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Article
Materials Science, Ceramics
Ryan Andris et al.
Summary: Chemically preintercalated dopamine (DOPA) molecules were used as both a reducing agent and carbon precursor to prepare various nanocomposites through hydrothermal treatment or hydrothermal treatment followed by annealing. The phase composition and morphology of the composites were influenced by the DOPA:V2O5 ratio. The synthesized nanocomposites exhibited high electrochemical charge storage properties in Li-ion cells.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Mohit Saraf et al.
Summary: By inserting partially solvated cations into Ti3C2 MXene from lithium-based water-in-salt (WIS) electrolytes, alpha-MoO3/Ti3C2 hybrids exhibit high capacity and conductivity in a wider potential window. Moreover, MXene encapsulated alpha-MoO3 shows improved electrochemical stability due to the suppressed dissolution of alpha-MoO3. This work suggests that oxide/MXene hybrids are promising for energy storage.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Ekaterina Pomerantseva
Summary: The use of electrical plants and grids for power generation and transmission requires an effective mechanism for energy storage. This can be achieved through the use of electrical energy storage devices such as batteries and supercapacitors. Rational design of new materials on an atomic level, including chemical composition, structure, morphology, and heterointerfaces, is crucial for developing batteries with improved performance for specific applications. A synthesis strategy called the chemical preintercalation synthesis approach is introduced in this Account, which allows for the preparation of new intercalation host oxides, hybrid materials, and compounds with oxide/carbon heterointerfaces as electrodes in intercalation batteries. The approach allows for the control of material properties at the atomic level and opens pathways for the preparation of materials with advanced functionalities.
ACCOUNTS OF CHEMICAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Boya Sun et al.
Summary: This study reports on the construction of redox-active phosphorus-oxygen terminals as an attractive strategy to significantly enhance the specific capacities of Nb4C3 MXenes for ultrafast Na+ storage. The molecular-level design of MXene terminals provides opportunities for developing high-capacity and fast-charging electrodes, alleviating the energy-power tradeoff typical for energy-storage devices.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Kyle Matthews et al.
Summary: This paper reports on the mild synthesis and improved shelf life of Vanadium carbide MXene V2CTx, with ion exchange and flocculation processes allowing for its suspension in water for several months without degradation. The electronic and optical properties of the MXene have shown significant improvements, expanding its potential applications and allowing for fundamental studies of its properties.
CHEMISTRY OF MATERIALS
(2022)
Article
Multidisciplinary Sciences
Yuanyuan Zhu et al.
Summary: High-voltage aqueous MXene symmetric planar micro-supercapacitors with a record operating voltage of 1.6V and a wide temperature range of -40°C to 60°C were developed. The regulation of reaction kinetics in 2D Ti3C2Tx MXene microelectrodes using a water-in-LiCl salt gel electrolyte enabled the fabrication of high-voltage MXene-MSCs. The intrinsic energy-storage mechanism of MXene microelectrodes in the water-in-LiCl electrolyte was revealed, expanding the voltage window of MXene-MSCs. These MXene-MSCs exhibited a record operating voltage of 1.6V and a volumetric energy density of 31.7mWh cm(-3), and could operate for a long duration in a wide temperature range of -40°C to 60°C, demonstrating practicality in extreme environments.
NATIONAL SCIENCE REVIEW
(2022)
Article
Chemistry, Physical
Timofey Averianov et al.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jiabin Wu et al.
Summary: An asymmetric pseudocapacitor was constructed using Ti3C2Tx MXene as the negative electrode and vanadium-doped MnO2 as the positive electrode in a neutral 1M Li2SO4 electrolyte, operating within a 2.1 V voltage window and achieving a maximum energy density of 46 Wh/kg. This study demonstrates the potential of using MXene electrodes to expand the working voltage window of traditional redox-capable materials.
Article
Chemistry, Physical
Wei Zheng et al.
Summary: i-MXenes, a new family of 2D transition metal carbides, show high potential for aqueous supercapacitor applications due to their high volumetric capacitances and energy densities, but the presence of vacancies results in higher self-discharge rates.
