Solid electrolyte

Example

Use in Lemonergy

Connect transport with electronic isolation.

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

Learn it in Lesson 3B · Solid-state production →

Connected concepts

Related concepts from the knowledge graph. Connections show context, not cause and effect. Hover or focus a linked term for its definition.

Electrolyte

The ion-conducting medium between the electrodes. In a liquid-electrolyte cell it fills the pores of both electrodes and the separator, so it is not a separate structural layer.

Ionic conductivity

How readily an electrolyte carries ions, in siemens per centimetre. Liquid carbonate electrolytes reach about 10 mS/cm at room temperature; the best sulfide solid electrolytes match that, while polymers fall far short unless heated.

Sintering

Heating a powder below its melting point until the particles grow together into a dense solid. Oxide solid electrolytes are sintered at high temperature to give good ionic contact.

Solid-state battery

A cell whose electrolyte is a solid rather than a liquid. It removes the flammable solvent and may allow a lithium-metal anode, but needs intimate solid–solid contact and, for most chemistries, stack pressure to keep it.

Stack pressure

Pressure applied to a cell stack, in production or in use, to keep its layers in contact. Solid-state cells depend on it, because ions can only cross where two solids touch.

Superionic conductor

A solid in which one ion species moves almost as freely as in a liquid, reaching the order of 1 mS/cm or more, while the rest of the lattice stays rigid. α-silver iodide above 147 °C is the classic case; Li₁₀GeP₂S₁₂ reaches about 12 mS/cm at room temperature. Such materials are the basis of solid electrolytes.

References & further reading

Further reading on this topic

These sources provide broader context; they are not presented as citations for every statement in this entry.

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

   Kang Xu · Chemical Reviews · 2014

   Topic background · Electrolyte salts, solvents, additives and electrode interphases.