In an effort to make safer, longer-lasting Lithium-ion batteries for technologies like electric vehicles, smartphones and laptops, a University of Michigan startup has formed a $1.5 million joint venture with two major players in the industry.

Ann Arbor-based Elegus Technologies recently announced their new partnership with Michigan-based manufacturing companies: XALT Energy and Energy Power Systems. Additional terms of the joint venture were not disclosed.

Elegus has developed an advanced battery separator that allows for increased energy density in Lithium ion cells without compromising safety. Increased energy density means longer battery life. For example, this translates to greater range per charge for an electric vehicle. Elegus’s separator is made from nanofibers extracted from Kevlar, the tough material in bulletproof vests. It blocks the formation of dendrites—metal tendrils that can grow and bridge the electrodes, short the circuit and even cause a fire. Limiting dendrite growth is one of battery developers’ biggest challenges.

“This joint venture will showcase the power of collaboration between Michigan companies towards a common goal,” said Elegus CEO John Hennessy. “In our industry, it is rare for a startup like us to pair with large manufacturers. It’s great that we have overlap in what industry is trying to solve: lithium-ion battery safety issues still persist, but instead of accepting those issues as inherent to battery technology, we are all working together to find a better solution.”

Dennis Townsend, XALT Chairman of the Board of Directors, is equally enthusiastic.

“The Elegus separator will be the solution that will enable XALT to achieve its higher energy roadmap while maintaining safety,” Townsend said. “As improvements in technology allow higher and higher energy density Lithium-ion batteries, safety issues become far more challenging. Elegus’ advanced separator solution provides excellent electrical performance and dimensional integrity.”

The technology was initially invented in the lab of Nick Kotov, the Joseph B. and Florence V. Cejka Professor of Engineering and a professor of chemical engineering, biomedical engineering, materials science and engineering and macromolecular science and engineering. Kotov was first introduced to Hennessy, along with fellow Elegus CFO Long Qian, through the Master of Entrepreneurship program offered jointly by Michigan Engineering and the Ross School of Business. During the Master’s program, the team refined the technology and took the first step toward

commercialization which led them to participate in the National Science Foundation’s I- Corps™ program.

Hennessy specifically attributed credit of the patent-pending battery separator technology to the Michigan Translational Research and Commercialization (MTRAC) Transportation program, run jointly by the U-M Center for Entrepreneurship and the Office of Technology Transfer.

“The MTRAC program was there for us for the longest amount of time,” Hennessy said. “Beyond the funding the program offered, the countless hours of advising and industry connections made were invaluable and crucial to securing this investment.” He named Jay Ellis, MTRAC transportation program director; Meera Vijan, a mentor-in-residence at the Tech Transfer Venture Center; and Mike Psarouthakis, assistant director of the Venture Center.

“We are pleased to see Elegus partner with a Michigan-based company,” said Ellis. “This is a shining example of how the state of Michigan and U-M continue to foster an ecosystem for entrepreneurs and innovation.”’

Elegus received $175,000 in funding from MTRAC program as part of the Michigan Economic Development Corporation’s Entrepreneur and Innovation initiative, which focuses on establishing Michigan as the place to create and grow a business by providing high-tech startup companies with access to a variety of resources.


By: Jane Sugiyama, CFE Researcher Coordinator & Nicole Casal Moore, U-M Research News Director 


Three Reasons that Flint is Michigan’s Most Resilient City


  By Kate Toporski, CFE Content Development Intern   As said by Flint Mayor, Dr. Karen Weaver, “Flint is a...

A2CS Tech Mixer


For Students: Ann Arbor’s exciting tech industry is growing – and you can find great career or internship opportunities right...

take a Step Forward