JOURNAL OF POWER SOURCES
(2022)
Review
Chemistry, Multidisciplinary
Xinliang Li et al.
Summary: The diverse and tunable surface and bulk chemistry of MXenes have valuable and distinctive properties that can be utilized in various components of energy storage devices such as electrodes, electrolytes, and separators. They enhance stability and performance through ion storage, transfer regulation, steric hindrance, and electrocatalytic functions.
NATURE REVIEWS CHEMISTRY
(2022)
Review
Chemistry, Multidisciplinary
Chao Zheng et al.
Summary: This review examines the applications of MXenes and their derivatives in the field of energy, and discusses the methods of functionalization and structural engineering. These approaches can improve the performance and cycle life of battery materials, and provide directions for the development of next-generation high-power and low-cost batteries.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yu Shi et al.
Summary: This study investigates the catalytic activity and stability of bare MXene, oxygen-functionalized MXene, and single-atom modified MXene in the carbon dioxide reduction reaction (CRR) and carbon dioxide evolution reaction (CER). The results show that single-atom modified MXene exhibits high catalytic activity and has the potential to be used as a bifunctional cathode catalyst in Li-CO2 batteries.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Jieduo Guan et al.
Summary: This study presents a new cathode material for aqueous zinc ion batteries (ZIBs) based on Mg2+ pre-intercalated V2O5·nH2O nanobelts derived from conductive V4C3 MXenes. The material exhibits high reversible capacity, ultra-long cycling stability, and favorable rate performance, attributed to the stable structure, reversible phase transformation, and high pseudocapacitive behavior.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Electrochemistry
Shuangshuang Zhao et al.
Summary: This study reports a method to introduce nanopores in Nb4C3Tx MXene flakes by adjusting the etching time, which improves ion diffusion pathways and enhances its capacitance performance in neutral aqueous electrolytes.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Teng Zhang et al.
Summary: This study reports on the pseudocapacitive performance of two vanadium carbide MXenes in various basic electrolytes and sulfuric acid, showing high capacitance and stable cycle life.
ACS ENERGY LETTERS
(2022)
Article
Public, Environmental & Occupational Health
Christopher E. Shuck et al.
Summary: MXenes are emerging as promising materials in various fields, attracting increasing attention from researchers; ensuring the safe production of MXenes, with a focus on HF-based etching approaches, is crucial; discussing safety risks associated with each step of MXenes synthesis and taking necessary precautions are essential for safe, reproducible, and reliable synthesis.
ACS CHEMICAL HEALTH & SAFETY
(2021)
Article
Chemistry, Multidisciplinary
Ying Liu et al.
Summary: This study presents the use of V2C MXene as a potential cathode material for high energy density ZIBs with superior rate capability. By activating the V2CTx cathode, the surface vanadium valence is significantly increased, forming a nanoscale vanadium oxide coating that undergoes multi-electron reactions effectively. The activated V2CTx demonstrates an ultrahigh rate performance and excellent stability, providing insights into the design of high-performance cathode materials for advanced ZIBs.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Physical
Zhihao Lei et al.
Summary: In order to address the current energy and environmental crisis, it is essential to incorporate new eco-friendly high-performance materials into energy conversion and storage applications. 2D transition metal oxides (TMOs) are considered promising candidates due to their excellent electrochemical properties, although their poor electronic conductivity limits their potential applications. This review explores strategies for enhancing TMOs through surface modification and discusses their synthesis and applications in supercapacitors, lithium ion batteries, and electrocatalysis. Future prospects, challenges, and opportunities for integrating 2D TMOs into energy applications are also discussed.
ENERGY STORAGE MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Han-xin Wei et al.
Summary: With the development of high energy density battery technology, Ni-rich layered transition metal oxide cathode materials, particularly in Li-ion batteries, have attracted attention. However, the inevitable Li/Ni intermixing affects the material performance. This review comprehensively summarizes the reasons for Li/Ni intermixing and its impact on materials, and presents methods for regulating it.
Article
Electrochemistry
Hanyu Dong et al.
