Ethylene carbonate

Example

Use in Lemonergy

Connect transport with electronic isolation.

This is a reference concept. No executable Lemonergy block has been verified for this term.

Connected concepts

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Carbonate solvent

The organic liquids that dissolve the lithium salt: cyclic ethylene carbonate, which forms a stable SEI, blended with linear carbonates such as DMC or EMC to lower viscosity. All are flammable, which is a root of lithium-ion fire risk.

Dimethyl carbonate

A linear carbonate solvent, thin and volatile, blended with EC to cut viscosity and raise ionic conductivity. Its low boiling point, about 90 °C, is part of why cell electrolytes are flammable.

Ethyl methyl carbonate

A linear carbonate solvent, the most common co-solvent in commercial electrolytes, balancing viscosity, boiling point and low-temperature performance between DMC and DEC.

Propylene carbonate

A cyclic carbonate with a wide liquid range and low freezing point, but one that co-intercalates into graphite and exfoliates it unless a good SEI is formed first. It is used in small amounts, in low-temperature blends and with non-graphite anodes.

Solid–electrolyte interphase

A film of electrolyte reaction products on the negative-electrode particles — graphite, and also silicon or lithium metal. It protects the electrode from further reaction but grows slowly for the whole life of the cell, consuming cyclable lithium.

References & further reading

Technical references

1. Electrolytes and Interphases in Li-Ion Batteries and Beyond

   Kang Xu · Chemical Reviews · 2014

   Technical reference · Electrolyte salts, solvents, additives and electrode interphases.