Table 2 Contribution of different entropic terms for δ = 0.03 and temperature of 1500 K

From: Giant onsite electronic entropy enhances the performance of ceria for water splitting

Method

\(\frac{\bf 1}{\bf 2}{\bf S}_{{{\bf{O}}_{\bf 2}}}^{\bf 0}\)

ΔS vib

ΔS conf

\({\bf {\Delta }} {\bf S}_{{\bf{elec}}}^{{\bf{onsite}}}\)

ΔS tot

\({\bf {\Delta }} {\bf S}_{{\bf{exp}}}^{{\bf{tot}}}\)

Ideal

15.2

2.5

10.4

28.1

 

MC

15.2

 

5.9

21.1

26.1

MC + \(\Delta S_{{\rm{elec}}}^{{\rm{onsite}}}\)

15.2

 

5.9

4.26a

25.4

 
  1. The values of ΔS conf are obtained from an ideal solution model and Monte-Carlo (MC) simulations28: the MC calculated S conf already includes vibrational entropy28. Experimental value is taken from ref. 23
  2. aThis value is calculated for T = 1500 K