Mideum Kim

Electrolyte‐Driven Suppression of Oxygen Dimerization and Oxygen Evolution in High‐Voltage Li‐Ion Batteries

Jeongin Lee, Daehyun Kim, Hosik Lee, Do Sol Cheong et autres

Abstract High‐voltage operation of Ni‐rich layered cathodes in lithium‐ion batteries (LIBs) induces oxygen redox reactions, leading to singlet oxygen evolution, interfacial degradation, and electrolyte decomposition. While cathode engineering has been extensively explored to mitigate these challenges, electrolyte‐based strategies for directly regulating oxygen …

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Metal-ion-crosstalk-suppressing gel polymer electrolytes for high-voltage Li-ion batteries

Jihong Jeong, Daehyun Kim, Mideum Kim, Hosik Lee et autres

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Fire-Inhibiting Nonflammable Gel Polymer Electrolyte for Lithium-Ion Batteries

Jihong Jeong, Mideum Kim, Hyeju Shin, Hosik Lee et autres

Herein, we present a gel polymer electrolyte (GPE) improving nonflammability of lithium-ion batteries (LIBs) by blocking radical-initiated chain reactions which cause thermal runaway and finally fire issues. The polymer that makes up the nonflammable GPE was (1) soluble in carbonate electrolytes, (2) …

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