FeCo nanoalloys encapsulated in N-doped carbon nanofibers as a trifunctional catalyst for rechargeable Zn-air batteries and overall water electrolysis

Yang, Wenlu; Guo, Jianing; Ma, Jingyuan; Wu, Na; Xiao, Jun; Wu, Mingxing

doi:10.1016/j.jallcom.2022.166937

Cited by 25 publications

(15 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During operation, the oxygen electrode reactions, including the oxygen reduction reaction (ORR) in discharge and the oxygen evolution reaction (OER) in charge, proceed in a four-electron transfer process, thus normally having sluggish kinetics. Thus, improving the reaction kinetics in ORR/OER is a crucial step for promoting the comprehensive performance of zinc–air batteries. − Pt/Ru-based materials are widely used in ORR and OER, − but their high cost and scarcity greatly limit their commercial application. Aiming at this dilemma, cost-effective and high-performance nonprecious metal-based electrocatalysts are critical for the commercialized application of zinc–air batteries. − …”

Section: Introductionmentioning

confidence: 99%

Hollow Co/N-C@NiCo₂O₄ Spheres as Highly Efficient Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Zhu

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

In this paper, hollow Co/N-C@NiCo 2 O 4 spheres assembled by nanoparticles were developed as efficient bifunctional catalysts for zinc−air batteries. The hollow structure is synthesized with ZIF-67 as a reactant template. NiCo-LDH grown on the ZIF-67 surface maintains its structural integrity during heat treatment and reduces the agglomeration of the material, which promotes charge transport during the catalytic process. The hollow structure has a specific surface area of 124.3 m 2 g −1 with rich catalytic active sites. As expected, the power density of the Co/N-C@NiCo 2 O 4based Zn−air battery is 176 mW cm −2 and the specific capacity is 745 mAh g −1 , with 1.45 V open-circuit voltage and 100 h cycling life, much better than those of the 20% Pt/C-RuO 2 -based Zn−air battery (1.42 V, 133 mW cm −2 , 721 mAh g −1 ).

show abstract

Section: Introductionmentioning

confidence: 99%

Hollow Co/N-C@NiCo₂O₄ Spheres as Highly Efficient Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Zhu

et al. 2023

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…5−8 However, the high overpotential and the slow charge-transfer kinetics involved in the fundamental electrochemical reactions greatly limit the catalytic efficiency and applications. 9,10 The development of nonprecious metal nanocatalysts for application in efficient and durable hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is indispensable today. 11 Transition metal oxides (TMO) are the most potential candidates owing to the simple preparation methods and outstanding catalytic activity.…”

Section: Introductionmentioning

confidence: 99%

“…Exploring renewable and clean energies remains a top priority to address the energy shortage. − Water electrolysis draws increasing attention owing to the efficiency, purity, and selectivity in hydrogen evolution. − However, the high overpotential and the slow charge-transfer kinetics involved in the fundamental electrochemical reactions greatly limit the catalytic efficiency and applications. , The development of nonprecious metal nanocatalysts for application in efficient and durable hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) is indispensable today . Transition metal oxides (TMO) are the most potential candidates owing to the simple preparation methods and outstanding catalytic activity. , However, the simultaneous occurrence of HER and OER is hard to perform by single-component TMO-based materials.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Interaction Engineering of FeCoS@CoMoP for pH-Universal H₂ and Alkaline Medium O₂ Evolution

Jiao,

Lu,

Song

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Engineering efficient catalyst interfaces offers a constructive way to boost activity and stability in the field of water electrolysis. Here, unique core–shell FeCoS@CoMoP heterostructure nanoparticles are rationally fabricated on a porous Ni foam through hydrothermal and electrodeposition methods. The as-prepared electrocatalyst exhibits efficient pH-universal hydrogen evolution reaction (HER) activity along with a satisfactory alkaline oxygen evolution reaction (OER) performance, extremely small overpotentials, and Tafel values, achieving prominent durability and stability. A series of structural characterizations help identify the reactive centers during the catalytic procedure and the tight interfacial interaction between the shell and core materials. Density functional theory (DFT) calculations reveal that the surface electrodeposition of CoMoP not only tunes the d-band center but also obviously decreases the Gibbs free energies in the HER/OER processes. It can be expected that the three-dimensional self-supported catalytic system will hold strong promise for effective water splitting, energy storage, and energy transformation devices.

