Disequilibrium · disequilibrium:chemical-potential-difference

Chemical potential difference

A reaction or phase change with negative Gibbs free energy. Fuel plus oxidiser, a charged battery, an unstable phase.

symbol ΔμChemistryenergy form chemicalexergy positivealso: reaction free energy, ΔG, redox potential

Atlas record: 3 claims reference this disequilibrium — 3 established.

Explorerelations · matrix context · routes · sources · cite

3claims74enumerated routes6routes with complete-composition evidence17candidate routes not searched4cited sources

Relations

drives · 3

Chemical potential difference—drives→Galvanic (redox) reactionestablished

a spontaneous redox couple split between two electrodes with an ion-conducting electrolyte between them

E_cell = −ΔG / nF · 1/(nF) [mol/C]

Chemical potential difference—drives→Fuel-cell electro-oxidationestablished

continuous supply of fuel and oxidant to catalysed electrodes separated by a proton- or oxide-conducting electrolyte

Chemical potential difference—drives→Combustionestablished

fuel, oxidiser and an ignition source; flame temperature 1500–2500 K

Matrix context

D = disequilibrium row · C = coupling family column. A cell reads the state of the atlas for that pair.

C.01 Thermoelectric C.02 Thermionic C.03 Thermoacoustic C.04 Pyroelectric C.05 Thermogalvanic C.06 Thermomagnetic C.07 Thermophotovoltaic C.08 Heat engine (thermomechanical)C.09 Caloric (magneto/electro/elasto)C.10 Piezoelectric C.11 Flexoelectric C.12 Triboelectric C.13 Electrostatic (variable capacitance)C.14 Electromagnetic induction C.15 Magnetostrictive C.16 Magnetoelectric C.17 Spin caloritronic C.18 Photovoltaic C.19 Photoelectrochemical C.20 Photothermal C.21 Electrochemical C.22 Osmotic / salinity-gradient C.23 Electrokinetic C.24 Turbomachinery C.25 Magnetohydrodynamic C.26 Radiovoltaic C.27 Nuclear heat C.28 Rectenna C.29 Thermochemical C.30 Biological C.31 Fluctuation / information-driven C.32 Photon momentum C.33 Thermodiffusive C.34 Marangoni C.35 Acoustoelectric C.36 Photodiffusive C.37 Thermo-osmotic C.38 Electrohydrodynamic C.39 Radioluminescent C.40 Thermopolarization

Enumerated routes through this · 74 (showing 24)

Combustion heater (boiler, furnace)2/2 est · demonstrated
Galvanic battery discharge3/3 est · demonstrated
Hydrogen fuel cell3/3 est · demonstrated
Combustion-driven micro-thermophotovoltaic generator7/7 est · demonstrated
Combustion gas-turbine plant7/7 est · demonstrated
Combustion MHD generator7/7 est · demonstrated
Chemical potential difference → Combustion → Hot gas → Thermal emission → Light4/4 est · extends a recorded pathway
Chemical potential difference → Combustion → Temperature gradient → Thermal emission → Light4/4 est · extends a recorded pathway
Chemical potential difference → Combustion → Hot gas → Magnetohydrodynamic generation → Charge carriers → Electrical work4/5 est · extends a recorded pathway
Chemical potential difference → Combustion → Hot gas → Working-fluid expansion (heat-engine cycle) → Mechanical motion → Mechanical work5/5 est · extends a recorded pathway
Chemical potential difference → Combustion → Temperature gradient → Alkali-metal thermal-to-electric conversion → Ionic current → Electrical work3/5 est · extends a recorded pathway
Chemical potential difference → Combustion → Temperature gradient → Ionic thermoelectric effect → Ionic current → Electrical work5/5 est · candidate
Chemical potential difference → Combustion → Temperature gradient → Marangoni effect → Mechanical motion → Mechanical work5/5 est · extends a recorded pathway
Chemical potential difference → Combustion → Temperature gradient → Thermal shape-memory effect → Mechanical motion → Mechanical work5/5 est · extends a recorded pathway
Chemical potential difference → Combustion → Temperature gradient → Thermochemical redox cycle → Chemical fuel (H₂, CO, syngas) → Chemical fuel5/5 est · same energy form
Chemical potential difference → Combustion → Temperature gradient → Thermopolarization effect → Separated surface charge → Electrical work3/5 est · weakly supported
Chemical potential difference → Combustion → Temperature gradient → Thermopolarization effect → Separated surface charge → Electrical work3/5 est · weakly supported
Chemical potential difference → Combustion → Temperature gradient → Seebeck effect → Charge carriers → Electrical work5/5 est · extends a recorded pathway
Chemical potential difference → Combustion → Temperature gradient → Heat conduction → Heat flow → Useful heat5/5 est · extends a recorded pathway
Chemical potential difference → Combustion → Temperature gradient → Thermionic emission → Charge carriers → Electrical work5/5 est · extends a recorded pathway
Chemical potential difference → Combustion → Temperature gradient → Thermogalvanic effect → Ionic current → Electrical work5/5 est · extends a recorded pathway
Chemical potential difference → Combustion → Temperature gradient → Thermally regenerative electrochemical cycle → Ionic current → Electrical work3/5 est · extends a recorded pathway
Chemical potential difference → Combustion → Temperature gradient → Nernst effect → Charge carriers → Electrical work5/5 est · extends a recorded pathway
Chemical potential difference → Combustion → Temperature gradient → Anomalous Nernst effect → Charge carriers → Electrical work5/5 est · extends a recorded pathway

Cited sources · 4

[1]
A. J. Bard, L. R. Faulkner. Electrochemical Methods: Fundamentals and Applications (2nd ed.) (2001)
Wiley · book, no DOI · record
[2]
W. R. Grove. On voltaic series and the combination of gases by platinum (1839)
Philosophical Magazine 14, 127–130 · doi:10.1080/14786443908649684 · crossref ✓ 2026-09-19 · record
[3]
N. A. A. Qasem, G. A. Q. Abdulrahman. A recent comprehensive review of fuel cells: history, types, and applications (2024)
International Journal of Energy Research 2024, 7271748 · doi:10.1155/2024/7271748 · crossref ✓ 2026-09-19 · record
[4]
A. Bejan. Advanced Engineering Thermodynamics (4th ed.) (2016)
Wiley · doi:10.1002/9781119245964 · crossref ✓ 2026-09-19 · record

Cite this entity

Physical Transformation Atlas (2026). entity disequilibrium:chemical-potential-difference: Chemical potential difference. Dataset revision rbfbfcbb70e57 (hash of the canonical data). https://physical-transformation-atlas.wldud5192.workers.dev/e/disequilibrium/chemical-potential-difference

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