Journalartikel

Jahr der Veröffentlichung: 2023

Seiten: 5662-5670

Zeitschrift: ACS Applied Energy Materials

Bandnummer: 6

Heftnummer: 11

ISSN: 2574-0962

DOI Link: https://doi.org/10.1021/acsaem.2c03892

Verlag: American Chemical Society

Abstract: 
The conventional poly-(vinylidenedifluoride) (PVDF) polymerbackbonein the lithium battery system shows poor compatibility with polyethyleneglycol dimethyl ether (PEGDME) and results in the PVDF matrix separatingfrom the PEGDME. It reacts with the lithium metal anode, forming anuneven passivation layer that causes battery capacity to decay. Here,poly-(ethylene oxide) (PEO)-modified PVDF (mPVDF) was used as a polymermatrix to prepare freestanding quasi-solid-state polymer electrolyteswith a PEGDME plasticizer (mQSPEs) to minimize battery deterioration.The PEO-mPVDF skeleton incorporated with an adequate amount of PEGDMEreaches an ionic conductivity of 10(-3) S cm(-1) and simultaneously exhibits excellent compatibility with the lithiummetal anode. The differential scanning calorimetry and thermogravimetricanalysis show that the mPVDF backbone exhibits strong interactionswith the polymer matrix and PEGDME, which has higher glass transitiontemperature (T (g)) and decomposition temperature(T (d)) compared to the original PVDF backbone.Optical microscopy images show that the PEGDME stays in the mPVDFmatrix without separation. The modified polymer matrix successfullyprevents the degradation of PEGDME at the lithium metal anode, leadingto long-term stability of mQSPEs with lithium metal.

Harvard-Zitierstil: Tsao, C., Wang, C., Trevisanello, E., Richter, F., Kuo, D., Janek, J., et al. (2023) Polyethylene Glycol Dimethyl Ether-Plasticized Poly(vinylidene difluoride)-Based Polymer Electrolytes Inhibit Dendrite Growth and Enable Stable Cycling for Lithium-Metal Batteries, ACS Applied Energy Materials, 6(11), pp. 5662-5670. https://doi.org/10.1021/acsaem.2c03892

APA-Zitierstil: Tsao, C., Wang, C., Trevisanello, E., Richter, F., Kuo, D., Janek, J., Chang, C., Teng, H., & Kuo, P. (2023). Polyethylene Glycol Dimethyl Ether-Plasticized Poly(vinylidene difluoride)-Based Polymer Electrolytes Inhibit Dendrite Growth and Enable Stable Cycling for Lithium-Metal Batteries. ACS Applied Energy Materials. 6(11), 5662-5670. https://doi.org/10.1021/acsaem.2c03892