Vertically pillared V2CTx/Ti3C2Tx flexible films for high-performance supercapacitors

Article Engineering, Environmental

Ti3C2Tx/carbon nanotube/porous carbon film for flexible supercapacitor

Kai Yang et al.

Summary: By introducing carbon nanotubes to construct a highly conductive network structure, the Ti3C2Tx/CNT/PC (TCP) film has improved electron transfer efficiency and high specific capacitance, while enhancing flexibility.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Physical

High density anchoring of NiMoS4 on ultrathin Ti3C2 MXene assisted by dopamine for supercapacitor electrode materials

Jie Xu et al.

Summary: In this study, ultrathin Ti3C2 MXenes doped with a high density of NiMoS4 nanoparticles with the assistance of dopamine (DA) formed a Ti3C2-DA-NiMoS4 heterostructure, increasing the exposure of NiMoS4 active sites and reducing the decrease in specific capacitance. The resulting material exhibited excellent electrochemical performance, making it a prospective candidate for high-performance supercapacitors.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

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Article Chemistry, Physical

N-doped interconnected porous graphene as advanced electrode material for supercapacitors

Pan Li et al.

Summary: Developing low-cost and highly effective electrode materials is crucial for advanced supercapacitors. In this study, N-doped graphene with a hierarchical porous structure was prepared, exhibiting a large specific surface area, high total pore volume, and improved supercapacitive behavior due to increased hydrophilicity and additional pseudo-capacitance. The optimal graphene material showed superior capacitance and energy density in a three-electrode device configuration, with promising potentials in the field of high-performance electric energy storage devices.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

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Article Engineering, Environmental

Al-doped Co9S8 encapsulated by nitrogen-doped graphene for solid-state asymmetric supercapacitors

Emad S. Goda et al.

Summary: The core-shell structured material fabricated from aluminum-doped cobalt sulfide, encapsulated by nitrogen-doped graphene, showed promising supercapacitive features as a cathode material for solid-state asymmetrical supercapacitor devices. The material exhibited high specific capacity, long cycle life stability, and remarkable retention rate, making it a potential candidate for efficient energy storage electrodes in industrial applications.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Physical

Novel electrodes for supercapacitor: Conducting polymers, metal oxides, chalcogenides, carbides, nitrides, MXenes, and their composites with graphene

Navajsharif S. Shaikh et al.

Summary: High energy density supercapacitors are needed for recent electronic appliances and hybrid vehicles, which can be achieved by designing proper electrode materials and electrolytes. This review discusses different energy storage mechanisms, engineering of electrode materials, and investigation of hybrid electrodes, showing great potential for commercial usage.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

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Article Chemistry, Physical

Superior pseudocapacitive performance and mechanism of self-assembled MnO2/MXene films as positive electrodes for flexible supercapacitors

Zhiquan He et al.

Summary: A hybrid MnO2/Ti3C2Tx cathode was fabricated using a simple filtration method, which showed higher electrochemical stability and excellent capacitance performance compared to pure Ti3C2Tx. The improved performance was mainly attributed to the charge transfer-induced work function enlargement at the Ti3C2Tx and MnO2 heterointerface. This work provides new insights for designing high-performance MXene-based cathode materials and devices for wearable electronics.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

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Article Chemistry, Physical

Hierarchical design of Ni3S2@Co9S8 nanotubes for supercapacitors with long cycle-life and high energy density

Yifeng Lin et al.

Summary: Hollow hierarchical Ni3S2@Co9S8 (NiS@CoS) nanotubes are designed with a one-pot strategy, demonstrating a high active area. The NiS@CoS nanotubes exhibit promising electrochemical energy storage characteristics with high areal specific capacitance, excellent cycling stability, and an ultrahigh energy density in a hybrid supercapacitor configuration.

JOURNAL OF ALLOYS AND COMPOUNDS (2022)

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Article Chemistry, Physical

Sr- and Fe-substituted LaMnO3 Perovskite: Fundamental insight and possible use in asymmetric hybrid supercapacitor

P. Muhammed Shafi et al.

Summary: The symmetry and conductivity of perovskite oxides are greatly influenced by the size and valence states of cations. By substituting La3+ with Sr2+ and Mn3+ with Fe3+, the crystal symmetry and ionic-electronic conductivity of the perovskite can be improved. The use of carbon nano-onions as a negative electrode in an asymmetric hybrid supercapacitor greatly enhances its rate capability. Tuning the conductivities and using appropriate carbon-derived negative electrodes can pave the way for high-rate hybrid devices using different perovskites.

