SENKA Co.,Ltd. List of Products and Services

Our company has refined the synthesis technology of water-dispersible polymer microparticles known as "core-corona type microparticles" and is focusing on their application in the battery field. "Elevain" can be used as a binder for both the anode and cathode. It offers high design flexibility and can be used in the same way as SBR. Additionally, electrodes using core-corona type polymer microparticles as a binder demonstrated a higher capacity retention rate compared to electrodes using conventional binders. 【Features】 ■ High design flexibility ■ Usable as a binder for both anode and cathode ■ Can be used in the same way as SBR *For more details, please refer to the PDF document or feel free to contact us.

Core-corona type particles have a structure in which hydrophilic units are arranged radially from a core part made up of hydrophobic units. There are grades with corona parts of different ionicities, and they are stabilized in dispersion in water by the hydrophilic units on the particle surface. When core-corona type polymer microparticles are used as a binder for the anode of lithium-ion secondary batteries, they show a higher capacity retention rate and better rate characteristics compared to anodes using conventional binders. 【Features of Core-Corona Type Binders】 - Strong adhesion to the active material surface due to the functional group effects of the corona chains - Low electrode resistance - Does not swell in electrolyte - Enables the production of batteries capable of high-speed charge and discharge For more details, please contact us or download the catalog.

<AN-145A> Our company has refined the synthesis technology of water-dispersible polymer microparticles known as "core-corona type microparticles," focusing on their application in the battery field. In response to requests to "minimize the use of binders to reduce electrode resistance and improve charge-discharge characteristics," we have newly developed "AN-145A," which can further enhance the peel strength of electrodes. The newly developed product has shown approximately 1.7 times the peel strength improvement compared to our conventional product "AN-136K," and about three times compared to commercially available SBR, by optimizing polymer design. SEM images also show that binder particles are uniformly dispersed on the surface of the active material, which is expected to contribute to reducing electrode resistance. It is a water-based binder that can be used in the same way as SBR.