New manufacturing technique tackles a key obstacle confronting the electric vehicle sector. A research group led by Yan Wang, a researcher from Worcester Polytechnic Institute (WPI), has pioneered a solvent-free methodology for the production of lithium-ion battery electrodes. This novel approach y
A team at Worcester Polytechnic Institute, led by Yan Wang, has developed a solvent-free, cost-effective process for producing lithium-ion battery electrodes that charge faster than those currently on the market.A research group led by Yan Wang, a researcher from Worcester Polytechnic Institute , has pioneered a solvent-free methodology for the production of lithium-ion battery electrodes.
“Current lithium-ion batteries charge too slowly, and manufacturers typically use flammable, toxic, and expensive solvents that increase the time and cost of production,” Wang said. “Our solvent-free manufacturing process addresses those disadvantages by producing electrodes that charge to 78 percent of capacity in 20 minutes, all without the need for solvents, slurries, and long production times.
The researchers’ process, in contrast, involved mixing together dry powders that were electrically charged so they would adhere when sprayed onto a metal substrate. The dry-coated electrodes were then heated and compressed with rollers. Skipping the conventional drying and solvent-recovery process cut battery manufacturing energy use by an estimated 47 percent, the researchers reported.
Reference: “Roll-to-roll solvent-free manufactured electrodes for fast-charging batteries” by Yangtao Liu, Xiangtao Gong, Chinmoy Podder, Fan Wang, Zeyuan Li, Jianzhao Liu, Jinzhao Fu, Xiaotu Ma, Panawan Vanaphuti, Rui Wang, Andrew Hitt, Yavuz Savsatli, Zhenzhen Yang, Mingyuan Ge, Wah-Keat Lee, Bryan Yonemoto, Ming Tang, Heng Pan and Yan Wang, 10 May 2023,Wang has long been focused on improving lithium-ion batteries and reducing the waste they create.
WPI has filed a patent application on the manufacturing technology developed by Wang’s team. In addition, Wang and one of his collaborators, Heng Pan of Texas A&M University, co-founded AM Batteries Inc., a venture-backed company that is working with Amperex Technology Limited and other companies to scale up solvent-free electrode manufacturing.
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