Synthesis of ZIF/CNT nanonecklaces and their derived cobalt nanoparticles/N-doped carbon catalysts for oxygen reduction reaction

Tong, Yuping; Liang, Yan; Hu, Yaoxin; Shamsaei, Ezzatollah; Wei, Jing; Hao, Yaoyao; Mei, Wanwan; Chen, Xi; Shi, Yurong; Wang, Huanting

doi:10.1016/j.jallcom.2019.152684

Cited by 27 publications

(15 citation statements)

References 27 publications

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“…It was found that after carbonization, the ZIF-derived porous materials are metal−nitrogen codoped carbon composites. 23,24 Inspired by these studies, ZIF-8 and polyacrylonitrile (PAN) were composited by electrospinning, and then zinc−nitrogen Consequently, the electrochemical performance of Li−S batteries with the prepared ZnNC nanofiber interlayer has been greatly improved. O solution was then added to the 2-MIM solution slowly under sustained stirring.…”

Section: Introductionmentioning

confidence: 99%

“…Zeolitic imidazolate frameworks (ZIFs) are composed of imidazole ligands and metal ions and have a regular polyhedral morphology, high specific surface area, and a porous structure. It was found that after carbonization, the ZIF-derived porous materials are metal–nitrogen codoped carbon composites. , Inspired by these studies, ZIF-8 and polyacrylonitrile (PAN) were composited by electrospinning, and then zinc–nitrogen (Zn–N) codoped carbon (ZnNC) nanofibers with pea-shaped voids have been prepared after peroxidation and carbonization in this study. The obtained ZnNC nanofibers were used as an interlayer of Li–S batteries, which can effectively adsorb LiPSs and catalyze their redox reaction.…”

Section: Introductionmentioning

confidence: 99%

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Zn–N Codoped Carbon Nanofiber Interlayer for Anchor and Catalysis of Polysulfides in Lithium–Sulfur Batteries

Fang

Cheng

Sun

et al. 2022

ACS Appl. Energy Mater.

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Lithium−sulfur (Li−S) batteries have aroused extensive attention owing to the high theoretical capacity and energy density; however, their practical applications are impeded by the insulation of sulfur and lithium sulfides and the shuttle effect of lithium polysulfides (LiPSs). Here, zinc−nitrogen codoped carbon (ZnNC) nanofibers with pea-shaped voids were fabricated as an interlayer of Li−S batteries. It was found that the ZnNC nanofibers can anchor LiPSs and catalyze their redox conversion effectively. The cross-linked ZnNC nanofiber interlayer acting as an upper current collector can enhance the electron transfer and accelerate the lithium ion diffusion. The combined effects of the addition of the ZnNC nanofiber interlayer endow the Li−S batteries with high capacity, highrate performance, and long cycle stability. The initial capacity is 1198.5 mAh g −1 at 0.5 C for the cell with a sulfur loading of about 1.0 mg cm −2 . After 500 cycles at 1 C, a capacity of 694.1 mAh g −1 is retained with a low capacity fading of 0.073% per cycle. When the sulfur loading is 6.19 mg cm −2 , the capacity reaches 754.8 mAh g −1 after 100 cycles at 0.2 C.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Zn–N Codoped Carbon Nanofiber Interlayer for Anchor and Catalysis of Polysulfides in Lithium–Sulfur Batteries

Fang

Cheng

Sun

et al. 2022

ACS Appl. Energy Mater.

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“…High‐temperature thermal treatment at 1000°C produced a catalyst with a good onset and half‐wave potential 1.03 and 0.89 V RHE , respectively, in an alkaline solution as well as an excellent stable chronoamperometric response (Figure 19B,C). Hao et al 205 in 2020 introduced the same strategy but with a negligible difference in which a composite of CNT and bimetallic MOF(Zn/Co) was applied to produce the nano‐necklaces structure. First of all, the surface of CNTs was modified with carboxyl groups to a better and homogeneous deposit of ZIF, and then by adjusting the molar ratio of Zn/Co in ZIF precursor and the next step, carbonization process, followed by acid leaching, the best catalyst was afforded.…”

