transference number: meaning, definition, pronunciation and examples
Very LowTechnical/Scientific
Quick answer
What does “transference number” mean?
In electrochemistry and battery science, the fraction of ionic current carried by a specific ion in an electrolyte solution.
Audio
Pronunciation
Definition
Meaning and Definition
In electrochemistry and battery science, the fraction of ionic current carried by a specific ion in an electrolyte solution.
A dimensionless number (often denoted as t⁺ or t⁻) ranging from 0 to 1 that quantifies the contribution of a particular ionic species to the total ionic conductivity of an electrolyte. It is a key parameter for analyzing and predicting the performance of electrochemical cells, including batteries, fuel cells, and electrolyzers.
Dialectal Variation
British vs American Usage
Differences
No significant differences in usage between British and American English. The term is standardised in international scientific literature.
Connotations
Purely technical and neutral.
Frequency
Equally rare in both variants, confined to technical publications.
Grammar
How to Use “transference number” in a Sentence
The transference number [of + SPECIFIC ION] is [ADJ/ VALUE]A high/low transference number for [ION]Vocabulary
Collocations
Examples
Examples of “transference number” in a Sentence
verb
British English
- The research team aims to transference the concept to solid-state systems.
Usage
Meaning in Context
Business
Unused.
Academic
Used in research papers, theses, and textbooks on electrochemistry, battery technology, and ionic transport phenomena.
Everyday
Never used.
Technical
The primary context. Used by electrochemists, battery engineers, and materials scientists to describe and model electrolyte behaviour.
Vocabulary
Synonyms of “transference number”
Neutral
Weak
Watch out
Common Mistakes When Using “transference number”
- Confusing it with 'diffusion coefficient' or 'ionic conductivity'. The transference number is a fraction, not a rate or a measure of absolute speed.
- Using it without specifying the ion (e.g., 'The transference number is low' is ambiguous).
- Attempting to use it in non-scientific contexts.
FAQ
Frequently Asked Questions
No. By definition, it is a fraction of the total ionic current, so it must be between 0 and 1.
A high lithium transference number minimises concentration gradients within the battery during operation, which reduces voltage loss and improves power capability and longevity.
Ionic conductivity measures how well a solution conducts electricity overall. The transference number breaks down that total conductivity, showing how much of it is due to a specific ion.
Extremely rarely. Its primary and almost exclusive use is in the context of ionic transport in electrochemical systems.
In electrochemistry and battery science, the fraction of ionic current carried by a specific ion in an electrolyte solution.
Transference number is usually technical/scientific in register.
Transference number: in British English it is pronounced /ˌtrænsˈfɜːrəns ˌnʌmbə/, and in American English it is pronounced /ˌtrænsˈfɜːrəns ˌnʌmbər/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think of a crowded train line (the electrolyte). The 'transference number' for commuters from Oxford Street is the fraction of the total passenger flow made up specifically by those people.
Conceptual Metaphor
A SHARE OF THE FLOW. The ion's transference number is its 'share' or 'percentage ownership' of the total ionic current flowing through the solution.
Practice
Quiz
What does a transference number of 0.8 for Li⁺ in an electrolyte indicate?