Effects of Carbon Nanotubes Acid Treated or Annealed and Manganese Nitrate Thermally Decomposed on Capacitive Characteristics of Electrochemical Capacitors

Table 2

Mn 2p_3/2, Mn 3s, and O 1s of XPS for manganese oxide before and after potential cycling.

	Sample
	Mn 2p3/2	Mn 3s			Band	O 1s
	Eb, eV	Eb(1), eV	Eb(2), eV	Δ𝐸, eV		Eb, eV	Area, %
Before CV	641.4	83.1	88.3	5.2	Mn–O–Mn	529.13	67.58
					Mn–OH	530.49	24.86
					H–O–H	531.85	7.29
10 cycles	641.7	83.4	88.6	5.2	Mn–O–Mn	529.14	47.14
					Mn–OH	530.44	24.19
					H–O–H	531.43	28.67
100 cycles	641.7	83.6	88.4	4.8	Mn–O–Mn	529.13	47.62
					Mn–OH	530.18	16.69
					H–O–H	531.32	30.31
1000 cycles	641.8	83.9	88.8	4.9	Mn–O–Mn	529.42	29.99
					Mn–OH	530.65	20.52
					H–O–H	531.6	49.49