Section: Classification Of Mof‐based Precursors and Resulted Orr Electrocatalystsmentioning

confidence: 99%

Carbon‐based nonprecious metal electrocatalysts derived fromMOFsfor oxygen‐reduction reaction

et al. 2021

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Summary Oxygen‐reduction reaction (ORR) is the most critical factor in energy conversion technologies such as fuel cells. Barriers such as the high cost of Pt and its scarce reservoirs worldwide limit the use of the most advanced Pt‐based catalysts for the ORR reaction. Metal–organic frameworks (MOFs) have attracted considerable attention for the production of carbon‐based nonprecious metal electrocatalysts (NPMC) due to their cost‐effective properties and adjustment of MOF as precursors. The new insight of this review article is focused on clarification of synthesis‐structure‐activity correlations of the presented ORR electrocatalysts for fuel cell applications. Classification of different MOF precursors and their final desirable electrocatalysts after the pyrolysis process are discussed. ORR performance (activity and stability) and their fuel cell performances are investigated for different MOF‐derived materials like monometallic, bimetallic composites, and even single‐atom electrocatalysts. Eventually, readers find a deeper understanding and inspiration of the emerging field of nonprecious MOF‐derived catalysts.

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“…To overcome the abovementioned obstacles, ZIFs-derived catalysts have been introduced onto porous carbon supports to achieve superior electrocatalytic performance, including carbon nanotubes (CNTs), carbon nanofibers, graphitic carbon nitride (g-C 3 N 4 ) and graphene oxide (GO). [24][25][26][27][28][29][30] Especially, one-dimensional (1D) polypyrrole (PPy) nanotubes will be a suitable candidate due to their hollow tubular structure and abundant nitrogen source. [31] Additionally, the ZIFs can be homogeneously and tightly anchored on PPy surface by adjusting the surface charge of PPy.…”

Section: Introductionmentioning

confidence: 99%

Bimetal Metal‐Organic Frameworks Derived Hierarchical Porous Cobalt@Nitrogen‐Doped Carbon Tubes as An Efficient Electrocatalyst for Oxygen Reduction Reaction

Mou

Liu

et al. 2022

ChemElectroChem

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The design and preparation of inexpensive, stable, and superior catalysts for the oxygen reduction reaction (ORR) are significant but challenging towards sustainable energy conversion technologies. Herein, a tubular template‐assisted strategy for fabrication of cobalt nanoparticles (Co NPs) embedded in one‐dimensional (1D) N‐doped porous tubular carbon composites (Co@N−CTs) is developed via in‐situ growth of bimetallic zeolitic imidazolate frameworks (ZnCo−ZIFs) on hollow polypyrrole (PPy) nanotubes surface. The PPy can not only act as a hollow tubular template, but also efficiently inhibit aggregation of Co NPs. Thanks to the 1D tubular interconnected networks and abundant micro‐/nano‐ porous tube wall structure, the as‐prepared Co@N−CTs catalyst achieves outstanding ORR performance with an onset potential (E0) of 0.982 V and a half‐wave potential (E1/2) of 0.864 V. Meanwhile, the Co@N−CTs catalyst also demonstrates superior durability with slightly decay of 3 % of initial current over 40000 s, as well as tolerance to the methanol. Furthermore, the Co@N−CTs cathode exhibits a large specific capacity (784 mAh g−1) and satisfying power density (116 mW cm−2) in a Zn‐air battery.

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Synthesis of ZIF/CNT nanonecklaces and their derived cobalt nanoparticles/N-doped carbon catalysts for oxygen reduction reaction

Cited by 27 publications

References 27 publications

Zn–N Codoped Carbon Nanofiber Interlayer for Anchor and Catalysis of Polysulfides in Lithium–Sulfur Batteries

Zn–N Codoped Carbon Nanofiber Interlayer for Anchor and Catalysis of Polysulfides in Lithium–Sulfur Batteries

Carbon‐based nonprecious metal electrocatalysts derived fromMOFsfor oxygen‐reduction reaction

Bimetal Metal‐Organic Frameworks Derived Hierarchical Porous Cobalt@Nitrogen‐Doped Carbon Tubes as An Efficient Electrocatalyst for Oxygen Reduction Reaction

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