Battery knowledge · Electrochemistry fundamentals
Transference number
The fraction of the ionic current carried by the lithium ion rather than by the anion, about 0.3–0.4 in liquid electrolytes. A low value lets concentration gradients build up under load; single-ion solid electrolytes have a value near 1. [1]
- Abbreviation
- t₊
- Unit
- —
Example
Electrochemistry fundamentals: an example situation
A circuit can predict terminal voltage while leaving electrode potentials and reaction kinetics unresolved.
Read Transference number alongside Concentration polarization in this context. Voltage loss that arises when reactant is consumed faster than diffusion can replace it, so the concentration at the surface differs from the bulk. It dominates at high current and low temperature and recovers slowly when current stops.
Use in Lemonergy
Connect reaction sites and transport paths.
This is a reference concept. No executable Lemonergy block has been verified for this term.
References & further reading
Technical references
- Quantities, Units and Symbols in Physical Chemistry, 3rd edition, 2nd printing
IUPAC · 2011
Technical reference · Physical-chemistry notation, thermodynamics, electrochemistry and transport quantities.