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Posted on August 26, 2016

Researchers invent novel materials for better batteries

Autonomous Vehicles Land, Water, Air 2017-2037
Inventors at Kansas State University and Catalyst Power Technologies Inc. are paving the way for the future with energy-efficient batteries for sensors, portable devices and electric cars.
Jun Li, professor of chemistry; Steven Klankowski, May 2015 chemistry doctoral graduate, La Crescent, Minnesota; and Ronald A. Rojeski, Catalyst Power Technologies Inc., Santa Clara, California, received a patent for their lithium-ion battery anode, including a core-shell heterostructure of silicon-coated vertically aligned carbon nanofibers.
The inventors are adjusting structure, composition and other factors to store more energy per gram, thereby reducing the battery's weight, making it run longer and improving the power output.
The invention has been featured in about 30 presentations and publications, and was on the cover of the Journal of Materials Chemistry A, a scientific journal published by the Royal Society of Chemistry. The patent was issued to the Kansas State University Research Foundation, a nonprofit corporation responsible for managing technology transfer activities at the university.
This invention uses silicon rather than graphite or other carbonaceous materials — common anodes in current commercial batteries — so it provides higher capacity limits, shorter charging periods and significantly longer battery lifetimes.
Solid-State and Polymer Batteries 2017-2027
"One key component of the electric car is the battery, so we ask, 'After it is charged, how many miles can you drive?'" Li said. "We also examine how long it takes to charge the battery after it's used."
The price point is pivotal. For example, 70 percent of the cost of Tesla's newest version, the Model 3, goes to the battery, according to Li. Unveiled July 29, the new model is scheduled to hit the market in late 2017 with a projected cost of $35,000.
"To lower the cost is one thing, but just as important is if you can create a better battery with a similar cost," Li said. "If the batteries are priced similarly, but this battery can run longer and provide more energy, it's equivalent to the advantage of paying less."
In addition to all-electric cars, the batteries could be used in hybrid vehicles, portable electronics, power tools and military and outer space applications. National Science Foundation, NASA and the state of Kansas have provided funding for the research. Catalyst Power Technologies Inc. is pushing this technology to the market.
"After 28 years working with these nanomaterials, it is highly rewarding to find an application with such influence on the future of transportation and electronics," Li said. "I am excited to see our work in the lab transfer to industry products."
Electric Vehicle Energy Harvesting/Regeneration 20
Source and top image: Kansas State University
Learn more at the next leading event on the topic: Energy Independent Electric Vehicles 2017 External Link on 27 - 28 Sep 2017 in TU Delft, Delft, Netherlands hosted by IDTechEx.