Activating bimetallic ZIF-derived polymers using facile steam-etching for the ORR

Abstract

An α-Fe2O3/Fe@NPC catalyst for the ORR is synthesized via a thermal shock reaction with precursors 1 and 2.

Improving the performance of biomass-based electrocatalysts by means of hot pressing

“…4a and d) are positioned at potentials in the order HPBE 4 Pt/C 4 BE, an indication of the order of their corresponding ORR performance. 39,40 Their linear sweep voltammograms (Fig. 4b and e) corroborate this order.…”

Fe&Fe2O3 Dual-Decorated on N-Doped Porous Carbon for Oxygen Reduction Reaction

“…As compared in Table S2, the Fe&Fe 2 O 3 /NC also seems to have a better ORR catalytic activity than other Fe 2 O 3 -based samples, such as Fe 2 O 3 -PPy-C, Fe 2 O 3 /N-CNT@srGO, Fe 3 O 4 /Fe 2 O 3 /Fe-CNSs-N and γ-Fe 2 O 3 @NPC. [24][25][26]31 In Fig. 5c, the ring current densities (J r ) increase along with the disk potential decreases.…”

“…4b. The main peaks appearing at 724.2 eV and 711.2 eV correspond to the Fe 2p 1/2 and Fe 2p 3/2 of Fe 3+ ions, 26,31 while the peaks observed at 732.2 eV and 715.6 eV are attributed to the Fe 2 O 3 2p 3/2 and Fe 2 O 3 2p 1/2 satellite peaks. 22,31 There is also Fe 0 at 719.6 eV in Fe&Fe 2 O 3 /NC.…”

“…1). However, for Fe&Fe 2 O 3 /NC, there is also an obvious peak at 44.7°a nd a weak peak at 65.0°for the (110) and (200) planes of Fe (JCPDS No.06-0696), 22,[24][25][26] respectively. This means that in the second pyrolysis process (Fig.…”

Coal-Derived N-Doped Porous Carbon Accompanied with Fe2O3 for Oxygen Reduction Reaction

“…34 Li and his co-workers synthesized a Fe 2 O 3 -doped mesoporous carbon nanomaterials with the E p of 785 mV and E 1/2 of 777 mV. 35 Y. Wu and his co-workers synthesized Fe 2 O 3 @NPC for the ORR with the E 1/2 at 0.59 V. 36 A Fe 3 O 4 /Fe 2 O 3 /Fe-CNSs-N with a definite peak located at 0.802 V was also reported. 33 In this work, we also compare the ORR catalytic activity of AC-4 with the 20 wt% Pt/C.…”