N-doped ordered mesoporous carbons prepared by a two-step nanocasting strategy as highly active and selective electrocatalysts for the reduction of O2 to H2O2

Sheng, Xia; Daems, Nick; Geboes, Bart; Kurttepeli, Mert; Bals, Sara; Breugelmans, Tom; Hubin, Annick; Vankelecom, Ivo F.J.; Pescarmona, Paolo P.

doi:10.1016/j.apcatb.2015.03.049

Cited by 128 publications

(109 citation statements)

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“…MCs doped with nitrogen or sulfur heteroatoms have shown to catalyze the oxygen reduction reaction (ORR) [17][18][19][20] so that, they are promoted as metal-free and cost-effective electrocatalysts. Furthermore, it was found, that depending on the type of functional groups [21], doped carbon materials can be selective towards the 2e À pathway leading to H 2 O 2 [22] or the 4e À pathway, leading directly to H 2 O [23].…”

Section: Introductionmentioning

confidence: 99%

Chemical and Electrochemical Stability of Nitrogen and Sulphur Doped Mesoporous Carbons

Perazzolo

Grądzka

Durante

et al. 2016

Electrochimica Acta

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Section: Introductionmentioning

confidence: 99%

Chemical and Electrochemical Stability of Nitrogen and Sulphur Doped Mesoporous Carbons

Perazzolo

Grądzka

Durante

et al. 2016

Electrochimica Acta

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“…Sheng et al [84] recently reported a highly active N-OMC electrocatalyst which exhibited 0.853 V vs. RHE half-wave potential ( Figure 6). Furthermore, it presented very good stability, as after 5 h operation at −0.4 V vs. Ag/AgCl, its relative current density decreased only by 10% (Figure 7).…”

Section: Dual Hetero-atom Doped Electrocatalystsmentioning

confidence: 99%

“…The well-defined ordered mesoporous framework consisting of interconnected N-doped carbon rods with uniform size was the reason for the high ORR activity. [85], [86], [84], [87], [88], [89], [90], [91], [92]). [85], [86], [84], [87], [88], [89], [90], [91], [92] Figure 7.…”

Section: Dual Hetero-atom Doped Electrocatalystsmentioning

confidence: 99%

“…[85], [86], [84], [87], [88], [89], [90], [91], [92]). [85], [86], [84], [87], [88], [89], [90], [91], [92] Figure 7. Long-term stability curves for modified with alternative precursor and mono or dual-doped electrocatalysts: (1) NCNT-900 (N-doped carbon nanotubes) (at −0.4 V vs SCE) [40]; (2) S-P-N-doped graphitized carbon-1000 (at −0.3 V vs SCE) [78]; (3) NOMC (N-doped ordered mesoporous) (at −0.3 V vs Ag/AgCl) [84]; (4) P(2 at.…”

Section: Dual Hetero-atom Doped Electrocatalystsmentioning

confidence: 99%

“…Wu et al [85] prepared phosphorus-doped carbon hollow spheres (P(2 at.%)-CHS) electrocatalysts, which exhibited more positive than Pt's half-wave potential, 0.883 V vs. RHE ( Figure Figure 7. Long-term stability curves for modified with alternative precursor and mono or dual-doped electrocatalysts: (1) NCNT-900 (N-doped carbon nanotubes) (at −0.4 V vs. SCE) [40]; (2) S-P-N-doped graphitized carbon-1000 (at −0.3 V vs. SCE) [78]; (3) NOMC (N-doped ordered mesoporous) (at −0.3 V vs. Ag/AgCl) [84]; (4) P(2 at. %)-CHS (phosphorus-doped hollow spheres) (at 0.8 V vs. RHE) [85]; (5) shell core structural boron and nitrogen co-doped graphitic carbon/nanodiamond (BN-C/ND) [87]; (6) Fe-N/C-800 (at −0.3 V vs. Ag/AgCl) [88]; (7) SiN-CNTs (at −0.3 V vs. Ag/AgCl) [90]; and (8) S-doped/CNTs-900 (at −0.3 V vs. Ag/AgCl) [93].…”

Section: Dual Hetero-atom Doped Electrocatalystsmentioning

confidence: 99%

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Non-Precious Electrocatalysts for Oxygen Reduction Reaction in Alkaline Media: Latest Achievements on Novel Carbon Materials