show abstract

“…Impressively, this catalyst was multifunctional, excelling in HER, OER, and ORR applications. 16 The remarkable catalytic activity of the electrocatalyst is due to the synergistic interaction between the carbon nanofibers and the FeCo alloy sites. Despite the high stability and electrocatalytic activity of the electrocatalysts made by using the aforementioned methodologies, the synthetic processes were usually difficult and required a lengthy synthetic duration.…”

Section: Introductionmentioning

confidence: 99%

“…This was accomplished via electrospinning followed by carbonization processes. Impressively, this catalyst was multifunctional, excelling in HER, OER, and ORR applications . The remarkable catalytic activity of the electrocatalyst is due to the synergistic interaction between the carbon nanofibers and the FeCo alloy sites.…”

Section: Introductionmentioning

confidence: 99%

Convenient Synthesis of NiCo Alloy Nanoparticles Encapsulated by N-Doped Porous Carbon for the Oxygen Evolution Reaction

Wang,

Zhang,

Liu

et al. 2023

ACS Appl. Nano Mater.

View full text Add to dashboard Cite

Extremely important for water electrolysis are the rational design and investigation of oxygen evolution reaction (OER) electrocatalysts with excellent performance and long-term durability and that are precious metal-free. Herein, we demonstrate the convenient synthesis of a nitrogen-doped carbonwrapped nickel cobalt alloy (NiCo 2 @NC) by pyrolysis of the metal complex. The results indicate that the ideal Ni/Co ratio and NC wrapping can provide high C dl , low charge transfer resistance, and long-term durability for electrocatalysts, which are all reasons for significant OER performance. The optimal NiCo 2 @NC composite exhibits rapid OER reaction kinetics, which require a comparatively low overpotential of 288 mV at 10 mA cm −2 and a relatively small Tafel slope of 66 mV dec −1 in the alkaline electrolyte. Furthermore, I−t experiments were performed to demonstrate its better long-term catalytic endurance. In short, this study may provide guidance for the rational construction and design of carboncoated bimetallic alloy materials.

show abstract

FeCo nanoalloys encapsulated in N-doped carbon nanofibers as a trifunctional catalyst for rechargeable Zn-air batteries and overall water electrolysis

Cited by 25 publications

References 52 publications

Hollow Co/N-C@NiCo₂O₄ Spheres as Highly Efficient Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Hollow Co/N-C@NiCo₂O₄ Spheres as Highly Efficient Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Interfacial Interaction Engineering of FeCoS@CoMoP for pH-Universal H₂ and Alkaline Medium O₂ Evolution

Convenient Synthesis of NiCo Alloy Nanoparticles Encapsulated by N-Doped Porous Carbon for the Oxygen Evolution Reaction

Contact Info

Product

Resources

About

FeCo nanoalloys encapsulated in N-doped carbon nanofibers as a trifunctional catalyst for rechargeable Zn-air batteries and overall water electrolysis

Cited by 25 publications

References 52 publications

Hollow Co/N-C@NiCo2O4 Spheres as Highly Efficient Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Hollow Co/N-C@NiCo2O4 Spheres as Highly Efficient Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Interfacial Interaction Engineering of FeCoS@CoMoP for pH-Universal H2 and Alkaline Medium O2 Evolution

Convenient Synthesis of NiCo Alloy Nanoparticles Encapsulated by N-Doped Porous Carbon for the Oxygen Evolution Reaction

Contact Info

Product

Resources

About

Hollow Co/N-C@NiCo₂O₄ Spheres as Highly Efficient Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Hollow Co/N-C@NiCo₂O₄ Spheres as Highly Efficient Bifunctional Oxygen Electrocatalysts for Rechargeable Zinc–Air Batteries

Interfacial Interaction Engineering of FeCoS@CoMoP for pH-Universal H₂ and Alkaline Medium O₂ Evolution