Improved ORR activity of non-noble metal electrocatalysts by increasing ligand and metal ratio in synthetic complex precursors

Wang, Liucheng; Zhang, Jiujun

doi:10.1016/j.electacta.2011.03.049

Cited by 26 publications

(17 citation statements)

References 14 publications

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“…Thus many of the studies using carbon black have been focused on the detailed study of other parameters of importance for understanding these NPMCs, including, e.g. the nitrogen content in the NPMC 49, the metal content in the NPMC 50, the effect of the kind of nitrogen and metal source used in the synthesis 50, the effect of heteroatom doping using ionic liquids 52 and the impact of acid washing and heat‐treatment as after treatment procedures for the NPMCs 52–56. These systematic tests of parameters influencing the activity of NPMCs are highly important in order to understand how they influence the activity and stability, which can then be correlated to the NPMC active site structure.…”

Section: Cathode Catalyst Materials Tested In Acidic Conditionsmentioning

confidence: 99%

Recent Progress in Synthesis, Characterization and Evaluation of Non‐Precious Metal Catalysts for the Oxygen Reduction Reaction

2016

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The oxygen reduction reaction (ORR) is usually catalyzed by precious metals. As the kinetics of the reaction are sluggish comparatively large amounts of precious metal are needed to achieve satisfactory reaction rates. This results in high cost of technologies utilizing the ORR, like low temperature fuel cells. Recent years have seen tremendous research efforts in the development of non‐precious metal catalysts (NPMCs) with a wide range of newly developed materials resulting in improved catalyst materials, an increased understanding of the ORR mechanism on NPMC materials and better knowledge of the active site structure. Here we summarize the developments from 2011 and onwards with a special focus on carbon‐based NPMCs developed for use in acid environments. We include explicit comparisons of PEMFC measurement results in all referenced studies and detailed information on the physical characterization methods used in various publications.

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Section: Cathode Catalyst Materials Tested In Acidic Conditionsmentioning

confidence: 99%

Recent Progress in Synthesis, Characterization and Evaluation of Non‐Precious Metal Catalysts for the Oxygen Reduction Reaction

2016

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“…Despite numerous attempts to exploit low‐cost and efficient non‐precious metal electrocatalysts to substitute traditional platinum‐based catalysts for oxygen reduction reaction (ORR) in the last several decades, it is still a long way for the large‐scale commercialization of these electrocatalysts in clean energy devices such as fuel cells and metal‐air batteries . In order to fulfil the requirements of the large‐scale commercial application, it is very crucial to seek the novel low‐cost non‐noble metal electrocatalysts with the higher ORR catalytic activity and durability.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5] In order to fulfil the requirements of the large-scale commercial application,i ti sv ery crucial to seek the novel low-cost nonnoble metal electrocatalysts with the higher ORR catalytic activity and durability.C opper,w ith abundantr eserves and low costs, only one electron away from platinum in amount of the de lectrons in the secondary outer shell of the atom, has attracted much attention. [1][2][3][4][5] In order to fulfil the requirements of the large-scale commercial application,i ti sv ery crucial to seek the novel low-cost nonnoble metal electrocatalysts with the higher ORR catalytic activity and durability.C opper,w ith abundantr eserves and low costs, only one electron away from platinum in amount of the de lectrons in the secondary outer shell of the atom, has attracted much attention.…”

Section: Introductionmentioning

confidence: 99%

“…Despite numerous attempts to exploit low-cost and efficient non-precious metal electrocatalysts to substitute traditional platinum-based catalysts for oxygen reduction reaction (ORR) in the last severald ecades, it is stillal ong way for the largescale commercialization of these electrocatalysts in clean energy devicess uch as fuel cells and metal-air batteries. [1][2][3][4][5] In order to fulfil the requirements of the large-scale commercial application,i ti sv ery crucial to seek the novel low-cost nonnoble metal electrocatalysts with the higher ORR catalytic activity and durability.C opper,w ith abundantr eserves and low costs, only one electron away from platinum in amount of the de lectrons in the secondary outer shell of the atom, has attracted much attention. The half-wavep otential for ORR over the Cu particles encapsulated in N-doped carbon shells reached0 .83 V RHE (relative to the reversible hydrogen electrode) and was 20 mV lower than that over the commercial Pt/ Cc atalyst.…”

