Efficient oxygen reduction catalysts formed of cobalt phosphide nanoparticle decorated heteroatom-doped mesoporous carbon nanotubes

Chen, Kuiyong; Huang, Xiaobin; Wan, Chaoying; Liu, Hong

doi:10.1039/c5cc02028j

Cited by 87 publications

(45 citation statements)

References 22 publications

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“…The Co 2p 3/2 spectrum of FeNiCo@NC reveals four fitted peaks (Figure d) at 778.2, 780.0, 782.5, and 785.6 eV which can be assigned to the metallic Co, oxidized Co species, auger peak of Fe, and satellite peak of Co . The formation of oxidized Co species is attributed to the exposure of Co in air . According to the previous reports, Co‐P covalent bonds can decrease the electron density of Co species, thus making a small shift of Co 2p spectrum 22a,24.…”

Section: Resultsmentioning

confidence: 89%

Hierarchically Porous Multimetal‐Based Carbon Nanorod Hybrid as an Efficient Oxygen Catalyst for Rechargeable Zinc–Air Batteries

Ren

Ying

Xiao

et al. 2019

Adv Funct Materials

122

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The lack of efficient strategies to address the intrinsic activity, site accessibility, and structural stability issues of metal‐carbon hybrid catalysts is restricting their real‐world implementation on the basis of rechargeable zinc–air batteries. Herein, a dual metal–organic frameworks (MOFs) pyrolysis strategy is developed to regulate the intrinsic activity and porous structure of the derived catalysts, where a Fe2Ni_MIL‐88@ZnCo_zeolitic imidazolate framework (ZIF), with a hierarchically porous structure, multifunctional components, and an integrated architecture, acts as an ideal precursor to obtain multimetal based porous nanorod (FeNiCo@NC‐P). Benefitting from the synergetic effect of the multimetal components, facilitated reactant accessibility, and the well‐retained integrated structure, the resultant FeNiCo@NC‐P catalyst exhibits an oxygen reduction reaction half‐wave potential of 0.84 V as well as an oxygen evolution reaction potential of 1.54 V at 10 mA cm–2. Furthermore, the practical application of FeNiCo@NC‐P in the zinc–air battery displays a low voltage gap and long‐term durability (over 130 h at a current density of 10 mA cm–2), which outperforms the commercial noble metal benchmarks. This work not only affords a competitive bifunctional oxygen electrocatalyst for zinc–air batteries but also paves a new way to design and fabricate MOF‐derived materials with tunable catalytic properties.

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Section: Resultsmentioning

confidence: 89%

Hierarchically Porous Multimetal‐Based Carbon Nanorod Hybrid as an Efficient Oxygen Catalyst for Rechargeable Zinc–Air Batteries

Ren

Ying

Xiao

et al. 2019

Adv Funct Materials

122

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“…Noble metal (e.g., platinum group metal)‐based materials are the highest performing catalysts for HER and ORR, but their rarity and accompanying high cost pose a serious limitation to the use of noble‐metal‐based materials for global‐scale applications. Discovering inexpensive alternatives is constantly the ambition of chemists and materials scientists, in which transition‐metal (Co, Ni,[4a,5] Fe, or Mo[6d,7]) phosphides (TMPs) are a very promising and competitive candidate to replace precious‐metal catalysts due to their high electrical conductivity and activity . Copper is another earth‐abundant and low‐cost material, and copper‐based compounds have demonstrated excellent catalytic activities in energy conversion reactions .…”

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confidence: 99%

MOF‐Derived Bifunctional Cu₃P Nanoparticles Coated by a N,P‐Codoped Carbon Shell for Hydrogen Evolution and Oxygen Reduction

