Thermodynamic Discrimination between Energy Sources for Chemical Reactions
| Autor: | Zachary J. Schiffer, Karthish Manthiram, Aditya M. Limaye |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Work (thermodynamics)
Materials science Basis (linear algebra) Thermodynamics 02 engineering and technology Function (mathematics) 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Chemical reaction 0104 chemical sciences General Energy Chemical thermodynamics Chemical equilibrium 0210 nano-technology Energy source Equilibrium constant Energy (signal processing) |
| Popis: | Summary Chemical transformations traverse large energy differences, yet the comparison of energy sources to drive a reaction is often done on a case-by-case basis; there is no fundamentally driven, universal framework with which to analyze and compare driving forces for chemical reactions. In this work, we present a reaction-independent expression for the equilibrium constant as a function of temperature, pressure, and voltage. With a specific set of axes, all reactions are represented by a single ( x , y ) point, and a quantitative divide between electrochemically and thermochemically driven reactions is visually evident. Additionally, we show that our expression has a strong physical basis in work and energy fluxes to the system, although specific data about operating conditions are necessary to provide a quantitative energy analysis. Overall, this universal equation and facile visualization of chemical reactions provides a consistent thermodynamic framework for comparing electrochemical versus thermochemical energy sources without knowledge of detailed process parameters. |
| Databáze: | OpenAIRE |
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