3D Porous Nb<sub>2</sub>C MXene/reduced graphene oxide aerogel coupled with NiFe alloy nanoparticles for wearable Zn–air batteries

Lei, Hang; Yang, Shangjing; Lei, Runquan; Zhong, Qing; Wan, Qixiang; Li, Zhibin; Ma, Liang; Tan, Shaozao; Wang, Zilong; Mai, Wenjie

doi:10.1039/d1qm00885d

Cited by 15 publications

(9 citation statements)

References 46 publications

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“…From the DFT analysis, they observed that there is no significant change in the 2D structure of the MXene even after doping with foreign atoms. Lei et al have prepared the Nb 2 CT x MXene with an accordion-like multilayer morphology from its Nb 2 AlC MAX phase using the HF-etching procedure. The as-synthesized Nb 2 CT x MXene was further used to prepare a 3D porous network constituting a graphene oxide (GO) aerogel and NiFe alloy nanoparticles and further used as a cathode material in fabricating wearable Zn–air batteries .…”

Section: Synthesis Of Nb2ct X Mxenementioning

confidence: 99%

A Review of Nb₂CT_x MXene as an Emerging 2D Material: Synthesis, Applications in Rechargeable Batteries and Supercapacitors, Progress, and Outlook

Thomas¹,

Cherusseri

2023

Energy Fuels

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Layered two-dimensional (2D) transition metal nitrides/carbides/carbonitrides are collectively known as MXenes. MXenes are the most explored candidates in the family of 2D materials due to their extraordinary physicochemical properties, which have proved to be beneficial for multifunctional applications, most likely in electrochemical energy storage, energy generation, sensing, photocatalysis, etc. In the MXene family, niobium carbide (Nb2CT x ) is an emerging novel member finding suitable applications due to its unique properties, although a smaller number of research studies have been conducted on this particular MXene to date and are still in their infancy. The Nb2CT x MXene has attracted great scientific attention among the various available non-titanium-based MXenes. A detailed review on the peculiar characteristics and prominent energy applications of this novel 2D material is lacking in the literature. This has motivated us to present a review article that provides an outline on the synthesis and exemplary energy applications of Nb2CT x MXene based materials, particularly for rechargeable batteries and supercapacitors. A brief description of the crystal structure and properties of the Nb2CT x MXene is included. By understanding the physics and chemistry of the Nb2CT x MXene, the properties can be tailored suitable for specific applications. This review proclaims that Nb2CT x MXene based materials can be a future efficient electrode material for rechargeable batteries and supercapacitors.

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Section: Synthesis Of Nb2ct X Mxenementioning

confidence: 99%

A Review of Nb₂CT_x MXene as an Emerging 2D Material: Synthesis, Applications in Rechargeable Batteries and Supercapacitors, Progress, and Outlook

Thomas¹,

Cherusseri

2023

Energy Fuels

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“…Thus far, MXene‐based aerogels have shown great potential for the use in a variety of Li–S batteries, while also contributing to remarkable mechanical stability in many other types of sulfur‐containing batteries; for example, MXene‐based aerogels have been employed as sulfur hosts for application at room temperature Na‐S batteries. [ 165 ] In addition, on account of their high porosity and abundant channels, MXene‐based aerogels have also been applied in zinc‐air batteries, [ 166 ] alkali ion batteries, [ 167 ] potassium ion batteries, [ 168 ] sodium ion batteries, [ 169 ] zinc ion batteries, [ 170 ] etc., which facilitate the increase in the number of active sites promoting electrolyte diffusion and electron transfer within the advanced battery technology.…”

Section: Performance and Application Of Mxene‐based Aerogelsmentioning

confidence: 99%

Recent Advances in MXene‐Based Aerogels: Fabrication, Performance and Application

Wei

Zhang

Wang

et al. 2022

Adv Funct Materials

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As one of the “miracle materials” in the 21st century, aerogels with ultra‐low weight and remarkable mechanical performance have emerged and shown incredible immunity to harsh working environments, attracting substantial research interests across a wide range of areas. Recently, exploitation of MXene nanosheets into aerogels represents a new research focus in the field of materials science, on account of their unique structures and outstanding properties. In this review, the aim is to provide a timely and insightful overview for the recent advances in the fabrication, performance, and application of MXene‐based aerogels. The main strategies for constructing MXene‐based aerogels, directly from MXene‐dispersion or in the presence of other functional components, are summarized. Furthermore, the desirable performance of MXene‐based aerogels and their related applications in the areas including electromagnetic management, sensors, solar steam generators, and energy storage are highlighted. A thorough investigation and comparison of their mechanical, electrical, sensing, and other properties are performed to understand the structure‐property relationships. At last, this study is concluded with summary and outlook section on the future development as well as challenges that remained, thus bringing new research opportunities for the material engineering and functional application of MXene‐based aerogels.

