MXene‐Copper/Cobalt Hybrids via Lewis Acidic Molten Salts Etching for High Performance Symmetric Supercapacitors

Angewandte Chemie, Год журнала: 2021, Номер 133(48), С. 25522 - 25526

Опубликована: Сен. 29, 2021

Abstract MXenes have attracted great interests as supercapacitors due to their metallic conductivity, high density, and hydrophilic nature. Herein we report Ti 3 C 2 ‐Cu/Co hybrids via molten salt etching in which the existence of metal atoms interactions with MXene surficial O were elucidated by XAFS for first time. The electrochemical investigation ‐Cu electrode demonstrated pseudocapacitive contribution Cu a splendid specific capacitance 885.0 F g −1 at 0.5 A 1.0 M H SO 4 . Symmetric supercapacitor ‐Cu//Ti was operating voltage 1.6 V, areal 290.5 mF cm −2 1 mA , stability over 10 000 cycles. It delivered an energy density 103.3 μWh power 0.8 mW based on pouch fabricated. provides deeper insights into mechanism strategies designing MXene‐based materials storage.

Язык: Английский

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MXenes: A comprehensive review of synthesis, properties, and progress in supercapacitor applications

Journal of Materiomics, Год журнала: 2023, Номер 9(6), С. 1196 - 1241

Опубликована: Сен. 27, 2023

MXenes, a class of two-dimensional materials, have garnered significant attention due to their unique properties and versatile applications in various fields. This review provides comprehensive overview MXene synthesis methods, highlighting distinctive layered structure tunable through surface functionalization. The focus then shifts remarkable role supercapacitor technology. MXenes exhibit high electrical conductivity, large areas, tailored chemistry, making them promising candidates for energy storage supercapacitors. paper discusses the interplay electric double-layer capacitance pseudocapacitance mechanisms within MXene-based electrodes, detailing recent research efforts aimed at optimizing performance. Through combination theoretical insights experimental findings, potential revolutionize technology emerges, offering prospects high-energy-density long-lasting solutions. Additionally, this highlights advances supercapacitors, including novel electrode designs, electrolyte engineering, hybrid showcasing dynamic evolution research. aims provide thorough understanding MXenes' synthesis, properties, pivotal advancing technology, while also encompassing latest breakthroughs rapidly evolving field.

Язык: Английский

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MXene terminating groups O, –F or –OH, –F or O, –OH, –F, or O, –OH, –Cl?

Journal of Energy Chemistry, Год журнала: 2022, Номер 76, С. 90 - 104

Опубликована: Авг. 28, 2022

Язык: Английский

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Preparation and Application of 2D MXene-Based Gas Sensors: A Review

Chemosensors, Год журнала: 2021, Номер 9(8), С. 225 - 225

Опубликована: Авг. 14, 2021

Since MXene (a two-dimensional material) was discovered in 2011, it has been favored all aspects due to its rich surface functional groups, large specific area, high conductivity, porosity, organic bonds, and hydrophilicity. In this paper, the preparation of is introduced first. HF etching first method for MXene; however, corrosive, resulting development situ (fluoride + HCl). Due harmful effects fluorine terminal on performance MXene, a fluorine-free developed. The increase interlayer spacing brought about by adding an intercalator can affect MXene’s performance. usual methods render inevitably agglomerate yields are insufficient. Many new were researched order solve problems agglomeration yield. Secondly, application MXene-based materials gas sensors discussed. often regarded as flexible sensor, detection ppb-level acetone at room temperature observed time. After formation composite materials, increasing area increased number active sites adsorption sensitivity improved. Moreover, paper discusses gas-sensing mechanism MXene. metallic affected expansion lamellae will be doped with H2O oxygen during process become p-type semiconductor. A p-n heterojunction Schottky barrier forms combinations other semiconductors; thus, sensitivities regulated controlled them. Although there only several reports sensors, expected that effectively detect gases temperature, especially NH3 VOC gas. Finally, challenges opportunities sensor

Язык: Английский

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Delaminating Ti3C2 MXene by blossom of ZnIn2S4 microflowers for noble-metal-free photocatalytic hydrogen production

Journal of Material Science and Technology, Год журнала: 2022, Номер 120, С. 89 - 98

Опубликована: Март 2, 2022

Язык: Английский

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