Potassium-ion batteries: outlook on present and future technologies

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(4), P. 2186 - 2243

Published: Jan. 1, 2021

The limited resources and uneven distribution of lithium stimulate strong motivation to develop new rechargeable potassium-ion batteries that use alternative charge carriers.

Language: Английский

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3D MXene Architectures for Efficient Energy Storage and Conversion

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 30(47)

Published: June 2, 2020

Abstract 2D transition metal carbides and/or nitrides (MXenes), by virtue of high electrical conductivity, abundant surface functional groups and excellent dispersion in various solvents, are attracting increasing attention showing competitive performance energy storage conversion applications. However, like other materials, MXene nanosheets incline to stack together via van der Waals interactions, which lead limited number active sites, sluggish ionic kinetics, finally ordinary materials/devices. Constructing into 3D architectures has been proven be an effective strategy reduce restacking, thus providing larger specific area, higher porosity, shorter ion mass transport distance over normal 1D structures. In this review, the commonly used strategies for manufacturing (3D MXenes MXene‐based composites) summarized, such as template, assembly, printing, methods. Special is also given structure–property relationships their applications electrochemical conversion, including supercapacitors, rechargeable batteries, electrocatalysis. Finally, authors propose a brief perspective on future opportunities challenges architectures/devices.

Language: Английский

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Molecular grafting towards high-fraction active nanodots implanted in N-doped carbon for sodium dual-ion batteries

National Science Review, Journal Year: 2020, Volume and Issue: unknown

Published: Aug. 5, 2020

Abstract Sodium-based dual-ion batteries (Na-DIBs) show a promising potential for large-scale energy storage applications due to the merits of environmental friendliness and low cost. However, Na-DIBs are generally subject poor rate capability cycling stability lack suitable anodes accommodate large Na+ ions. Herein, we propose molecular grafting strategy in situ synthesize tin pyrophosphate nanodots implanted N-doped carbon matrix (SnP2O7@N-C), which exhibits high fraction active SnP2O7 up 95.6 wt% content (4.4 wt%) as conductive framework. As result, this anode delivers specific capacity ∼400 mAh g−1 at 0.1 A g−1, excellent 5.0 with retention 92% after 1200 cycles under current density 1.5 g−1. Further, pairing an environmentally friendly KS6 graphite cathode yields SnP2O7@N-C||KS6 Na-DIB, exhibiting 30 C, good fast-charge/slow-discharge performance long-term life ∼96% 1000 20 C. This study provides feasible develop high-performance high-fraction materials Na-based applications.

Language: Английский

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Recent Advances and Promise of MXene‐Based Nanostructures for High‐Performance Metal Ion Batteries

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 30(47)

Published: April 22, 2020

Abstract MXenes, a large family of 2D transition metal carbides or carbonitrides, possessing exceptional conductivity in the crystal core and ample functional groups (e.g., OH, F, O) on their surface, low energy barriers for ion diffusion, interlayer spaces intercalation, are opening up various intriguing opportunities to construct advanced MXene‐based nanostructures different‐type batteries (MIBs) with remarkable density power density. Herein, this work summarizes recent advances high‐performance MIBs from lithium non‐lithium (Na + , K Mg 2+ Zn Ca ) batteries, which unique roles MXenes as active materials, conductive substrates, even current collectors highlighted. Furthermore, loaded model, encapsulated sandwiched model clarified detail hybrids different dimensional (0D, 1D, 2D) each structural is well exampled special emphasis synergistic effects strong interaction interfaces between MXene materials. Finally, existing challenges perspectives briefly discussed MIBs.

Language: Английский

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The Assembly of MXenes from 2D to 3D

Advanced Science, Journal Year: 2020, Volume and Issue: 7(7)

Published: Feb. 13, 2020

Since their discovery in 2011, transition metal carbides or nitrides (MXenes) have attracted a wide range of attention due to unique properties and promise for use variety applications. However, the low accessible surface area poor processability MXene nanosheets caused by restacking severely hindered practical use, this is expected be solved integrating them into macroscopic assemblies. Here, recent progress construction assemblies from 2D 3D at macro and/or microlevel summarized. The mechanisms assembly are also discussed better understand relationship between performance assembled structure. possible uses energy conversion storage, electromagnetic interference shielding absorption, other applications

Language: Английский

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Perspectives on solution processing of two-dimensional MXenes

Materials Today, Journal Year: 2021, Volume and Issue: 48, P. 214 - 240

Published: March 18, 2021

Since the discovery of two-dimensional (2D) transition metal carbides and nitrides, known as MXenes, research on these wonder 2D inorganic compounds has become increasingly intensified with their members quickly expanding. MXenes' state-of-the-art applications are heavily dependent processing strategies manufacturing methods. Nevertheless, solution MXenes not been comprehensively reviewed. This review summarizes progress regarding over past decade well outlines key perspectives for future scalable strategies. Etching MAX phases delamination MXene briefly introduced. Rheological properties dispersions wetting inks, which crucial achievement high-resolution printing homogeneous coating, discussed in detail. We have ink formulation fine-tuning to match that targeted substrates yield efficient yet high-quality printed/coated films/structures. As such, we demonstrate a "map guidelines" solution-based toward high-performance applications, such electrochemical energy storage, conductive electrodes, electromagnetic interference shielding, so on.