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Low temperature fuel cells (LTFCs) are considered as clean energy conversion systems and expected to help address our society energy and environmental problems. Up-to-date, oxygen reduction reaction (ORR) is one of the main hindering factors for the commercialization of LTFCs, because of its slow kinetics and high overpotential, causing major voltage loss and short-term stability. To provide enhanced activity and minimize loss, precious metal catalysts (containing expensive and scarcely available platinum) are used in abundance as cathode materials. Moreover, research is devoted to reduce the cost associated with Pt based cathode catalysts, by identifying and developing Pt-free alternatives. However, so far none of them has provided acceptable performance and durability with respect to Pt electrocatalysts. By adopting new preparation strategies and by enhancing and exploiting synergetic and multifunctional effects, some elements such as transition metals supported on highly porous carbons have exhibited reasonable electrocatalytic activity. This review mainly focuses on the very recent progress of novel carbon based materials for ORR, including: (i) development of three-dimensional structures; (ii) synthesis of novel hybrid (metal oxide-nitrogen-carbon) electrocatalysts; (iii) use of alternative raw precursors characterized from three-dimensional structure; and (iv) the co-doping methods adoption for novel metal-nitrogen-doped-carbon electrocatalysts. Among the examined materials, reduced graphene oxide-based hybrid electrocatalysts exhibit both excellent activity and long term stability.

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Carbon‐Based Electrocatalysts for Efficient Hydrogen Peroxide Production

et al. 2021

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epoxidation agent, its demand in the semiconductor industry has rapidly increased. Global H 2 O 2 production reached 5.5 million metric tons in 2015 and is expected to grow further, to 6.5 million metric tons by 2022. [5] The substantial demand for H 2 O 2 resulting from global public health safety challenges has also made H 2 O 2 one of the most vitally important products worldwide. [6][7][8][9][10] In traditional industries H 2 O 2 is predominantly produced via the indirect energy-intensive anthraquinone process. Riedl et al. first proposed this method, employing expensive Pd catalysts, to continuously loop the redox of H 2 and O 2 of 2-alkyl anthraquinone. [11] However, the process suffers from serious challenges. The simultaneous utilization of hydrogen and oxygen causes safety hazards during gas transportation and storage, [12] and additional distillation purification and separation steps are needed to ensure that the H 2 O 2 concentration reaches 70 wt%, to reduce transportation costs. [13] As an alternative method to avoid those problems, H 2 and O 2 can be used to directly produce H 2 O 2 in a small-scale catalytic process. [14][15][16] However, the large concentrations of H 2 and O 2 co-existing in the chamber can lead to a flammable and explosive environment. For this reason, they are typically diluted with N 2 or CO 2 . That process limits H 2 O 2 production, and further increases production costs, which makes it unsuitable for large-scale commercial Hydrogen peroxide (H 2 O 2 ) is an environment-friendly and efficient oxidant with a wide range of applications in different industries. Recently, the production of hydrogen peroxide through direct electrosynthesis has attracted widespread research attention, and has emerged as the most promising method to replace the traditional energy-intensive multi-step anthraquinone process. In ongoing efforts to achieve highly efficient large-scale electrosynthesis of H 2 O 2 , carbon-based materials have been developed as 2e − oxygen reduction reaction catalysts, with the benefits of low cost, abundant availability, and optimal performance. This review comprehensively introduces the strategies for optimizing carbon-based materials toward H 2 O 2 production, and the latest advances in carbon-based hybrid catalysts. The active sites of the carbonbased materials and the influence of coordination heteroatom doping on the selectivity of H 2 O 2 are extensively analyzed. In particular, the appropriate design of functional groups and understanding the effect of the electrolyte pH are expected to further improve the selective efficiency of producing H 2 O 2 via the oxygen reduction reaction. Methods for improving catalytic activity by interface engineering and reaction kinetics are summarized. Finally, the challenges carbon-based catalysts face before they can be employed for commercial-scale H 2 O 2 production are identified, and prospects for designing novel electrochemical reactors are proposed.The ORCID identification number(s) for the author(s) of this article can be f...

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N-doped ordered mesoporous carbons prepared by a two-step nanocasting strategy as highly active and selective electrocatalysts for the reduction of O2 to H2O2

Cited by 128 publications

References 50 publications

Chemical and Electrochemical Stability of Nitrogen and Sulphur Doped Mesoporous Carbons

Chemical and Electrochemical Stability of Nitrogen and Sulphur Doped Mesoporous Carbons

Non-Precious Electrocatalysts for Oxygen Reduction Reaction in Alkaline Media: Latest Achievements on Novel Carbon Materials

Carbon‐Based Electrocatalysts for Efficient Hydrogen Peroxide Production

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