et al. 2017

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Metal-organic frameworks (MOFs) have recently emerged as a type of uniformly and periodically atom-distributed precursor and efficient self-sacrificial template to fabricate hierarchical porous-carbon-related nanostructured functional materials. For the first time, a Cu-based MOF, i.e., Cu-NPMOF is used, whose linkers contain nitrogen and phosphorus heteroatoms, as a single precursor and template to prepare novel Cu P nanoparticles (NPs) coated by a N,P-codoped carbon shell that is extended to a hierarchical porous carbon matrix with identical uniform N and P doping (termed Cu P@NPPC) as an electrocatalyst. Cu P@NPPC demonstrates outstanding activity for both the hydrogen evolution and oxygen reduction reaction, representing the first example of a Cu P-based bifunctional catalyst for energy-conversion reactions. The high performances are ascribed to the high specific surface area, the synergistic effects of the Cu P NPs with intrinsic activity, the protection of the carbon shell, and the hierarchical porous carbon matrix doped by multiheteroatoms. This strategy of using a diverse MOF as a structural and compositional material to create a new multifunctional composite/hybrid may expand the opportunities to explore highly efficient and robust non-noble-metal catalysts for energy-conversion reactions.

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“…Figure 1(c) is the Co 2p spectrum. The peaks at binding energy of 781.3 eV and 797.2 eV can be assigned to the Co 2p 3/2 and Co 2p 1/2 peaks of oxidized Co 2+ [31], while the peaks at 778.9 eV and 794.5 eV are corresponding to the Co 2p 3/2 and Co 2p 1/2 peaks of reduced Co [32]. Besides, the peaks located at 786.0 eV and 803.1 eV are satellites peaks (denoted as "Sat.").…”

Section: Resultsmentioning

confidence: 99%

Liquid Phase Synthesis of CoP Nanoparticles with High Electrical Conductivity for Advanced Energy Storage

Zhang

Liu

et al. 2017

Journal of Nanomaterials

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Transition metal phosphide alloys possess the metalloid characteristics and superior electrical conductivity and are a kind of high electrical conductive pseudocapacitive materials. Herein, high electrical conductive cobalt phosphide alloys are fabricated through a liquid phase process and a nanoparticles structure with high surface area is obtained. The highest specific capacitance of 286 F g −1 is reached at a current density of 0.5 A g −1 . 63.4% of the specific capacitance is retained when the current density increased 16 times and 98.5% of the specific capacitance is maintained after 5000 cycles. The AC//CoP asymmetric supercapacitor also shows a high energy density (21.3 Wh kg −1 ) and excellent stability (97.8% of the specific capacitance is retained after 5000 cycles). The study provides a new strategy for the construction of high-performance energy storage materials by enhancing their intrinsic electrical conductivity.

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Efficient oxygen reduction catalysts formed of cobalt phosphide nanoparticle decorated heteroatom-doped mesoporous carbon nanotubes

Cited by 87 publications

References 22 publications

Hierarchically Porous Multimetal‐Based Carbon Nanorod Hybrid as an Efficient Oxygen Catalyst for Rechargeable Zinc–Air Batteries

Hierarchically Porous Multimetal‐Based Carbon Nanorod Hybrid as an Efficient Oxygen Catalyst for Rechargeable Zinc–Air Batteries

MOF‐Derived Bifunctional Cu₃P Nanoparticles Coated by a N,P‐Codoped Carbon Shell for Hydrogen Evolution and Oxygen Reduction

Liquid Phase Synthesis of CoP Nanoparticles with High Electrical Conductivity for Advanced Energy Storage

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Efficient oxygen reduction catalysts formed of cobalt phosphide nanoparticle decorated heteroatom-doped mesoporous carbon nanotubes

Cited by 87 publications

References 22 publications

Hierarchically Porous Multimetal‐Based Carbon Nanorod Hybrid as an Efficient Oxygen Catalyst for Rechargeable Zinc–Air Batteries

Hierarchically Porous Multimetal‐Based Carbon Nanorod Hybrid as an Efficient Oxygen Catalyst for Rechargeable Zinc–Air Batteries

MOF‐Derived Bifunctional Cu3P Nanoparticles Coated by a N,P‐Codoped Carbon Shell for Hydrogen Evolution and Oxygen Reduction

Liquid Phase Synthesis of CoP Nanoparticles with High Electrical Conductivity for Advanced Energy Storage

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MOF‐Derived Bifunctional Cu₃P Nanoparticles Coated by a N,P‐Codoped Carbon Shell for Hydrogen Evolution and Oxygen Reduction