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. 2017 Mar 20;231:115–124. doi: 10.1016/j.electacta.2017.02.033

Table 2.

Elemental composition and chemical speciation of catalysts.

C 1 s % O 1 s % N 1 s % Metal % C gr C-N CxOy
Fe-AAPyr 84.8 7.2 7.9 0.25 32.7 13.5 51.3
Co-AAPyr 89.5 8.1 2.3 0.10 50.6 6.4 40.5
Ni-AAPyr 86.3 11.6 2.0 0.19 29.7 17.7 43.3
Mn-AAPyr 82.3 12.5 5.1 0.13 25.0 16.1 51.6
N pyridinic Nx-M N pyrrolic N gr Metal M-Nx MOx
Fe-AAPyr 35.9 19.6 25.3 9.5 0.0 28.0 72.0
Co-AAPyr 27.3 12.9 30.3 14.7 11.4 58.4 30.2
Ni-AAPyr 34.7 13.2 28.3 9.7 0.0 16.8 83.2
Mn-AAPyr 35.8 31.5 17.1 6.4 17.8 34.4 47.8