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“…Li et al confirmed theoretically and experimentally that oxygen-terminated niobium carbide MXene had excellent bifunctional ORR/OER catalytic activity, proving that Nb 2 CO 2 was not only the most stable one among Nb 2 C, Nb 2 CF 2 , and Nb 2 C(OH) 2 but also could stimulate the spatial accumulation of discharge products, which was conducive to improving the stability of secondary batteries . Lei et al utilized the composite of accordion-like Nb 2 C MXene and graphene coupled with NiFe particles in the cathode of ZABs, with high energy density (96.1 mW cm –2 ) and conversion efficiency (62.85%). Therefore, it can be inferred that niobium carbide MXene has great application potential in ZABs.…”

Section: Introductionmentioning

confidence: 99%

Oxygen-Terminated Nb₂CO₂ MXene with Interfacial Self-Assembled COF as a Bifunctional Catalyst for Durable Zinc–Air Batteries

Zong

Liu

et al. 2022

ACS Appl. Mater. Interfaces

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The desirable air cathode in Zn−air batteries (ZABs) that can effectively balance oxygen evolution and oxygen reduction reactions not only needs to adjust the electronic structure of the catalyst but also needs a unique physical structure to cope with the complex gas−liquid environment. In this work, first-principles calculations were carried out to prove that oxygen-terminated Nb 2 CO 2 MXene played an active role in enhancing the sluggish reaction of oxygen intermediates. Nb 2 CO 2 MXene could also stimulate the spatial accumulation of discharge products, which was beneficial to improve the stability of secondary ZABs. Molecular dynamics simulation was used to show that the confinement effect of COF could effectively regulate the concentration of O 2 on the surface of Nb 2 CO 2 @COF, which was conducive to an efficient and durable reaction. COF-LZU1 was self-assembled on the interface of Nb 2 CO 2 MXene (Nb 2 CO 2 @COF) for the first time. The Nb 2 CO 2 @COF electrode had excellent OER/ORR overpotentials with the potential difference (ΔE) of 0.79 V. When applied to the configuration of ZABs, Nb 2 CO 2 @COF showed a power density of 75 mW cm −2 and favorable long-term charge/discharge stability, so it could be used as a potential candidate cathode for noble-metal-based catalysts. This idea of combining MXenes and COFs sheds some light on the design of ZABs.

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3D Porous Nb₂C MXene/reduced graphene oxide aerogel coupled with NiFe alloy nanoparticles for wearable Zn–air batteries

Abstract: Insufficient catalytic activity and self-restacking of 2D MXenes during catalytic processes would lead to limited number of active sites, sluggish ionic kinetics and poor durability, extremely restricting its application in...

Cited by 15 publications

References 46 publications

A Review of Nb₂CT_x MXene as an Emerging 2D Material: Synthesis, Applications in Rechargeable Batteries and Supercapacitors, Progress, and Outlook

A Review of Nb₂CT_x MXene as an Emerging 2D Material: Synthesis, Applications in Rechargeable Batteries and Supercapacitors, Progress, and Outlook

Recent Advances in MXene‐Based Aerogels: Fabrication, Performance and Application

Oxygen-Terminated Nb₂CO₂ MXene with Interfacial Self-Assembled COF as a Bifunctional Catalyst for Durable Zinc–Air Batteries

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3D Porous Nb2C MXene/reduced graphene oxide aerogel coupled with NiFe alloy nanoparticles for wearable Zn–air batteries

Abstract: Insufficient catalytic activity and self-restacking of 2D MXenes during catalytic processes would lead to limited number of active sites, sluggish ionic kinetics and poor durability, extremely restricting its application in...

Cited by 15 publications

References 46 publications

A Review of Nb2CTx MXene as an Emerging 2D Material: Synthesis, Applications in Rechargeable Batteries and Supercapacitors, Progress, and Outlook

A Review of Nb2CTx MXene as an Emerging 2D Material: Synthesis, Applications in Rechargeable Batteries and Supercapacitors, Progress, and Outlook

Recent Advances in MXene‐Based Aerogels: Fabrication, Performance and Application

Oxygen-Terminated Nb2CO2 MXene with Interfacial Self-Assembled COF as a Bifunctional Catalyst for Durable Zinc–Air Batteries

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3D Porous Nb₂C MXene/reduced graphene oxide aerogel coupled with NiFe alloy nanoparticles for wearable Zn–air batteries

A Review of Nb₂CT_x MXene as an Emerging 2D Material: Synthesis, Applications in Rechargeable Batteries and Supercapacitors, Progress, and Outlook

A Review of Nb₂CT_x MXene as an Emerging 2D Material: Synthesis, Applications in Rechargeable Batteries and Supercapacitors, Progress, and Outlook

Oxygen-Terminated Nb₂CO₂ MXene with Interfacial Self-Assembled COF as a Bifunctional Catalyst for Durable Zinc–Air Batteries