The author of 《SEI grown on MCMB-electrode with fluoroethylene carbonate and vinylene carbonate additives as probed by in situ DRIFTS》 were Yohannes, Yonas Beyene; Lin, Shawn D.; Wu, Nae-Lih; Hwang, Bing-Joe. And the article was published in Journal of the Electrochemical Society in 2019. Formula: C3H2O3 The author mentioned the following in the article:
The formation of solid electrolyte interphase (SEI) on electrodes of Lithium ion batteries (LiBs) is known to influence the electrochem. performance of LiBs. In this work, the effect of fluoroethylene carbonate (FEC) and vinylene carbonate (VC) on the SEI formation on mesocarbon microbeads (MCMB) anode is examined by in situ DRIFTS (diffuse reflectance IR Fourier-transformed spectroscopy). Formation of SEI species on MCMB starts in the first lithiation cycle with an onset potential corresponding to the electrochem. reduction potential of the additive. However, both VC and FEC result in continuous SEI formation in subsequent cycles with no onset potential. Similar SEI species are found in the first lithiation cycle and in the subsequent cycles. This suggests the presence of an electrochem. initiation of SEI species formation with a subsequent propagation, similar with what we found previously over Si-based anode. The contribution of the observed SEI species for the improved electrochem. impedances through cycling and its implications are discussed. The experimental part of the paper was very detailed, including the reaction process of Vinylene carbonate(cas: 872-36-6Formula: C3H2O3)
Vinylene carbonate(cas: 872-36-6) belongs to esters. Alkyl carbonates find applications as solvents for lithium ion battery electrolytes and the use of high quality battery grade electrolytes having extremely low water (<10 ppm) and acid (<10 ppm) contents are critical for achieving high electrochemical performance.Formula: C3H2O3
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics