An efficient method to harvest low-grade waste heat as electricity may be possible using reversible ammonia batteries, according to Penn State engineers.
“The use of waste heat for power production would allow additional electricity generation without any added consumption of fossil fuels,” said Bruce E. Logan, Evan Pugh Professor and Kappe Professor of Environmental Engineering. “Thermally regenerative batteries are a carbon-neutral way to store and convert waste heat into electricity with potentially lower cost than solid-state devices.”
Low-grade waste heat is an artifact of many energy-generating methods. In automobiles, waste heat generated in winter is diverted to run the vehicle heating system, but in the summer, that same waste heat must be dissipated to the environment. Coal, nuclear and other power plants require high heat to produce electricity, but after producing electricity the excess waste heat is routed to cooling towers to dissipate. Many industrial sites, geothermal sources or solar generating plants also create low-grade heat that is wasted.
The researchers want to take this waste heat and capture it to produce more power. Other researchers have tried a variety of methods, but most produce too little power to be workable, or they cannot provide a continuous resource. Logan and his team are using a thermally regenerated ammonia-based battery that consists of copper electrodes with ammonia added only to the anolyte — the electrolyte surrounding the anode.
“The battery will run until the reaction uses up the ammonia needed for complex formation in the electrolyte near the anode or depletes the copper ions in the electrolyte near the cathode,” said Fang Zhang, postdoctoral fellow in environmental engineering. “Then the reaction stops.”
This type of battery would be useless as a constant source of electricity if the reaction were not regenerative. Using low-grade waste heat from an outside source, the researchers distill ammonia from the effluent left in the battery anolyte and then recharge it into the original cathode chamber of the battery.
The chamber with the ammonia now becomes the anode chamber and copper is re-deposited on the electrode in the other chamber, now the cathode, but formerly the anode. The researchers switch ammonia back and forth between the two chambers, maintaining the amount of copper on the electrodes.
“Here we present a highly efficient, inexpensive and scalable ammonia-based thermally regenerative battery where electrical current is produced from the formation of copper ammonia complex,” the researchers report in the current issue of Energy and Environmental Science. They note that the ammonia liquid stream can convert the thermal energy to electrical energy in the battery. “When needed, the battery can be discharged so that the stored chemical energy is effectively converted to electrical power.”
The Latest on: Ammonia battery
via Google News
The Latest on: Ammonia battery
- Should the Hydrogen Economy Actually Be an Ammonia Economy?on October 7, 2020 at 9:51 am
Fritz Haber won the Nobel Prize in 1918 for inventing what became known as the Haber-Bosch process (Bosch made it more efficient), which takes nitrogen out of the air and reacts it with hydrogen to ...
- Marine Equipment Newson October 6, 2020 at 5:00 pm
Harvey Gulf International Marine announced Thursday it will install 10 battery systems on board eight of its vessels as the U.S. An ammonia-fueled tanker design developed by South Korean ...
- New project develops groundbreaking fuel solution for ships and offshoreon October 5, 2020 at 3:58 am
A fuel cell pilot system that can use different types of fuel was presented to Norwegian Prime Minister Erna Solberg last week by Odfjell, Prototech, Wärtsilä and Lundin Energy Norway.
- Norway’s fuel cell technology claims huge reduction in CO2 emissionson October 4, 2020 at 6:59 pm
A new and flexible fuel cell technology, a project developed by Norwegian companies, has proven that it can reduce carbon dioxide (CO2) emissions from shipping by 40% to 100%.
- Fuel Cell Project Develops Ground-Breaking Fuel Solution For Ships And Offshoreon October 2, 2020 at 5:00 pm
The new technology opens for many different types of fuel, including green ammonia and LNG ... emission-free operation over long distances. Battery solutions are currently not suitable for ...
- The 30 most impressive science fair projects in the countryon October 2, 2020 at 1:50 pm
At age 12, Audrey Glende has found a way to help save lives — fish lives. Glende realized that fish waste produces the toxic chemical ammonia that can accumulate to dangerous amounts in new ...
- Odfjell to pilot new flexible fuel cell technologyon October 2, 2020 at 8:47 am
Norwegian Prime Minister Erna Solberg yesterday got a first-hand briefing on new and flexible fuel cell technology said to reduce emissions from shipping by 40% to 100%. Prime Minister Solberg was att ...
- Saudi Aramco and Sabic announce first shipment of ‘blue’ ammoniaon September 28, 2020 at 10:41 am
Saudi Aramco and the Institute of Energy Economics, Japan (IEEJ), in partnership with SABIC, have successfully demonstrated the production and shipment of ...
- Mitsubishi Power Established With Renewed Commitment to Transforming Energy Systems Around the Worldon August 31, 2020 at 5:01 pm
ammonia, battery energy storage systems and solar power. YOKOHAMA, Japan--(BUSINESS WIRE)-- Mitsubishi Power, a major subsidiary of the Mitsubishi Heavy Industries (MHI) Group, officially changed ...
- Ammonia Can Officially Work As Jet Fuelon August 31, 2020 at 7:49 am
Ammonia is one of the most plentiful chemicals that humans ... but no single solution makes complete sense yet: “Battery technology does not currently have the power density required to give a ...
via Bing News