Table 1. The relaxation times τ and the diffusion coefficients D deduced from the dR/dt curves in the oxidation cycle at various temperatures.

	Co2.5+ → Co3+ step		Co3+ → Co3.5+ step
T (°C)	τ (×10−14 s)	D (×10−2 cm2/s)	τ (×10−10 s)	D (×10−6 cm2/s)
240	6.56 ± 1.86	1.64 ± 0.46	-	-
260	2.44 ± 0.51	0.62 ± 0.17	-	-
280	5.49 ± 0.84	1.37 ± 0.24	1.04 ± 0.27	1.45 ± 0.19
300	1.09 ± 0.07	1.39 ± 0.08	18.6 ± 2.3	0.082 ± 0.013
320	4.92 ± 0.69	0.31 ± 0.05	49.5 ± 0.2	0.031 ± 0.000
350	-	-	3.52 ± 0.02	0.430 ± 0.003
400	-	-	(9.25 ± 0.07) × 10−3	163 ± 2