Account

Table 1 XPS for the elemental composition analyses of NMCSs and the relative ratios of nitrogen species to the total N 1 s

From: Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors

Samples	C (at.%)	O (at.%)	N (at.%)	N-6^a (398.5 eV)	N-5^b (400.2 eV)	N-Q^c (401.0 eV)	N-X^d (403.2 eV)
NMCSs −500	92.1	5.8	2.1	32.4%	30.4%	19.4%	17.8%
NMCSs −600	92.5	4.9	2.6	26.4%	31.7%	21.1%	20.8%
NMCSs − 700	91.2	7.7	1.2	17.3%	27.2%	30.3%	25.2%
NMCSs −800	92.8	6.3	0.9	10.7%	27.8%	38.5%	23.0%

^apyridinic-N
^bpyrrolic-N
^cquaternary-N
^dpyridine-N-oxides

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