《Irreversible dilation of graphite composite anodes influenced by vinylene carbonate》 was published in Journal of Power Sources in 2020. These research results belong to Ivanov, Svetlozar; Sauerteig, Daniel; Dimitrova, Anna; Krischok, Stefan; Bund, Andreas. Recommanded Product: 872-36-6 The article mentions the following:
The volumetric expansion of graphite composite electrodes for Li ion battery is studied by electrochem. dilatometry in electrolytes with different concentration of vinylene carbonate (VC). While the reversible dilation of the anode coatings is not influenced by the VC concentration the irreversible part displays a strong dependence. With the increase of VC amount in the electrolyte the irreversible dilation decreases significantly, showing that the addition of VC has a pos. effect on the mech. performance of the battery. The observed behavior is associated with differences in the decomposition mechanism of the electrolyte components and their reaction kinetics, influenced by the presence of VC. In contrast to the VC containing electrolyte, the passivation layer formed on the anode in the absence of VC cannot effectively terminate the electroactivity of the graphite surface and the electron charge transfer. This leads to a continuous incorporation of decomposition products in the composite layer during the subsequent cycles and related to this addnl. irreversible volume expansion. The anal. performed by combined application of dilatometric, impedance and XPS techniques reveals the pos. role of VC for improving the electrochem.-mech. properties of the graphite porous anode.Vinylene carbonate(cas: 872-36-6Recommanded Product: 872-36-6) was used in this study.
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.Recommanded Product: 872-36-6
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics