A comprehensive review on the state-of-the-art of piezoelectric energy harvesting

Nano Energy, Journal Year: 2020, Volume and Issue: 80, P. 105567 - 105567

Published: Nov. 5, 2020

The global energy crisis and environmental pollutions caused mainly by the increased consumption of nonrenewable sources prompted researchers to explore alternative technologies that can harvest energies available in ambient environment. Mechanical is most ubiquitous be captured converted into useful electric power. Piezoelectric transduction prominent mechanical harvesting mechanism owing its high electromechanical coupling factor piezoelectric coefficient compared electrostatic, electromagnetic, triboelectric transductions. Thus, has received utmost interest scientific community. Advancements micro nanoscale materials manufacturing processes have enabled fabrication generators with favorable features such as enhanced factor, coefficient, flexibility, stretch-ability, integrate-ability for diverse applications. Besides that, miniature devices lesser power demand are realized market technological developments electronics industry. it anticipated near future, many will powered generators. This paper presents a comprehensive review on state-of-the-art harvesting. conversion principles delineated, working mechanisms operational modes elucidated. Recent researches inorganic, organic, composite, bio-inspired natural reviewed. applications at nano, micro, mesoscale fields including transportation, structures, aerial applications, water smart systems, microfluidics, biomedicals, wearable implantable electronics, tissue regeneration advancements, limitations, potential improvements technology discussed. Briefly, this broad spectrum clean supply wireless fields.

Language: Английский

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Electrochemical Hydrogen Storage Materials: State-of-the-Art and Future Perspectives

Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(9), P. 7579 - 7613

Published: April 10, 2024

Hydrogen is the energy carrier with highest density and critical to development of renewable energy. Efficient hydrogen storage essential realize transition sources. Electrochemical technology has a promising application due its mild conditions. However, research on most efficient electrochemical materials that satisfy goals U.S. Department Energy remain open questions. All above require strategies for designing new materials. This review provides brief overview preparation, storage, details We summarize capabilities alloys metal compounds, carbonaceous materials, oxides, mixed metal–organic frameworks, MXenes, polymer-based It was observed oxides exhibit superior discharge capacity cycling stability. The indicates it vital create novel large surface area, active-conductive profiles, low cost. describe challenges, gaps, future perspectives hope could draw more attention high capacity, safety, cycle stability, cost promoting their practical applications.

Language: Английский

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A critical analysis of the X-ray photoelectron spectra of Ti3C2Tz MXenes

Matter, Journal Year: 2021, Volume and Issue: 4(4), P. 1224 - 1251

Published: Feb. 16, 2021

Since their discovery in 2011, MXenes have garnered worldwide interest. Given 2D structure, surface, or termination, chemistries play a vital role most applications. X-ray photoelectron spectroscopy (XPS) is one of the common characterization tools for quantifying surface terminations and overall chemistry. Herein, we critically review XPS fitting models proposed Ti3C2Tz MXene literature make case that they are at best incomplete worst contradictory. We propose new algorithm based on all data obtained from previously published studies method Ti3C2Tz. In our approach, assign Ti 2p peak 455.1 eV to C–Ti–O\O\O, peaks 456.0, 457.0, 457.9, 459.6 assigned C–Ti–O\O\F, C–Ti–O\F\F, C–Ti–F\F\F, TiO2-xF2x, respectively. The first four represent possible atom terminations; last an oxyfluoride. C 1s 282 eV, ascribed atoms surrounded by 6 atoms, so universal it can almost be used as reference.

Language: Английский

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A Review on MXene Synthesis, Stability, and Photocatalytic Applications

ACS Nano, Journal Year: 2022, Volume and Issue: 16(9), P. 13370 - 13429

Published: Sept. 12, 2022

Photocatalytic water splitting, CO2 reduction, and pollutant degradation have emerged as promising strategies to remedy the existing environmental energy crises. However, grafting of expensive less abundant noble-metal cocatalysts on photocatalyst materials is a mandatory practice achieve enhanced photocatalytic performance owing ability extract electrons efficiently from enable rapid/enhanced catalytic reaction. Hence, developing highly efficient, inexpensive, noble-metal-free composed earth-abundant elements considered noteworthy step toward considering photocatalysis more economical strategy. Recently, MXenes (two-dimensional (2D) transition-metal carbides, nitrides, carbonitrides) shown huge potential alternatives for cocatalysts. several excellent properties, including atomically thin 2D morphology, metallic electrical conductivity, hydrophilic surface, high specific surface area. In addition, they exhibit Gibbs free intermediate H atom adsorption close zero than that commercial Pt-based cocatalyst, Fermi level position above H2 generation potential, an capture activate molecules. Therefore, there growing interest in MXene-based various events. this review, we focus recent advances synthesis with 0D morphologies, stability MXenes, photocatalysts evolution, degradation. The challenges possible future directions enhance are also discussed.

Language: Английский

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Recent Advances in Oxidation Stable Chemistry of 2D MXenes

Advanced Materials, Journal Year: 2021, Volume and Issue: 34(13)

Published: Nov. 24, 2021

Abstract As an emerging star of 2D nanomaterials, transition metal carbides and nitrides, named MXenes, present a large potential in various research areas owing to their intrinsic multilayer structure intriguing physico‐chemical properties. However, the fabrication application functional MXene‐based devices still remain challenging as they are prone oxidative degradation under ambient environment. Within this review, preparation methods MXenes focusing on recent investigations thermal structure–stability relationships inert, oxidizing, aqueous environments systematically introduced. Moreover, key factors that affect oxidation such as, atmosphere, temperature, composition, microstructure, environment, reviewed. Based different scenarios, strategies for avoiding or delaying proposed encourage utilization complicated environments, especially at high temperature. Furthermore, chemistry MXene‐derived oxides is analyzed, which can offer perspectives further design novel composites with unique structures being preserved.

