Concentration cell effect
Two electrodes of the same kind in solutions of different activity develop a potential difference (RT/zF)·ln(a₁/a₂). A concentration gradient becomes a voltage.
Atlas record: 5 claims reference this phenomenon — 5 established.
Explorerelations · matrix context · routes · sources · cite
Relations
- two electrodes of the same kind in solutions of different activity joined by a salt bridge or membrane
- E = (RT/zF)·ln(a₁/a₂) per cell — 59 mV per decade of activity ratio at 25 °C — sets the reversible work per unit charge
Matrix context
D = disequilibrium row · C = coupling family column. A cell reads the state of the atlas for that pair.
Enumerated routes through this · 9
- Concentration cell3/3 est · demonstrated
- Temperature gradient → Soret effect → Concentration gradient → Concentration cell effect → Ionic current → Electrical work5/5 est · extends a recorded pathway
- Chemical potential difference → Combustion → Temperature gradient → Soret effect → Concentration gradient → Concentration cell effect → Ionic current → Electrical work7/7 est · extends a recorded pathway
- Electric potential difference → Peltier effect → Temperature gradient → Soret effect → Concentration gradient → Concentration cell effect → Ionic current → Electrical work7/7 est · same energy form
- Electric potential difference → Ettingshausen effect → Temperature gradient → Soret effect → Concentration gradient → Concentration cell effect → Ionic current → Electrical work7/7 est · same energy form
- Incident radiation flux → Photothermal absorption → Temperature gradient → Soret effect → Concentration gradient → Concentration cell effect → Ionic current → Electrical work7/7 est · extends a recorded pathway
- Radiative imbalance with the sky → Radiative sky cooling → Temperature gradient → Soret effect → Concentration gradient → Concentration cell effect → Ionic current → Electrical work7/7 est · extends a recorded pathway
- Nuclear binding-energy difference → Nuclear fission → Temperature gradient → Soret effect → Concentration gradient → Concentration cell effect → Ionic current → Electrical work7/7 est · extends a recorded pathway
- Nuclear binding-energy difference → Nuclear fusion → Temperature gradient → Soret effect → Concentration gradient → Concentration cell effect → Ionic current → Electrical work5/7 est · extends a recorded pathway
Cited sources · 2
- [1]A. J. Bard, L. R. Faulkner. Electrochemical Methods: Fundamentals and Applications (2nd ed.) (2001)
- [2]B. E. Logan, M. Elimelech. Membrane-based processes for sustainable power generation using water (2012)
Cite this entity
Physical Transformation Atlas (2026). entity phenomenon:concentration-cell-effect: Concentration cell effect. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/phenomenon/concentration-cell-effect
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