Three-dimensional iron, nitrogen-doped carbon foams as efficient electrocatalysts for oxygen reduction reaction in alkaline solution

Ma, Yanjiao; Wang, Hui; Feng, Hongmei; Ji, Shan; Mao, Xuefeng; Wang, Rongfang

doi:10.1016/j.electacta.2014.07.130

Cited by 29 publications

(18 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…designed a high‐efficiency ORR catalyst based on N‐doped porous 3 D graphene foams using a hard templating approach, which exhibited remarkably enhanced ORR activity and long‐term catalytic stability in both basic and acidic solutions . Besides the single doping of heteroatoms, the co‐doping of two or more selected heteroatoms (such as N ‐S, N ‐P, N ‐Fe, N ‐B, N ‐Fe‐S) have also been widely researched, in which the co‐doping of multiple atoms into carbon foams can further enhance their ORR activities owing to the synergistic effects between the heteroatoms by introducing larger asymmetrical spin and charge density in contrast to single doping …”

Section: Direct Methanol Fuel Cellsmentioning

confidence: 99%

Design and Application of Foams for Electrocatalysis

et al. 2017

View full text Add to dashboard Cite

Developing low cost and efficient anode and cathode materials toward electrocatalysis are regarded as one of the most desirable yet challenging research directions, which are intimately related to the pressing energy, environmental and human health issues. Currently, 3 D foam (such as Ni foam, Cu foam, and graphene foam) based heterogeneous catalysts have been intensively explored for actively catalyzing the electrode reactions. Their inherent characteristics of stereo‐network structure, high specific area and large pore volume not only provide better mass transport of reactants to electrode surfaces, but also pave 3 D electron transport pathways. Herein, recent significant progress and rational design of foam‐based electrocatalysts are reviewed. In addition, some insights into current challenges and future directions of foams for efficient electrocatalysis are proposed and discussed.

show abstract

Section: Direct Methanol Fuel Cellsmentioning

confidence: 99%

Design and Application of Foams for Electrocatalysis

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The SEM images of the catalysts in Fig. 16,27,55,56 The percentages of each kind of nitrogen species can be calculated from the corresponding peak areas before and after the LD test ( Table 2). The acid-treatment does not affect the particle size and the porosity of the catalyst.…”

Section: Surface Characterizationmentioning

confidence: 99%

A high-performance Fe and nitrogen doped catalyst derived from diazoniapentaphene salt and phenolic resin mixture for oxygen reduction reaction

Muthukrishnan

Nabae

Chang

et al. 2015

Catal. Sci. Technol.

View full text Add to dashboard Cite

A high-performance ORR catalyst has been synthesised by pyrolysis of quaternary nitrogen-containing 4a,8a-diazoniapentaphene dibromide (DAP), phenolic resin and FeBr 2 mixture. The catalyst (Fe/DAP) was characterized by XPS, SEM and TEM analysis. The ORR activity was studied using rotating ring-disk electrode voltammetry (RRDE) and the onset potential of ORR was found to be 0.95 V vs. RHE in 0.5 M H 2 SO 4 solution, which is very close to that of the state-of-the-art Pt/C catalyst. The stability of the catalyst was studied using LD and SSD tests and found to be highly stable even after 11 110 potential-steps in the LD test. The kinetic and mechanistic analyses of the ORR on the catalyst indicate that the ORR, as a whole, follows a 4-electron (parallel) pathway. The relative changes in the nitrogen content after the durability test was estimated using N 1s XPS spectra which may be associated with the activity loss after the durability test. The loss of ORR activity was observed after the acid washing of the catalyst which suggests the role of Fe in the direct 4-electron reduction of O 2 .

show abstract

“…3 [23]. Both XC-72 and Fe-N-C exhibit the representative type II nitrogen isotherm curve, which is related to the micropore structure [18].…”

Section: Resultsmentioning

confidence: 96%

The effect of the internal magnetism of ferromagnetic catalysts on their catalytic activity toward oxygen reduction reaction under an external magnetic field

Wang

Yang

et al. 2016

Ionics

Self Cite

View full text Add to dashboard Cite

In the oxygen reduction reaction (ORR), the oxygen transport rate plays an important role in the ORR on the cathode. An approach by applying magnetic fields on the cathode can effectively improve the oxygen transport. However, no work reports the effect of the magnetism of ferromagnetic catalysts on ORR under an external magnetic field. Herein, the catalytic performances of the ferromagnetic catalysts including Fe 3 O 4 , γ-Fe 2 O 3 , and Fe-N-C for ORR are studied under an external magnetic field. Linear sweep voltammetry (LSV) results indicate that the ORR current on the cathode increases with the strength of the external magnetic field due to the improved oxygen transfer. Meanwhile, the increase of the ORR current on Fe-N-C is larger than Fe 3 O 4 and γ-Fe 2 O 3 since some internal tiny magnetic fields generated by the Fe 3 O 4 and γ-Fe 2 O 3 catalysts are different from the magnetic direction of the external magnet. It is also found that the magnetic direction of the external magnet does not have any effect on the oxygen transfer.

show abstract

Three-dimensional iron, nitrogen-doped carbon foams as efficient electrocatalysts for oxygen reduction reaction in alkaline solution

Cited by 29 publications

References 44 publications

Design and Application of Foams for Electrocatalysis

Design and Application of Foams for Electrocatalysis

A high-performance Fe and nitrogen doped catalyst derived from diazoniapentaphene salt and phenolic resin mixture for oxygen reduction reaction

The effect of the internal magnetism of ferromagnetic catalysts on their catalytic activity toward oxygen reduction reaction under an external magnetic field

Contact Info

Product

Resources

About