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Temperature Dependence of Open Circuit and Decomposition Potentials

16 TEMPERATURE DEPENDENCE OF OPEN CIRCUIT AND DECOMPOSITION POTENTIALS [Pg.99]

Note that the temperature dependence of the standard OCP and DP is very important for estimating the efficiency of the electrochemical systans vs. efficiency of a heat engine. For example, the theoretical (thermodynamic) efficiency of Hj/Oj fuel cell decreases when temperature increases, and the theoretical efficiency of C/O2 fuel cell does not significantly change over a wide temperature range. In contrast, the thermodynamic efficiency of a heat engine always increases when temperature increases. The efficiency of fuel and electrolytic cells will be considered later in Chapter 8. [Pg.99]

FIGURE 4.3 Temperature dependence of the standard OCP for Hj/Oj, C/Oj, and H2/CI2 fuel (galvanic) cells. The calcnlations were carried out using the data from [Chapter 10, Table 10.4]. [Pg.99]




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And decomposition

Decomposition temperature

Decomposition, dependence

Open temperature dependence

Open-circuit

Open-circuit potential

Potential decomposition

Potential dependence

Potential temperature dependence

Temperature of decomposition

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