ENERGY STORAGE MATERIALS (2022)

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Article Nanoscience & Nanotechnology

Temperature-Invariant Superelastic Multifunctional MXene Aerogels for High-Performance Photoresponsive Supercapacitors and Wearable Strain Sensors

Chenyang Cai et al.

Summary: By utilizing freeze-induced co-assembly, MXene nanosheets are assembled into structurally robust three-dimensional macroarchitectures with temperature-invariant elasticity, enabling the fabrication of biomimetic aerogel electrodes with excellent electrochemical performance and cycling ability. These aerogels can also be used in wearable electronic devices for monitoring a variety of human motions.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Review Engineering, Environmental

0D to 3D carbon-based networks combined with pseudocapacitive electrode material for high energy density supercapacitor: A review

Sachin Kumar et al.

Summary: Supercapacitors are reliable energy storage devices, but face limitations such as low capacitance and energy density. Carbon based nanocomposites have been extensively studied for their excellent properties. Developing high energy density supercapacitor devices remains a challenge despite advancements in research.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Chemistry, Physical

Oxidized-co-crumpled multiscale porous architectures of MXene for high performance supercapacitors

Jeong Bok Lee et al.

Summary: This study presents a novel method to create oxidized-co-crumpled multiscale porous architectures of MXene, leading to significantly improved specific surface area, capacitance performance, and cycle stability. The structural advantages of the multiscale porous oxidized-co-crumpled MXene result in enhanced ion diffusion and prevent re-stacking, demonstrating a promising strategy for high-performance MXene-based electrode materials in various electrochemical applications.

JOURNAL OF ALLOYS AND COMPOUNDS (2021)

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Article Chemistry, Multidisciplinary

Flexible Free-Standing MoO3/Ti3C2Tz MXene Composite Films with High Gravimetric and Volumetric Capacities

Wei Zheng et al.

Summary: The study on MoO3/Ti3C2Tz films demonstrates superior energy storage and power capabilities, laying the foundation for practical applications.

ADVANCED SCIENCE (2021)

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Article Chemistry, Multidisciplinary

MXene-Graphene Field-Effect Transistor Sensing of Influenza Virus and SARS-CoV-2

Yanxiao Li et al.

Summary: The developed MXene-graphene sensor on the FET platform enables sensitive detection of viruses with low cost, ultra-sensitivity, fast response, and specificity. By integrating the high-sensitivity VSTM into a microfluidic channel, viruses in solution can be directly received for high detection sensitivity and quick response time.

ACS OMEGA (2021)

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Article Chemistry, Physical

Mixed MXenes: Mo1.33CTz and Ti3C2Tz freestanding composite films for energy storage

Ahmed S. Etman et al.

Summary: MXenes are a class of 2D materials with outstanding properties such as high electronic conductivity, hydrophilicity, and high specific capacitance. By fabricating composite films based on Mo1.33CTz and Ti3C2Tz MXenes, superior flexibility, electronic conductivity, and capacitance can be achieved. This work explores new possibilities for using composite MXene materials with double transition metals (Mo and Ti) in energy storage devices.

NANO ENERGY (2021)

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Article Chemistry, Physical

2D titanium and vanadium carbide MXene heterostructures for electrochemical energy storage

Armin VahidMohammadi et al.

Summary: Two-dimensional heterostructured electrodes, constructed from stacking different 2D materials vertically, show high volumetric capacitance and stable electrochemical performance. The assembly of Ti3C2Tx and V2CTx in liquid phase without binders allows for consistent current throughout the potential window due to the coupling of redox reactions between the two materials.

ENERGY STORAGE MATERIALS (2021)

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Article Nanoscience & Nanotechnology

Amine-Assisted Delaminated 2D Ti3C2Tx MXenes for High Specific Capacitance in Neutral Aqueous Electrolytes

Shan Ren et al.

Summary: Electrochemical capacitors with neutral aqueous electrolytes are safer and more cost-effective than those with organic or acidic/alkaline electrolytes, and allow for a wider range of current collectors. Two-dimensional MXenes have been found to be high-capacitive materials with excellent rate performance. The synthesis of 2D Ti3C2Tx MXenes, through a combination of HF etching and amine-assisted delamination, has been shown to significantly improve capacitive performance in neutral electrolytes.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Review Chemistry, Inorganic & Nuclear

Recent advances and challenges of electrode materials for flexible supercapacitors

Yong Zhang et al.

Summary: Flexible supercapacitors, integrated into textiles, have shown great potential in real-time health monitoring due to their simple production process, low cost, and superior performance. Current research focuses on the synthesis and performance of various flexible substrates, as well as discussing future development trends and challenges in practical applications.

COORDINATION CHEMISTRY REVIEWS (2021)

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Article Materials Science, Multidisciplinary