Summary: 2D MXenes, especially Nb2CTx MXene prepared by Lewis acidic etching in molten salts, show promising potential as high-rate lithium storage electrodes with a maximum lithium storage capacity of 330 mAh g(-1) at 0.05 A g(-1) and a capacity of 80 mAh g(-1) at 10 A g(-1).
Article
Chemistry, Physical
Likui Wang et al.
Summary: MXenes are promising pseudocapacitive materials with high specific capacitance. This study synthesized two sets of niobium-based solid-solution MXenes and investigated the relationship between their electrochemical properties and the ratio of transition metals in the structure, finding that higher niobium content can improve cycling stability. This research shows that the electrochemical properties of MXenes can be controlled by adjusting the ratio of transition metals in the MXene structure.
Article
Chemistry, Physical
Shuang Yuan et al.
Summary: Transition metal oxides (TMOs) have been recognized as viable electrocatalysts and electrode materials for energy conversion and storage systems due to their high electrochemical activity, low cost, environmental friendliness, safety, and reliability. Modification methods, such as morphology controlling and material composite, can optimize the electrochemical performance of TMOs, while key challenges and perspectives for future research in this field have also been proposed.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xuehang Wang et al.
Summary: The study presents an electrochemical system in 2D Ti3C2Tx MXene in water-in-salt electrolytes, with separated CV peaks and surface-controlled partial charge transfer. This process increases charge storage at positive potentials, offering opportunities for developing high-rate aqueous energy storage devices and electrochemical actuators.
Article
Chemistry, Physical
Yong-Jae Kim et al.
Summary: Understanding the etching mechanisms of MXene and the influence of etchants on structural features and defects are crucial for improving MXene properties. This study visualizes the etching behavior of the Ti3AlC2 MAX phase at the atomic scale and reveals the etching mechanism for the first time. Differences in etching behavior among different etchants were also observed.
CHEMISTRY OF MATERIALS
(2021)
Article
Chemistry, Physical
Wei Zheng et al.
Summary: This study tested an AASC with Ti3C2Tz MXene as the negative electrode and a mixture of manganese oxides as the positive electrode, using a saturated lithium chloride electrolyte. The device demonstrated high energy and power densities, slow self-discharge rates, excellent rate capability, and cycling stability, making it a promising option for environmentally friendly AASCs with commercial mass loadings.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Bilal Ahmed et al.
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Shuangshuang Zhao et al.
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Chemistry, Physical
Youbing Li et al.
Article
Chemistry, Physical
Phillip Ridley et al.
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Nanoscience & Nanotechnology
Aniu Qian et al.
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Chemistry, Physical
Jiang Xu et al.
ENERGY STORAGE MATERIALS
(2020)
Article
Chemistry, Physical
Mallory Clites et al.
ACS APPLIED ENERGY MATERIALS
(2020)
Article
Chemistry, Physical
David Pinto et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Chemistry, Multidisciplinary
Armin VahidMohammadi et al.
ADVANCED MATERIALS
(2019)
Review
Chemistry, Multidisciplinary
Maxim Sokol et al.
TRENDS IN CHEMISTRY
(2019)
Article
Nanoscience & Nanotechnology
Cedric Couly et al.
ADVANCED ELECTRONIC MATERIALS
(2018)
Article
Nanoscience & Nanotechnology
Jian-Gan Wang et al.
ACS APPLIED MATERIALS & INTERFACES
(2018)
Review
Chemistry, Multidisciplinary
Dongbin Xiong et al.
Article
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Qiu Jiang et al.
ADVANCED ENERGY MATERIALS
(2018)
Article
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Mallory Clites et al.
ENERGY STORAGE MATERIALS
(2018)
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N. Batisse et al.
JOURNAL OF POWER SOURCES
(2017)
Article
Chemistry, Physical
Mallory Clites et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2016)
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Qiulong Wei et al.
ACS APPLIED MATERIALS & INTERFACES
(2015)
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Yunlong Zhao et al.
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Qiulong Wei et al.
JOURNAL OF MATERIALS CHEMISTRY A
(2015)
Article
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M. Ghidiu et al.
CHEMICAL COMMUNICATIONS
(2014)
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Dawei Su et al.
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Chemistry, Multidisciplinary
Sanja Tepavcevic et al.