Section: Introductionmentioning

confidence: 99%

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Pyrolytic Carbon‐coated Cu‐Fe Alloy Nanoparticles with High Catalytic Performance for Oxygen Electroreduction

Qiao

Kong

et al. 2019

Chemistry An Asian Journal

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Well-dispersed carbon-coated or nitrogen-doped carbon-coated copper-iron alloy nanoparticles (FeCu@Co r FeCu@CÀN) in carbon-based supports are obtained using a bimetallic metal-organic framework (Cu/Fe-MOF-74)o ra mixture of Cu/Fe-MOF-74 and melamine as sacrificial templates and an active-component precursor by using apyrolysis method.T he investigation resultsa ttest formation of CuÀ Fe alloy nanoparticles. The obtained FeCu@Cc atalyst exhibits ac atalytic activity with ah alf-wave potential of 0.83 Vf or oxygen reduction reaction (ORR) in alkalinem edium, comparable to that on commercial Pt/C catalyst (0.84 V).T he cata-lytic activity of FeCu@CÀNf or ORR (E half-wave = 0.87 V) outshinesa ll reported analogues. The excellent performance of FeCu@CÀNs hould be attributedt oachange in the energy of the d-band center of Cu resulting from the formationo f the copper-iron alloy,t he interaction between alloy nanoparticlesa nd supports and N-dopingi nt he carbon matrix. Moreover,F eCu@C and FeCu@CÀNs how better electrochemicals tability and methanol tolerance than commercial Pt/C and are expected to be widely used in practical applications.

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“…Replacing precious and scarce Pt‐based catalysts with cheap and commercially available materials to facilitate sluggish cathodic oxygen reduction reaction (ORR) is an important concern in the development of fuel cell technology, which has attracted much attention from both industrial and academic researchers in catalysis 1–3. A particularly exciting way is to develop nitrogen‐containing carbon materials, which displayed competitive activity and significantly enhanced stability as compared to commercial Pt/C catalysts in the ORR 4–6. Generally, nitrogen‐containing carbon materials can be obtained by two ways: doping N directly into carbon material during the synthesis, and post‐treatment of pre‐synthesized carbon materials with nitrogen‐containing precursors 7–11.…”

Section: Introductionmentioning

confidence: 99%

A Wasted Material, Duck Blood, as a Precursor of Non‐Precious Catalyst for the Oxygen Reduction Reaction

Yang

Wang

et al. 2014

Fuel Cells

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Searching for non‐precious electrocatalysts with high performance to replace the expensive Pt‐based electrocatalysts for oxygen reduction reaction (ORR) is a key issue in the industrial‐scale application of fuel cells. In this study, we have reported the synthesis of an iron doped N‐containing carbon materials, derived from duck blood, a wasted material in the duck meat production, as a novel and cost‐effective catalyst in ORR. The as‐prepared electrocatalysts were characterized by means of powder X‐ray diffraction, scanning electron microscopy, Raman spectroscopy and X‐ray photoelectron spectrometer. In 0.1 mol L−1 KOH solution, the ORR onset potential and the half‐wave potential for the iron doped N‐containing carbon materials are 33 mV and –120 mV respectively, which are close to those of commercial Pt/C (20 wt%). In addition, the iron doped N‐containing carbon materials exhibit excellent tolerance to methanol crossover, which makes it a promising electrocatalyst for ORR in fuel cell.

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Improved ORR activity of non-noble metal electrocatalysts by increasing ligand and metal ratio in synthetic complex precursors

Cited by 26 publications

References 14 publications

Recent Progress in Synthesis, Characterization and Evaluation of Non‐Precious Metal Catalysts for the Oxygen Reduction Reaction

Recent Progress in Synthesis, Characterization and Evaluation of Non‐Precious Metal Catalysts for the Oxygen Reduction Reaction

Pyrolytic Carbon‐coated Cu‐Fe Alloy Nanoparticles with High Catalytic Performance for Oxygen Electroreduction

A Wasted Material, Duck Blood, as a Precursor of Non‐Precious Catalyst for the Oxygen Reduction Reaction

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