Thermal Runaway of Nonflammable Localized High-Concentration Electrolytes for Practical LiNi_0.8 Mn_0.1 Co_0.1 O₂ |Graphite-SiO Pouch Cells.

ABSTRACT: With continuous improvement of batteries in energy density, enhancing their safety is becoming increasingly urgent. Herein, practical high energy density LiNi_0.8 Mn_0.1 Co_0.1 O₂ |graphite-SiO pouch cell with nonflammable localized high concentration electrolyte (LHCE) is proposed that presents unique self-discharge characteristic before thermal runaway (TR), thus effectively reducing safety hazards. Compared with the reference electrolyte, pouch cell with nonflammable LHCE can increase self-generated heat temperature by 4.4 °C, increase TR triggering temperature by 47.3 °C, decrease the TR highest temperature by 71.8 °C, and extend the time from self-generated heat to triggering TR by ≈8 h. In addition, the cell with nonflammable LHCE presents sup

SUBMITTER: Wu Y 

PROVIDER: S-EPMC9661853 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature