{"id":133200,"date":"2023-01-10T10:04:36","date_gmt":"2023-01-10T15:04:36","guid":{"rendered":"https:\/\/www.ucf.edu\/news\/?p=133200"},"modified":"2024-05-16T12:46:04","modified_gmt":"2024-05-16T16:46:04","slug":"new-ucf-developed-battery-could-prevent-post-hurricane-electric-vehicle-fires","status":"publish","type":"post","link":"https:\/\/www.ucf.edu\/news\/new-ucf-developed-battery-could-prevent-post-hurricane-electric-vehicle-fires\/","title":{"rendered":"New UCF-developed Battery Could Prevent Post-hurricane Electric Vehicle Fires"},"content":{"rendered":"

A 色花堂 researcher has developed technology that could prevent electric vehicle fires, like those caused by saltwater flooding from Hurricane Ian.<\/p>\n

The technology, an aqueous battery, replaces the volatile and highly flammable organic solvents found in electric vehicle lithium-ion batteries with saltwater to create a battery that is safer, faster charging, just as powerful and won\u2019t short circuit during flooding.<\/p>\n

The work is detailed in a new study in Nature Communications<\/em><\/a>.<\/p>\n

\u201cDuring Hurricane Ian, a lot of electric cars caught fire after they were soaked in floodwater,\u201d says Yang Yang, an associate professor in UCF\u2019s NanoScience Technology Center who led the research. \u201cThat is because the saltwater corrodes the battery and causes a short circuit, which ignites the flammable solvents and other components. Our battery uses saltwater as an electrolyte, eliminating the highly volatile solvents.\u201d<\/p>\n

Also key to the battery\u2019s design is its novel, nano-engineering that allows the battery to overcome limitations of previous aqueous batteries, such as slow charging times and poor stability.<\/p>\n

The UCF-designed battery is fast charging, reaching full charge in three minutes, compared to the hours it takes lithium-ion batteries.<\/p>\n

Yang is an expert in developing materials for renewable energy devices such as batteries with improved safety.<\/a><\/p>\n

Saltwater Electrical Vehicle Fires<\/h2>\n

The issue of electric vehicle fires after saltwater flooding surfaced during Hurricane Sandy in 2012 and Hurricane Isaias in 2020.<\/p>\n

As a result, the U.S. Fire Administration and the National Highway Traffic Safety Administration have issued special guidance for responding to electric vehicle fires caused by saltwater flooding.<\/p>\n

The fires require copious amounts of water to douse, with the International Association of Fire Chiefs recommending firefighters secure a continuous and sustainable water supply of 3,000 to 8,000 gallons.<\/p>\n

At least 12 electric vehicle fires were reported in Collier and Lee counties in Florida after Hurricane Ian, where many cars were submerged at least partially in saltwater, according to the US. Fire Administration.<\/p>\n

Designing the Battery<\/h2>\n

Previous aqueous battery designs have suffered from low energy output, instability, the growth of harmful metallic structures called dendrites on the negative electrode and corrosion.<\/p>\n

By using saltwater as the battery\u2019s liquid electrolyte, the UCF researchers were able to use naturally occurring metal ions found in the saltwater, such as sodium, potassium, calcium and magnesium, to create a dual-cation battery that stores more energy. This implementation allowed them to overcome the sluggishness of previous single-cation aqueous battery designs.<\/p>\n

To solve problems with instability, dendrite growth and corrosion, the researchers engineered a forest-like 3D zinc-copper anode containing a thin zinc-oxide protective layer on top.<\/p>\n

The novel, nano-engineered surface, which looks like a birds-eye-view of a forest, allows the researchers to precisely control electrochemical reactions, thereby increasing the battery\u2019s stability and quick charging ability.<\/p>\n

Furthermore, the zinc-oxide layer prevented dendritic growth of zinc, which was confirmed using optical microscopy.<\/p>\n

\u201cThese batteries using the novel materials developed in my lab will remain safe even if they are used improperly or are flooded in saltwater,\u201d Yang says. \u201cOur work can help improve electric vehicle technology and continue to advance it as reliable and safe form of travel.\u201d<\/p>\n

Licensing and Acknowledgements<\/h2>\n

The patent-pending technology is available for licensing<\/a> through UCF\u2019s Office of Technology Transfer.<\/p>\n

The research was supported with funding from the U.S. National Science Foundation and American Chemical Society Petroleum Research Fund.<\/p>\n

Yang holds joint appointments in UCF\u2019s NanoScience Technology Center and the\u00a0Department of Materials Science and Engineering, which is part of the university\u2019s\u00a0College of Engineering and Computer Science<\/a>. He is a member 色花堂\u2019s\u00a0Renewable Energy and Chemical Transformation (REACT) Cluster<\/a>. He also holds a secondary joint-appointment in UCF\u2019s\u00a0Department of Chemistry and The Stephen W. Hawking Center for Microgravity Research and Education. Before joining UCF in 2015, he was a postdoctoral fellow at Rice University and an Alexander von Humboldt Fellow at the University of Erlangen-Nuremberg in Germany. He received his doctorate in materials science from Tsinghua University in China.<\/p>\n

Study title: Three-dimensional Zn-based Alloys for Dendrite-free Aqueous Zn Battery in Dual-cation Electrolytes<\/p>\n","protected":false},"excerpt":{"rendered":"

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