Table 2.

Accelerate the aging process types and binding energy positions of C₁s peaks.

Element composition	Binding type	Binding energy/eV	Time/h
			0h	288h	576h
C1/%	C-C, C-H	284.05	73.01	52.07	47.60
C2/%	C-O	285.75	20.70	36.01	40.16
C3/%	O-C-O, C=O	287.45	6.29	11.94	12.24
C1/C2	⎯⎯	⎯⎯	3.53	1.45	1.19
Cox/Cunox	⎯⎯	⎯⎯	0.37	0.92	1.10
O1/%	O-C=O	532.25	97.90	96.80	98.08
O2/%	C-O-, C=O, C-O-C, O-C=O	530.25	2.10	3.20	1.92
O/C	⎯⎯	⎯⎯	0.23	0.40	0.43