Chai, Yinguang; Jia, Wenshan; Hu, Zhiqiu; Jin, Song; Jin, Hongchang; Ju, Huanxin; Yan, Xingbin; Ji, Hengxing; Wan, Li-Jun published the artcile< Monitoring the mechanical properties of the solid electrolyte interphase (SEI) using electrochemical quartz crystal microbalance with dissipation>, HPLC of Formula: 112-63-0, the main research area is copper quartz crystal microbalance electrochem solid electrolyte mech property.
Stable solid electrolyte interphase (SEI) has been well established to be critical for the reversible operation of Li (ion) batteries, yet our understanding of its mech. properties currently remains incomplete. Here, we used an electrochem. quartz crystal microbalance combined with dissipation monitoring (EQCM-D) to investigate SEI formation. By quant. estimating in-situ, the change in mass, shear modulus, and viscosity of the SEI, we show that the SEI formation in propylene carbonate (PC)- and ethylene carbonate/diethyl carbonate (EC/DEC)-based electrolytes involves the growth of a rigid layer followed by a viscoelastic layer, whereas a distinct “”one-layer”” rigid model is applicable to the SEI formulated in tetraethylene glycol di-Me ether (TEGDME)-based electrolyte. With the continuous formation of the SEI, its shear modulus decreases accompanied by an increase in viscosity. In TEGDME, the lightest/thinnest SEI (mass lower than in PC by a factor of nine) yet having the greatest stiffness (more than five times that in PC) is obtained. We attribute this behavior to differences in the chem. composition of the SEIs, which have been revealed by tracking the mass-change-per-mole-of-electron-transferred using EQCM-D and further confirmed by XPS.
Chinese Chemical Letters published new progress about Dielectric dissipation factor. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, HPLC of Formula: 112-63-0.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics