Balancing the Micro‐Mesoporosity for Activity Maximization of N‐Doped Carbonaceous Electrocatalysts for the Oxygen Reduction Reaction

Du, Cuicui; Liu, Xinlei; Ye, Guanghua; Gao, Xiaohui; Zhuang, Zhihua; Li, Ping; Xiang, Dong; Li, Xiaokun; Clayborne, Andre; Zhou, Xinggui; Chen, Wei

doi:10.1002/cssc.201802960

Cited by 56 publications

(45 citation statements)

References 50 publications

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“…Besides, higher total porosity significantly improves the ORR activity. 95 As for the M-N-C catalyst, there should also be a balanced ratio of micropore to mesopore, even macropore. 96 As shown in Figure 9B, in addition to Fe%, the representative Fe-N-C catalyst presents the dependent ORR activity on the ratio of micropore to mesopore.…”

Section: Engineering Of Porous Structuresmentioning

confidence: 99%

“…95 Reproduced with permission: Copyright 2019, Wiley. 95 B, Relationships among the kinetics current density at 0.9 V, Fe content, and the ratio of micropore/mesopore. 97 Reproduced with permission: Copyright 2017, American Chemical Society 97 F I G U R E 1 0 An overview of biological materials, the biomass, demonstrating a wide range in length scales and structures according to their critical dimensions.…”

Section: Artificial Porous Structure Derived From Biomass Precursorsmentioning

confidence: 99%

“…Obviously, as the microporosity increases, the ORR activity increases and then decreases, indicating the importance of the balanced micropores and mesopores. Besides, higher total porosity significantly improves the ORR activity 95 . As for the M‐N‐C catalyst, there should also be a balanced ratio of micropore to mesopore, even macropore 96 .…”

Section: Engineering Of Porous Structuresmentioning

confidence: 99%

“…A, Theoretical relationships among the relative oxygen reduction reaction activity, total porosity, and microporosity 95 . Reproduced with permission: Copyright 2019, Wiley 95 . B, Relationships among the kinetics current density at 0.9 V, Fe content, and the ratio of micropore/mesopore 97 .…”

Section: Engineering Of Porous Structuresmentioning

confidence: 99%

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Biomass‐derived nonprecious metal catalysts for oxygen reduction reaction: The demand‐oriented engineering of active sites and structures

et al. 2020

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Oxygen reduction reaction (ORR) is an important electrochemical process for renewable energy conversion and storage applications such as fuel cells and metal-air batteries. ORR is sluggish in kinetics and requires a large amount of platinum group metal (PGM)-based catalysts to facilitate its slow reaction rate. Application of precious metals raises the cost and decreases the competitivity of these devices in the market. To address this challenge, PGM-free ORR catalysts have been intensively investigated as an alternative to replace the PGM-based catalysts and to promote the deployment of ORR-related applications. In particular, the biomass holds promising potential to be used as the precursor material for PGM-free ORR catalysts. This pathway has gained more and more attention in recent years. In this review, recent advances regarding biomass-derived ORR catalysts are summarized with a focus on the rational design of both active sites and porous structures which are the two key factors in determining ORR performance of catalysts. At the end, the perspectives of development of biomass-derived catalysts is discussed.

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Section: Engineering Of Porous Structuresmentioning

confidence: 99%

Section: Artificial Porous Structure Derived From Biomass Precursorsmentioning

confidence: 99%

Section: Engineering Of Porous Structuresmentioning

confidence: 99%

Section: Engineering Of Porous Structuresmentioning

confidence: 99%

See 2 more Smart Citations

Biomass‐derived nonprecious metal catalysts for oxygen reduction reaction: The demand‐oriented engineering of active sites and structures

et al. 2020

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“…Doping carbons with electron‐deficient boron would favor the adsorption of O 2 in the boron dopant [20–22] . Different types of nitrogen‐doped carbons have been proven to benefit ORR performance [23–25] . Relevant research on B and N co‐doped carbon materials as ORR catalysts has been reported [26–28] …”

Section: Introductionmentioning

confidence: 99%

B, N Co‐doped Nanocarbon Derived In Situ from Nanoboron Carbide as Electrocatalyst for Oxygen Reduction Reaction

Zhou

Zang

et al. 2021

ChemNanoMat

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Heteroatom‐doped metal free carbon materials, especially boron and nitrogen co‐doped carbons have been widely researched as promising oxygen reduction electrocatalysts because of their low cost, high activity and environmental friendliness. However, B, N‐doped carbon electrocatalysts are usually prepared at high temperature and accompanied by the formation of B−N bonds resulting in the inactivation of the active sites. This paper proposed a strategy for synthesizing B and N co‐doped carbons for oxygen reduction reaction in‐situ derived from nano‐boron carbide by one‐step heat treatment at low temperature. This strategy can produce B‐ and N‐doped active sites while avoiding formation of B−N bonds, allowing electrocatalysts to exhibit excellent catalytic activities (Eonset=0.93 V, E1/2=0.79 V) and better stability (current density remained 93.3% after 12,000 s) comparable to commercial Pt/C (20 wt%). New ideas were provided by this work to massively produce the B and N co‐doped carbon electrocatalysts candidates for ORR.

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Electrocatalytic reduction of Molecular Oxygen with a Copper (II) Coordination Polymer

Kamyabi

Soleymani‐Bonoti

Taheri

et al. 2020

Applied Organom Chemis

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Oxygen reduction at the polarized water/1,2‐dichloroethane (DCE) interface catalyzed by a Cu (II) coordination polymer (Cu–pol) was studied with two lipophilic electron donors ferrocene (Fc) and tetrathiafulvalene (TTF). The results of the ion transfer voltammetry and two‐phase shake flask experiments suggest proceeding of the catalytic reaction as proton‐coupled electron transfer reduction of oxygen to hydrogen peroxide and water. In this process, while the protons supplied from the aqueous phase, the electrons provided from the organic phase by the weak electron donor, Fc. The O2 molecule takes a superoxide structure with Cu–pol which resulted to hydrogen peroxide or water on reduction. Furthermore, the results revealed that the apparent rate constant of TTF + Cu‐pol is higher than that of Fc + Cu‐pol system due to the faster kinetic reaction of TTF with respect to Fc.

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Balancing the Micro‐Mesoporosity for Activity Maximization of N‐Doped Carbonaceous Electrocatalysts for the Oxygen Reduction Reaction

Abstract: Supporting Information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.

Cited by 56 publications

References 50 publications

Biomass‐derived nonprecious metal catalysts for oxygen reduction reaction: The demand‐oriented engineering of active sites and structures

Biomass‐derived nonprecious metal catalysts for oxygen reduction reaction: The demand‐oriented engineering of active sites and structures

B, N Co‐doped Nanocarbon Derived In Situ from Nanoboron Carbide as Electrocatalyst for Oxygen Reduction Reaction

Electrocatalytic reduction of Molecular Oxygen with a Copper (II) Coordination Polymer

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