Choi, Woonghee; Kang, Yongku; Kim, In-Jung; Seong, Byeong-Gi; Yu, Woong-Ryeol; Kim, Dong Wook published the artcile< Stable Cycling of a 4 V Class Lithium Polymer Battery Enabled by In Situ Cross-Linked Ethylene Oxide/Propylene Oxide Copolymer Electrolytes with Controlled Molecular Structures>, Formula: C19H34O2, the main research area is stable cycling lithium polymer battery ethylene propylene oxide electrolyte; 4 V class lithium polymer batteries; electrochemical stability; ethylene oxide/propylene oxide copolymer; in situ cross-linking; solid polymer electrolytes.
Com. lithium-ion batteries are vulnerable to fire accidents, mainly due to volatile and flammable liquid electrolytes. Although solid polymer electrolytes (SPEs) are considered promising alternatives with antiflammability and processability for roll-to-roll mass production, several requirements have not yet been fulfilled for a viable lithium polymer battery. Such requirements include ionic conductivity, electrochem. stability, and interfacial resistance. In this work, the ionic conductivity of the SPEs is optimized by controlling the mol. weight and structural morphol. of the plasticizers as well as introducing propylene oxide (PO) groups. Electrochem. stability is also enhanced using ethylene oxide (EO)/PO copolymer electrolytes, making the SPEs compatible with high-Ni LiNixCoyMn1-x-yO2 cathodes. The in situ crosslinking method, in which a liquid precursor first wets the electrode and is then solidified by a subsequent thermal treatment, enables the SPEs to soak into the 60μm thick electrode with a high loading d. of more than 8 mg cm-2. Thus, interfacial resistance between the SPE and the electrode is minimized. By using the in situ cross-linked EO/PO copolymer electrolytes, we successfully demonstrate a 4 V class lithium polymer battery, which performs stable cycling with a marginal capacity fading even over 100 cycles.
ACS Applied Materials & Interfaces published new progress about Battery capacity. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Formula: C19H34O2.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics