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Posted on March 29, 2019 by  & 

Novel dual electrolyte system gives high energy density

CTO of 24M, Naoki Ota, says company's unique Dual Electrolyte System makes it possible to manufacture cells with compositionally distinct electrolytes — anolytes and catholytes — at scale, enabling next-generation chemistries capable of providing industry-leading energy density (+ 350Wh/kg), while improving cycle life, safety and cost. For more information see the IDTechEx report on Advanced Li-ion & Beyond Li-ion Batteries 2018-2028.
The 24M SemiSolid electrode platform provides the foundation for its Dual Electrolyte System, dramatically improving overall manufacturing capital efficiency, while allowing distinct approaches to cell design and chemistry. The novel 24M cell architecture uses an ionically conductive, non-permeable separator to isolate the anolyte from the catholyte, while eliminating solid-to-solid interface issues that have plagued full solid-state approaches to date. 24M's work with numerous world-class materials manufacturers has shown this approach will be both manufacturable and cost-effective.
"Using compositionally distinct electrolytes is a game changer for battery manufacturing and we've proven the fundamental technology," said Rick Feldt, President and CEO of 24M. Naoki says the 24M Dual Electrolyte System expands the universe of potential electrolytes, including water and other materials that to-date have not been compatible with both the anode and cathode simultaneously.
The architecture of the 24M cell and manufacturing process for SemiSolid electrodes have been proven via many tens-of-thousands of cells over the past eight years of development. This work has laid the foundation for the development of the Dual Electrolyte System.
"The unique 24M approach to compositionally distinct electrolytes makes it possible for 24M to embark on radical new directions in anode and cathode chemistry," said Koji Hasegawa, General Manager, Industrial Chemicals Department, Itochu Corporation. "Seldom in lithium-ion battery development has such a possibility been realizable, but the advancement in solid-state ion conductors and 24M's SemiSolid electrodes opens this possibility."
Source and top image: 24M
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