Boosting the alkali metal ions storage performance of layered Nb2C with a molecular welding strategy

Renewable energy storage using electrochemical storage devices is extensively used in various field applications. High‐power density supercapacitors and high‐energy density rechargeable batteries are some of the most effective devices, while lithium‐ion batteries (LIBs) are the most common. Due to the scarcity of Li resources and serious safety concerns during the construction of LIBs, development of safer and cheaper technologies with high performance is warranted. Magnesium is one of the most abundant and replaceable elements on earth, and it is safe as it does not generate dendrite following cycling. However, the lack of suitable electrode materials remains a critical issue in developing electrochemical energy storage devices. 2D MXenes can be used to construct composites with different dimensions, owing to their suitable physicochemical properties and unique magnesium‐ion adsorption structure. In this study, the construction strategies of MXene in different dimensions, including its physicochemical properties as an electrode material in magnesium ion energy storage devices are reviewed. Research advancements of MXene and MXene‐based composites in various kinds of magnesium‐ion storage devices are also analyzed to understand its energy storage mechanisms. Finally, current opportunities, challenges, and future prospects are also briefly discussed to provide crucial information for future research.

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“…Hence, this suppresses the severe volume changes during cycling, which provides a new approach to enhance alkali metal ion storage. [ 87 ]…”

Section: Propertiesmentioning

confidence: 99%

Review of Design Routines of MXene Materials for Magnesium‐Ion Energy Storage Device

Zhang

Yuan

Zhao

et al. 2023

Small

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“…Successfully prepared MXene due to their excellent electrical conductivities, good hydrophilicity, substantial specific surface areas, tunable layer spacings, and surface functional groups. They are widely researched for applications in energy storage and conversion, sensors, optoelectronic and optical devices, electromagnetic shielding and environmental remediation, and many other areas [1][2][3][4][5]. The performance of MXene in sensing is exciting due to their excellent properties and specific responses to toxic and hazardous gases or volatile organic compounds (VOCs).…”

Section: Introductionmentioning

confidence: 99%

Room-temperature highly sensitive triethylamine detection by few-layer Nb₂CT_x MXene nanosheets

Wang,

Yao,

Xin

et al. 2024

Nanotechnology

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MXene, a class of two-dimensional materials that are emerging as rising stars in the field of materials, are receiving much attention in sensing. Ti3C2Tx MXene, the most maturely researched MXene, is widely used in energy, biomedical, laser, and microwave shielding applications and has also been expanded to gas sensing and wearable electronics applications. Compared with Ti3C2Tx, Nb2CTx MXene is more difficult to etch and has higher resistances at room temperature; so, few studies have been reported on their use in the sensing field. Based on the preparation of few-layer Nb2CTx MXene by intercalation, this study thoroughly examined their gas-sensing properties. The successfully prepared few-layer Nb2CTx showed good selectivity and high sensitivity to triethylamine at room temperature, with response values up to 47.2% for 50-ppm triethylamine and short response/recovery time (22/20 s). This study opens an important path for the design of novel Nb-based MXene sensors for triethylamine gas detection.

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“…In recent years, electronic products have been integrated into most people’s everyday lives, so the development of renewable and sustainable energy storage systems is necessary. − Aqueous Zn-ion batteries (AZIBs) have gradually received increasing worldwide attention due to straightforward processing, high safety, and environmental friendliness . At present, a number of cathode materials for AZIBs have been developed, including manganese-based compounds, vanadium-based compounds, Prussian blue analogous, and some other materials .…”

Section: Introductionmentioning

confidence: 99%

KOH-Induced Oxygen-Deficient VO₂ for High-Rate Aqueous Zn-Ion Batteries

Yang

Shen

Yang

et al. 2023

ACS Appl. Energy Mater.

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Due to its high safety and low cost, aqueous Zn-ion batteries (AZIBs) have become one of the most promising energy storage devices. However, the development of a stable cathode with fast kinetics and high-energy density is crucial to realize AZIBs for large-scale application. In this work, KOH-induced oxygen-deficient VO2 (K-VO2) was developed by activating doughnutlike VO2 by KOH. Benefiting from the combination of a unique morphology with abundant active sites and the oxygen vacancy, increasing the interlayer spacing, both improved kinetics and enhanced Zn-ion storage capability in the VO2 cathode are achieved. The optimized K-VO2-3:4 delivers a specific capacity of 260.9 mA h g–1 at 0.2 A g–1, an excellent high-rate capability of 166.1 mA h g–1 at 5 A g–1, and long-term cyclic stability with a capacity retention of 88.1% after 3000 cycles. The electrochemical performance of K-VO2-3:4 has been greatly improved compared with untreated VO2. The KOH activation strategy proposed here also presents an encouraging pathway for developing other high-energy and stable cathodes.

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Boosting the alkali metal ions storage performance of layered Nb2C with a molecular welding strategy

Cited by 20 publications

References 39 publications

Review of Design Routines of MXene Materials for Magnesium‐Ion Energy Storage Device

Review of Design Routines of MXene Materials for Magnesium‐Ion Energy Storage Device

Room-temperature highly sensitive triethylamine detection by few-layer Nb₂CT_x MXene nanosheets

KOH-Induced Oxygen-Deficient VO₂ for High-Rate Aqueous Zn-Ion Batteries

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Boosting the alkali metal ions storage performance of layered Nb2C with a molecular welding strategy

Cited by 20 publications

References 39 publications

Review of Design Routines of MXene Materials for Magnesium‐Ion Energy Storage Device

Review of Design Routines of MXene Materials for Magnesium‐Ion Energy Storage Device

Room-temperature highly sensitive triethylamine detection by few-layer Nb2CT x MXene nanosheets

KOH-Induced Oxygen-Deficient VO2 for High-Rate Aqueous Zn-Ion Batteries

Contact Info

Product

Resources

About

Room-temperature highly sensitive triethylamine detection by few-layer Nb₂CT_x MXene nanosheets

KOH-Induced Oxygen-Deficient VO₂ for High-Rate Aqueous Zn-Ion Batteries