SECONDARY BATTERY

• Main Authors: SASAKI TSUYOSHI, OKUDA NARUAKI, NAKANO HIROYUKI, YAMAMOTO KUNIMITSU, ITO YUICHI
• Format: Patent
• Language: English; Japanese
• Published: 28.11.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To enhance a volume energy density and a rate characteristic.SOLUTION: A secondary battery comprises at least a positive electrode 100, a negative electrode 200 and a separator 300. The positive electrode 100 and the negative electrode 200 each include at least a current collector 10 and an active material slurry 20. The current collector 10 is porous. The active material slurry 20 is filled in open pores of the current collector 10. The active material slurry 20 contains at least active material particles 21 and an electrolyte solution 22. The active material particles 21 are dispersed in the electrolyte solution 22. The active material slurry 20 exhibits a viscosity of 100 mPa s or more to a shear rate of 1 s. The separator 300 is disposed between the positive electrode 100 and the negative electrode 200.SELECTED DRAWING: Figure 1 【課題】体積エネルギー密度およびレート特性の向上。【解決手段】二次電池は正極１００、負極２００およびセパレータ３００を少なくとも含む。正極１００および負極２００の各々は集電体１０および活物質スラリー２０を少なくとも含む。集電体１０は多孔質である。活物質スラリー２０は集電体１０の開気孔に充填されている。活物質スラリー２０は活物質粒子２１および電解液２２を少なくとも含む。活物質粒子２１は電解液２２中に分散している。活物質スラリー２０は１ｓ-1のせん断速度に対して１００ｍＰａ・ｓ以上の粘度を示す。セパレータ３００は正極１００と負極２００との間に配置されている。【選択図】図１