Strongly coupled Co, N co-doped carbon nanotubes/graphene-like carbon nanosheets as efficient oxygen reduction electrocatalysts for primary Zinc-air battery

Fu, Kang; Wang, Yang; Mao, Linchang; Yang, Xiaoxiao; Li, Guang; Yang, Shengrong

doi:10.1016/j.cej.2018.06.059

Cited by 91 publications

(40 citation statements)

References 59 publications

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“…As shown in Figure S6F, the Co-NCNT catalyst showed the potential gap of 0.83 V between the half-wave potential for ORR and potential at 10 mA/cm 2 for OER, implying the Co-NCNT catalyst is a potential bifunctional oxygen electrocatalyst. 44,45 To test the performance of the as-prepared CC-A-N@Co-NNCTs in rechargeable ZABs, a ZAB with the material as self-standing air electrode, zinc foil as the anode, and a 6M KOH and 0.2M ZnCl 2 mixed aqueous solution as the electrolyte was constructed ( Figure 3A). The discharge performance of the ZABs was first explored, and comparison was made with similar cells of different air electrodes.…”

Section: Resultsmentioning

confidence: 99%

Direct growth of ordered N‐doped carbon nanotube arrays on carbon fiber cloth as a free‐standing and binder‐free air electrode for flexible quasi‐solid‐state rechargeable Zn‐Air batteries

et al. 2020

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The development of an air electrode that is flexible in physical property and highly active and durable at different geometric status for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) is of crucial importance for the rational design of flexible rechargeable Zn‐air batteries (ZABs). Considering their good elasticity, high conductivity, and superior thermal and chemical stability, carbon nanotubes have been widely used as a catalyst support in various electrocatalysts, while oxide or metal nanoparticles have been frequently deposited on the carbon nanotube substrate to perform as the active materials. Considering the poor contact between active materials and carbon nanotubes may introduce a challenge for long‐term operating stability, in particular in flexible devices, pure carbon electrocatalyst is highly appreciated. Herein, a free‐standing air electrode with cobalt nanoparticles encapsulated N‐codoped carbon nanotube arrays uniformly grown on the surface of carbon fiber cloth is developed by a two‐step in situ growth method. Such a carbon‐based electrode shows outstanding activity for both ORR and OER. The flexible ZAB with such air electrode shows superior flexibility and stability working under extreme bending conditions. Moreover, the polarization and round‐trip efficiency for the flexible battery is 0.67 V and 64.4% at 2 mA/cm2, respectively, even after being operated for 30 hours. This study provides a feasible way to design all carbon‐based free‐standing and flexible electrode and enlightens the electrode design for flexible energy conversion/storage devices.

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Section: Resultsmentioning

confidence: 99%

Direct growth of ordered N‐doped carbon nanotube arrays on carbon fiber cloth as a free‐standing and binder‐free air electrode for flexible quasi‐solid‐state rechargeable Zn‐Air batteries

et al. 2020

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“…Given the decrease in fossil fuel reserves and increase in environmental issues, as well as the rapid population and industrialization, significant demand for sustainable and renewable energy has stimulated researches in the way of development of alternative energy storage and conversion systems including metal-air batteries, fuel cells, supercapacitors, etc. [1][2][3][4]. Notably, due to their phenomenal features including high energy density, abundant source as well as environmental benignity, metal-air batteries and fuel cells have gained huge interest [4,5].…”

Section: Introductionmentioning

confidence: 99%

Orange Peel Derived‐Nitrogen and Sulfur Co‐doped Carbon Dots: a Nano‐booster for Enhancing ORR Electrocatalytic Performance of 3D Graphene Networks

Karaman

2021

Electroanalysis

158

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Herein, nitrogen, sulfur co‐doped carbon dots (N,S−CDs) have been synthesized by a cost‐natural fabrication method using waste orange‐peel as a natural‐carbon‐precursor. N,S−CDs have been hydrothermally anchored to the three‐dimensional‐graphene‐networks (3D−GNs) to boost the electrocatalytic activity by a defective surface effect. Due to the synergistic utilization of heteroatoms, and effective mass‐transfer and improved transport kinetics resulting from interconnected 3D‐architecture, N,S−CDs anchored 3D−GNs (N,S−CDs@3D−GNs) grant superior oxygen‐reduction‐reaction (ORR) activity. N,S−CDs@3D−GNs exhibit a dominant four‐electron pathway (n=3.89) for ORR in alkaline media besides superior methanol tolerance and robust stability. This work opens a door for converting low‐value agricultural wastes into value‐added materials for utilizing in energy application.

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“…The development of this kind of flexible Zn−air battery can bring new avenues for wearable electronic devices. Similarly, Guang and co‐workers designed a Co−NCNT/Ng catalyst which has a 3D framework composed of carbon nanotubes and carbon nanosheets . This Co−C−N can be used as efficient electrocatalysts for flexible Zn−air battery.…”

Section: M−c−n Nanocrystals For Electrocatalysis and Energy Storage Smentioning

confidence: 99%

Transition Metal (Fe, Co and Ni)−Carbide−Nitride (M−C−N) Nanocatalysts: Structure and Electrocatalytic Applications

et al. 2019

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Transition metal−carbon−nitrogen (M−C−N) nanocrystals, such as hybrid‐structure, heterostructure, and cluster or single metal atoms anchored on carbon−nitrogen skeleton, have attracted wide attention in various fields for their superior physicochemical properties. However, it remains a great challenge to synthesize those M−C−N nanocrystals on a large nanoscale for their intrinsic characteristics, which further limited their extensive application in different fields. In this minireview, we present an overview of those M−C−N nanostructures in terms of their synthetic methods, applications and relationship between structure and properties. In addition, this review will also provide some perspectives on the challenges and opportunities of those nanomaterials.

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Strongly coupled Co, N co-doped carbon nanotubes/graphene-like carbon nanosheets as efficient oxygen reduction electrocatalysts for primary Zinc-air battery

Cited by 91 publications

References 59 publications

Direct growth of ordered N‐doped carbon nanotube arrays on carbon fiber cloth as a free‐standing and binder‐free air electrode for flexible quasi‐solid‐state rechargeable Zn‐Air batteries

Direct growth of ordered N‐doped carbon nanotube arrays on carbon fiber cloth as a free‐standing and binder‐free air electrode for flexible quasi‐solid‐state rechargeable Zn‐Air batteries

Orange Peel Derived‐Nitrogen and Sulfur Co‐doped Carbon Dots: a Nano‐booster for Enhancing ORR Electrocatalytic Performance of 3D Graphene Networks

Transition Metal (Fe, Co and Ni)−Carbide−Nitride (M−C−N) Nanocatalysts: Structure and Electrocatalytic Applications

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