Language: Английский

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MXenes for Non‐Lithium‐Ion (Na, K, Ca, Mg, and Al) Batteries and Supercapacitors

Advanced Energy Materials, Journal Year: 2020, Volume and Issue: 11(2)

Published: June 15, 2020

Abstract The 2019 Nobel Prize in Chemistry for lithium‐ion batteries is a powerful confirmation of the importance portable energy storage devices, which will further promote collaborative innovation field new storage. Non‐lithium rechargeable technologies are attracting attention due to their low cost and high densities. However, electrochemical performance depends upon inherent properties electrodes. In recent decades, 2D materials have been extensively investigated owing unique physical chemical properties. One typical representatives MXenes with good properties, become popular material years. discovery MXene metal solution, expanded interlayer‐spacing tamperable surface termination offers valuable strategy discover structures. These flexible allow tuning technologies. Here, synthesis, structure, applications non‐lithium reviewed, comprehensive outlook personal perspective on future development system also presented.

Language: Английский

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Interface Chemistry on MXene‐Based Materials for Enhanced Energy Storage and Conversion Performance

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 30(50)

Published: Sept. 9, 2020

Abstract MXenes have attracted increasing attention due to their unique advantages, excellent electronic conductivity, tunable layer structure, and controllable interfacial chemistry. However, the practical applications of in energy storage devices are severely limited by issues torpid reaction kinetics, active sites, poor material utilization efficiency. Herein, most‐up‐to date advances rational microstructure design enhance electrochemical kinetics performance MXene‐based materials comprehensively summarized. This review begins with preparation properties MXenes, classified into fluorine‐containing acid etching fluoride‐free approaches. Afterwards, interlayer structure functionalization respect spacing porous terminal groups, surface defects Then focus turns construction advanced heterojunctions based on situ derivation self‐assembly. Based these modulating strategies, state‐of‐the‐art progress supercapacitors, alkali metal‐ion batteries, metal–sulfur photo/electrocatalysis highlighted. Finally, critical challenges perspectives for future research 2D nanostructures highlighted, aiming present a comprehensive reference electrodes storage.

Language: Английский

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Prioritizing Hetero‐Metallic Interfaces via Thermodynamics Inertia and Kinetics Zincophilia Metrics for Tough Zn‐Based Aqueous Batteries

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(17)

Published: Feb. 14, 2023

Poor thermodynamic stability and sluggish electrochemical kinetics of metallic Zn anode in aqueous solution greatly hamper its practical application. To solve such problems, to date, various zincophilic surface modification strategies are developed, which can facilitate reversible plating/stripping behavior. However, there is still a lack systematic fundamental understanding regarding the metrics thermodynamics inertia zincophilia selecting sites. Herein, hetero-metallic interfaces prioritized for first time via optimizing different hetero metals (Fe, Co, Ni, Sn, Bi, Cu, Zn, etc.) synthetic solvents (ethanol, ethylene glycol, n-propanol, etc.). Specifically, both theoretical simulations experimental results suggest that this Bi@Zn interface exhibit high efficiency owing zincophilia. A best practice prioritizing sites more metric also proposed. As proof concept, delivers ultralow overpotential ≈55 mV at rate 10 mA cm-2 stable cycle life over 4700 cycles. The elaborated "thermodynamics metalphilia" benchmark success other metal-based batteries.

Language: Английский

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Progress and Perspective: MXene and MXene‐Based Nanomaterials for High‐Performance Energy Storage Devices

Advanced Electronic Materials, Journal Year: 2021, Volume and Issue: 7(7)

Published: Jan. 22, 2021

Abstract MXene, an emerging family of 2D transition metal carbides/nitride (MXene) materials, has attracted growing attention since its initial discovery in 2011. Owing to their extraordinary electrical conductivity, high mechanical stability, various functional groups, and large interlayer space, MXene MXene‐based nanomaterials have shown significant energy‐storage capability. Firstly, research progress on the preparation strategies properties are summarized. Secondly, current state‐of‐the‐art advances as advanced electrodes for energy storage devices, including lithium‐ion batteries, sodium‐ion potassium‐ion supercapacitors reviewed. Finally, key challenges perspectives further enhancing electrochemical performances also outlined. This Progress Report offers a reference scientific inspiration design high‐performance meet increasing need next‐generation systems.

Language: Английский

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