Language: Английский

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2D Material Optoelectronics for Information Functional Device Applications: Status and Challenges

Advanced Science, Journal Year: 2020, Volume and Issue: 7(11)

Published: April 8, 2020

Abstract Graphene and the following derivative 2D materials have been demonstrated to exhibit rich distinct optoelectronic properties, such as broadband optical response, strong tunable light–mater interactions, fast relaxations in flexible nanoscale. Combining with platforms like fibers, waveguides, grating, resonators, these has spurred a variety of active passive applications recently. Herein, electrical properties graphene, transition metal dichalcogenides, black phosphorus, MXene, their van der Waals heterostructures are comprehensively reviewed, followed by design fabrication material‐based structures implementation. Next, devices, ranging from lasers light emitters, frequency convertors, modulators, detectors, plasmonic generators, sensors, introduced. Finally, state‐of‐art investigation progress optoelectronics offers promising way realize new conceptual high‐performance for information science nanotechnology. The outlook on development trends important research directions also put forward.

Language: Английский

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Review—Towards 5th Generation AI and IoT Driven Sustainable Intelligent Sensors Based on 2D MXenes and Borophene

ECS Sensors Plus, Journal Year: 2022, Volume and Issue: 1(1), P. 013601 - 013601

Published: March 1, 2022

Sensors are considered to be an important vector for sustainable development. The demand meet the needs of future generations is accelerating development intelligent sensor-systems integrated with internet things (IoTs), fifth generation (5G) communication, artificial intelligence (AI) and machine learning (ML) strategies. inclusion 2D nanomaterials IoTs/AI/ML has revolutionized diversified applications sensors in healthcare, wearable electronics, safety, environment, defense, agriculture. Owing their unique physicochemical characteristics surface functionalities, borophene MXenes have emerged as advanced 2D-materials (A2M) architect future-generation sensors. ML-AI based theoretical modeling guided research A2M-sensors economically by reducing cost, human resources, contamination. flexible, wearable, intelligent, biocompatible, portable, energy-efficient, self-sustained, point-of-care, economical, which can drastically transform conventional sensing This review provides insight state-of-the-art A2M-based physical, chemical, biosensor efficiently detect chemical species, gases/vapors, drugs, biomarkers/pathogens, pressure, metal ions, radiations, temperature, light, humidity. Besides fundamental challenges creating a gap between predictions, practical-evaluations, in-lab-technology, commercial viability, potential solutions, field-deployable prospects addressed realize commercialization, thereby ensuring ability maintain communities.

Language: Английский

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MXene based emerging materials for supercapacitor applications: Recent advances, challenges, and future perspectives

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 462, P. 214518 - 214518

Published: March 28, 2022

Language: Английский

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Recent Advances in Functional 2D MXene‐Based Nanostructures for Next‐Generation Devices

Advanced Functional Materials, Journal Year: 2020, Volume and Issue: 30(49)

Published: Sept. 9, 2020

Abstract Similar to graphene and black phosphorus (BP), 2D transition metal carbides nitrides (MXenes) are of great interest in a variety fields, such as energy storage conversion, sensors, electromagnetic interference (EMI) shielding, photothermal therapy due their excellent conductivity hydrophilicity, large specific capacitance, high effect, superior electrochemical performance. To further broaden applicable ranges beyond existing boundaries fully exploit these potentials, functional MXene nanostructures recent years have been rationally designed developed by various approaches, doping strategies, surface functionalization, hybridization, for next‐generation devices with the merits low power consumption, intelligence, high‐integration chips. This review provides an overview synthetic routes fundamental properties nanostructures, including surface‐modified MXenes mixed‐dimensional MXene‐based heterostructures, highlights state‐of‐the‐art progress applications regard catalysis, photodetectors, EMI degradation, biomedical applications, presents challenges perspectives burgeoning fields. It is hoped that this will inspire more efforts toward research on new satisfy growing requirements systems.

Language: Английский

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Status and Prospects of MXene‐Based Lithium–Sulfur Batteries

Advanced Functional Materials, Journal Year: 2021, Volume and Issue: 31(21)

Published: March 5, 2021

Abstract Lithium–sulfur (Li–S) batteries with a theoretical energy density of 2567 Wh kg −1 are very promising next‐generation storage systems, but suffer from the insulativity sulfur and Li 2 S, shuttle effect due to dissolution migration polysulfides, lithium dendrite issue. MXenes, family 2D transition metal carbides/nitrides, which have metallic conductivity, structural variety, strong chemical adsorption ability effective catalytic for fast kinetics, inducing uniform growth Li, exhibit potential high‐performance Li–S batteries. In this review, recent progress achievements MXene‐based summarized, including use MXenes in cathode, interlayer between cathode separator, anode. The architecture construction modification as well hybridization other materials demonstrated. enhancement on electrochemical performance related mechanisms composites discussed. Finally, challenges perspectives battery application also given.

Language: Английский

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