XPS Studies of LSCF Interfaces after Cell Testing

Table 1

Experimental atomic concentrations for the as-received LSCF powder from FCM obtained from XPS measurements on samples with nominal composition of .

	Atomic percent
	La	Sr	Co	Fe	O
Sample 1	12.3%	6.9%	9.4%	11.9%	59.6%
Sample 2	12.1%	6.7%	8.7%	11.7%	60.8%
Average	12.2%	6.8%	9.1%	11.8%	60.2%
Expected	11.4%	7.6%	4.0%	16.0%	60.0%
Error	7.0%	10.5%	126.3%	26.3%	0.3%
	Formula
Average	0.61	0.34	0.45	0.59	3.01
Expected	0.57	0.38	0.20	0.80	3.00