Sheng DING, Kai NING, Binxia YUAN, Weiguo PAN, Shibin YIN, Jianfeng LIU. Durability of Fe-N/C Catalysts with Different Nanostructures for Electrochemical Oxygen Reduction in Alkaline Solution [J]. Journal of Inorganic Materials, 2020, 35(8): 953
- Journal of Inorganic Materials
- Vol. 35, Issue 8, 953 (2020)
1. SEM images of (a) FeNC-DCDA and (b) FeNC-MM; HRTEM images of (c) FeNC-DCDA and (d) FeNC-MM with insets showing corresponding FFT patterns; TEM images of (e) FeNC-DCDA and (f) FeNC-MM with insets showing corresponding SAED images
2. XRD patterns (a), XPS wide scan (b), XPS C1s spectra (c), XPS N1s spectra (d) for FeNC-DCDA and FeNC-MM
3. LSV curves (a), CV curves (b), H2O2 yield (c) and electron transfer number (d) for Pt/C, FeNC-DCDA, FeNC-MM and KB in O2-saturated 0.1 mol·L-1 KOH at 1600 r·min-1
4. CV curves in N2-saturated 0.1 mol·L-1 KOH and LSV curves in O2-saturated 0.1 mol·L-1 KOH of the catalysts for 30000 load potential cycles(a-b) Pt/C; (c-d) FeNC-MM; (e-f) FeNC-DCDA
S1. HRTEM images of FeNC-DCDA
S2. LSV curves of as-prepared and acid-leached FeNC-DCDA measured in O2-saturated 0.1 mol·L-1 KOH (a) and LSV curves of SCN- poisoned FeNC-DCDA measured in O2-saturated 0.1 mol·L-1 KOH (1600 r·min-1, 10 mV s-1) (b)
S3. Comparison of maximum current densities of catalysts before and after the durability tests
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Table 1.
Elemental compositions of Fe-N/C catalysts synthesized with different nitrogen sources obtained from XPS analysis
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Table 2.
Nitrogen contents and deconvoluted N 1s peak positions in Fe-N/C catalysts from XPS data
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