Functionalization of multi-walled carbon nanotubes with iron phthalocyanine via a liquid chemical reaction for oxygen reduction in alkaline media

Yan, Xiaomei; Xu, Xiao; Liu, Qin; Guo, Jia; Kang, Longtian; Yao, Jiannian

doi:10.1016/j.jpowsour.2018.03.042

Cited by 60 publications

(34 citation statements)

References 43 publications

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“…23 Within the context of the replacement of platinum in fuel cells, we and others envisioned the use of porphyrin or phthalocyanine-functionalized carbon nanotubes in electrocatalytic systems. 29,[31][32][33][34][35][36][37][38][39][40][41][42] In such systems, the macrocycle catalytic sites are supported on carbon nanotubes acting as conducting materials. Generally, the macrocycles are just adsorbed on the nanotube surface but recently we reported a new method of functionalization based on the templated polymerization of meso-tetraethynylporphyrin around the nanotubes; 32 this method was also used by other groups 37,38 and extended to the synthesis of iron-phthalocyanine via tetramerization of 1,2,4,5-benzenetetranitrile in the presence of FeCl 2 around MWNT.…”

Section: Introductionmentioning

confidence: 99%

Synergic effect on oxygen reduction reaction of strapped iron porphyrins polymerized around carbon nanotubes

et al. 2018

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Section: Introductionmentioning

confidence: 99%

Synergic effect on oxygen reduction reaction of strapped iron porphyrins polymerized around carbon nanotubes

et al. 2018

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“…A similar strategy to achieve stable atomically dispersed Co on nitrogen doped porous carbon with high metal loading over 4 wt % is reported by Yin et al . Another kind of precursor is a phthalocyanine based metal precursor, which already maintained the final structure of the metal‐N−C . The advantage of this kind of precursor is that they normally produce uniformly distributed species in the final products.…”

Section: Synthesis Methods For Supported Single Atomsmentioning

confidence: 99%

The Role of Supported Atomically Distributed Metal Species in Electrochemistry and How to Create Them

2019

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Supported atomically distributed metal species are extensively applied as catalysts to exceed the properties of their bulk analogues. Their electronic structures can be easily tuned by neighboring support atoms or ligands to control their activities for different reactions. The high accessibility and therefore almost 100 % reactivity of the highly distributed active sites provide new opportunities for electrochemical applications that were previously only suitable for noble metals. Although a lot of work has been done in this area, the demand for large‐scale applications and, therefore, also large‐scale production is still far from sufficient. In this Review, we selected some recent publications to show the current state of applications of dispersed single‐atom catalysts in the oxygen reduction/evolution reaction and hydrogen evolution reaction, with a focus on their mechanisms in reactions, the underlying challenges, and synthesis methods. A further discussion on how the electrocatalytic performance of the supported single atom catalysts can be tailored to meet the requirements of large‐scale applications is also proposed.

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“…A similar composite material with modified functional multi‐wall carbon nanotubes loaded with FePc molecules was achieved an improved ORR activity with a half‐wave potential ( E 1/2 ) of 0.86 V in 0.1 m KOH, as well as superior performance in the assembled Zn‐air battery (Figure 6). [66] …”

Section: Rational Design Of Nitrogen‐rich Precursors and Porous Strucmentioning

confidence: 99%

“…A similar composite material with modified functional multi-wall carbon nanotubes loaded with FePc molecules was achieved an improved ORR activity with a half-wave potential (E 1/2 ) of 0.86 V in 0.1 m KOH, as well as superior performance in the assembled Zn-air battery (Figure 6). [66] In nature, cytochrome C oxidase contains a unique iron(II)porphyrin structure, where the iron center maintains a fivecoordinated structure with an axial ligand from the backside. [67] Inspired by the unique characteristics of the active structure, another effective method is to graft N-containing functional groups on carbon surface to form an axial covalent bond between the carbon matrix and MÀ N 4 macrocycle.…”

Section: Macrocyclic Compoundsmentioning

confidence: 99%

Transition Metal and Nitrogen Co‐Doped Carbon‐based Electrocatalysts for the Oxygen Reduction Reaction: From Active Site Insights to the Rational Design of Precursors and Structures

et al. 2020

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Considering the urgent requirement for clean and sustainable energy, fuel cells and metal‐air batteries have emerged as promising energy storage and conversion devices to alleviate the worldwide energy challenges. The key step in accelerating the sluggish oxygen reduction reaction (ORR) kinetics at the cathode is to develop cost‐effective and high‐efficiency non‐precious metal catalysts, which can be used to replace expensive Pt‐based catalysts. Recently, the transition metal and nitrogen co‐doped carbon (M−Nx/C) materials with tailored morphology, tunable composition, and confined structure show great potential in both acidic and alkaline media. Herein, the mechanism of ORR is provided, followed by recent efforts to clarify the actual structures of active sites. Furthermore, the progress of optimizing the catalytic performance of M−Nx/C catalysts by modulating nitrogen‐rich precursors and porous structure engineering is highlighted. The remaining challenges and development prospects of M−Nx/C catalysts are also outlined and evaluated.

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Functionalization of multi-walled carbon nanotubes with iron phthalocyanine via a liquid chemical reaction for oxygen reduction in alkaline media

Cited by 60 publications

References 43 publications

Synergic effect on oxygen reduction reaction of strapped iron porphyrins polymerized around carbon nanotubes

Synergic effect on oxygen reduction reaction of strapped iron porphyrins polymerized around carbon nanotubes

The Role of Supported Atomically Distributed Metal Species in Electrochemistry and How to Create Them

Transition Metal and Nitrogen Co‐Doped Carbon‐based Electrocatalysts for the Oxygen Reduction Reaction: From Active Site Insights to the Rational Design of Precursors and Structures

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