Table 1.

Elemental analysis (at%) of the Al anode′s surface, as calculated from XPS measurements.

	Al	O	C	S	F	Cl
Charged before	25.2	45.8	25.0	0.4	1.6	1.9
Charged after	34.3	52.8	11.4	n/a	0.8	0.6
Discharged before	21.7	45.5	29.7	0.4	1.3	0.3
Discharged after	33.7	52.4	11.4	n/a	0.6	n/a