into hydrogen and oxygen, a process called water electrolysis. All three electrodes connect to a single solar cell that serves as the device’s power source, and the electrical energy harvested by the solar cell can be stored in one of two ways: electrochemically in the supercapacitor or chemically as hydrogen.
The device also is a step forward because it produces hydrogen fuel in an environmentally friendly way. Currently, about 95 percent of hydrogen production worldwide comes from converting fossil fuels such as natural gas into hydrogen — a process that releases large quantities of carbon dioxide into the air, said Maher El-Kady, a UCLA postdoctoral researcher and a co-author of the research.
“Hydrogen energy is not ‘green’ unless it is produced from renewable sources,” El-Kady said. He added that using solar cells and abundantly available elements to split water into hydrogen and oxygen has enormous potential for reducing the cost of hydrogen production and that the approach could eventually replace the current method, which relies on fossil fuels.
Combining a supercapacitor and the water-splitting technology into a single unit, Kaner said, is an advance similar to the first time a phone, web browser and camera were combined on a smartphone. The new technology may eventually lead to new applications that even the researchers haven’t considered yet, Kaner said.
The researchers designed the electrodes at the nanoscale — thousands of times thinner than the thickness of a human hair — to ensure the greatest surface area would be exposed to water, which increases the amount of hydrogen the device can produce and also stores more charge in the supercapacitor. Although the device the researchers made would fit in the palm of your hand, Kaner said it would be possible to make larger versions because the components are inexpensive.
“For hydrogen cars to be widely used, there remains a need for a technology that safely stores large quantities of hydrogen at normal pressure and temperature, instead of the pressurized cylinders that are currently in use,” said Mir Mousavi, a co-author of the paper and a professor of chemistry at Iran’s Tarbiat Modares University.
The Latest on: Hydrogen production and storage
- How to retrieve 36% in power losses at the solar-to-electrolysis end of hydrogen productionon May 2, 2021 at 3:16 pm
An Australian innovation, the unassuming-looking CQSola power controller has under-the-hood smarts that could significantly cut the cost of hydrogen produced using solar energy.
- Equinor links up with Norwegian pair for blue and green hydrogen driveon April 30, 2021 at 4:25 am
Equinor and two partners are putting more than $15 million into a new fund that is aiming to invest in blue and green hydrogen projects in Norway and elsewhere. Green hydrogen is hydrogen that is ...
- Iberdrola announces latest green hydrogen project with BP and Enagason April 28, 2021 at 3:59 am
Spanish energy giant Iberdrola has partnered with oil and gas majors bp and Enagas on a feasibility study to develop a large-scale green hydrogen project in Valencia.
- Clean hydrogen production could be brought below $2/kg by 2030, says new reporton April 27, 2021 at 7:20 am
The production cost of clean hydrogen could be brought well below $2/kg by 2030, says a new report released today (27 th April). Making the Hydrogen Economy Possible: Accelerating clean hydrogen in an ...
- Clean electrification and hydrogen can deliver net-zero by 2050, says global private-sector coalitionon April 26, 2021 at 4:14 pm
Stock quotes by finanzen.net LONDON, April 27, 2021 /PRNewswire/ -- The Energy Transitions Commission (ETC), a coalition of more than 45 leaders from global energy producers, energy industries, ...
- Hydrogen Electrolyzer Market Size, Overview, Growth Factors, Demand, Trends and Forecast to 2026on April 26, 2021 at 1:53 pm
Selbyville, Delaware, Market Study Report, LLC, now offers a detailed analysis of the Hydrogen Electrolyzer market in a new research that provides valuable business insights including revenue share, ...
- Toyota and Chevron Plan to Explore Hydrogen Business Opportunitieson April 23, 2021 at 11:19 am
Major companies continue to search of opportunities to develop new businesses in the race to develop sustainable and low carbon fuel sources. U.S. oil giant Chevron and Toyota Motor North America ...
- Electrolyzers Could be Vital for Increased Green Hydrogen Productionon April 21, 2021 at 1:22 am
Despite being in the early stages, there is strong support for the use of electrolyzers for green hydrogen production, with the European Parliament highlighting its importance in the future economy in ...
- Hydrogen is one future fuel oil execs and environmentalists could both support as rival countries search for climate solutionson April 20, 2021 at 5:30 am
Many oil companies are still planning for fossil fuel use to continue well into the future. Katja Buchholz/Getty ImagesTehran, 1943: Joseph Stalin, Franklin D. Roosevelt and Winston Churchill – hosted ...
- Global Hydrogen Storage Tank Market Analysis and Forecast by Key Manufacturers, Product, Application and Geography 2021-2026on April 20, 2021 at 12:26 am
Apr 20, 2021 (The Expresswire) -- "Final Report will add the analysis of the impact of COVID-19 on this industry." The global “Hydrogen Storage Tank ...
via Google News and Bing News