Strategies for the Stabilization of Zn Metal Anodes for Zn‐Ion Batteries

Advanced Energy Materials, Journal Year: 2020, Volume and Issue: 11(1)

Published: Nov. 16, 2020

Abstract Zinc‐ion batteries (ZIBs) are regarded as a promising candidate for next‐generation energy storage systems due to their high safety, resource availability, and environmental friendliness. Nevertheless, the instability of Zn metal anode has impeded ZIBs from being reliably deployed in proposed applications. Specifically, dendrite formation hydrogen evolution reaction (HER) on surface significantly compromise Coulombic efficiency cycling stability ZIBs. In recent years, increasing efforts have been devoted overcoming these obstacles by electrode structure design, interface modification, electrolyte/separator optimization. To achieve an insightful comprehensive understanding strategies, it is worth analyzing categorizing them according intrinsic mechanisms. Considering this, overview anodic stabilization strategies provided. First, fundamentals introduced, associated mechanisms presented. Furthermore, HER suppression categorized, discussed, analyzed detail. Last, suggestions deployment research, industrialization, commercialization aspects proposed. It expected that this Review will shed light roadmap exploration novel anodes

Language: Английский

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Clay‐Inspired MXene‐Based Electrochemical Devices and Photo‐Electrocatalyst: State‐of‐the‐Art Progresses and Challenges

Advanced Materials, Journal Year: 2018, Volume and Issue: 30(12)

Published: Jan. 22, 2018

MXene, an important and increasingly popular category of postgraphene 2D nanomaterials, has been rigorously investigated since early 2011 because advantages including flexible tunability in element composition, hydrophobicity, metallic nature, unique in-plane anisotropic structure, high charge-carrier mobility, tunable band gap, favorable optical mechanical properties. To fully exploit these potentials further expand beyond the existing boundaries, novel functional nanostructures spanning monolayer, multilayer, nanoparticles, composites have developed by means intercalation, delamination, functionalization, hybridization, among others. Undeniably, cutting-edge developments applications clay-inspired MXene platform as electrochemical electrode or photo-electrocatalyst conferred superior performance made significant impact field energy advanced catalysis. This review provides overview fundamental properties synthesis routes pure functionalized their hybrids, highlights state-of-the-art progresses MXene-based with respect to supercapacitors, batteries, electrocatalysis photocatalysis, presents challenges prospects burgeoning field.

Language: Английский

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Non-adiabatic Excited-State Molecular Dynamics: Theory and Applications for Modeling Photophysics in Extended Molecular Materials

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(4), P. 2215 - 2287

Published: Feb. 10, 2020

Optically active molecular materials, such as organic conjugated polymers and biological systems, are characterized by strong coupling between electronic vibrational degrees of freedom. Typically, simulations must go beyond the Born–Oppenheimer approximation to account for non-adiabatic excited states. Indeed, dynamics is commonly associated with exciton photophysics involving charge energy transfer, well dissociation recombination. Understanding photoinduced in materials vital providing an accurate description formation, evolution, decay. This interdisciplinary field has matured significantly over past decades. Formulation new theoretical frameworks, development more efficient computational algorithms, evolution high-performance computer hardware extended these very large systems hundreds atoms, including numerous studies semiconductors biomolecules. In this Review, we will describe recent advances treatment decoherence surface-hopping methods, role solvent effects, trivial unavoided crossings, analysis data based on transition densities, implementations numerical methods. We also emphasize newly developed semiclassical approaches, Gaussian approximation, which retain phase width information significant interference effects while maintaining high efficiency approaches. The above developments have been employed successfully a variety materials.

Language: Английский

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Formation of quasi-core-shell In2S3/anatase TiO2@metallic Ti3C2Tx hybrids with favorable charge transfer channels for excellent visible-light-photocatalytic performance

Applied Catalysis B Environment and Energy, Journal Year: 2018, Volume and Issue: 233, P. 213 - 225

Published: April 9, 2018

Language: Английский

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Selective CO₂ Reduction on 2D Mesoporous Bi Nanosheets

Advanced Energy Materials, Journal Year: 2018, Volume and Issue: 8(35)

Published: Oct. 24, 2018

Abstract The conversion of CO 2 to value‐added products using electrical or solar energy represents an attractive means for the capture and utilization atmospheric . Formate is a popular product from reduction, but its reaction selectivity usually unsatisfactory. Tin‐based materials have attracted most attention formate production at present. Unfortunately, them only exhibit moderate in narrow highly cathodic potential window. In this study, it demonstrated that traditionally under‐explored bismuth has much greater than tin other materials. Mesoporous nanosheets are prepared here by transformation atomic‐thick oxycarbonate nanosheets. They enable selective reduction with large current density, excellent Faradaic efficiency (≈100%) over broad window great operation stability. Moreover, Bi integrated oxygen evolution electrocatalyst full cells, achieve efficient robust /H O formate/O

Language: Английский

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Ultrafast Spectroscopy: State of the Art and Open Challenges

Journal of the American Chemical Society, Journal Year: 2019, Volume and Issue: 142(1), P. 3 - 15

Published: Dec. 4, 2019

Ultrafast spectroscopy techniques use sequences of ultrashort light pulses (with femto- to attosecond durations) study photoinduced dynamical processes in atoms, molecules, nanostructures, and solids. This field research has experienced an impetuous growth recent years, due the technological progress generation development sophisticated spectroscopic techniques, which greatly increase amount information on process under study. paper aims at providing a non-exhaustive overview state art pointing out future challenges. We first review ultrafast optics, enabled broadly tunable with duration down few optical cycles; we then discuss pump–probe technique, showing examples its capability combine very high time resolution, regime, broad spectral coverage; introduce two-dimensional present results that demonstrate additional content provided by combination temporal resolution. Next, achievements X-ray electron diffraction, provide time-dependent structural photochemical processes, conclude critical analysis open challenges field.

Language: Английский

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Overall photosynthesis of H2O2 by an inorganic semiconductor

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Feb. 24, 2022

Abstract Artificial photosynthesis of H 2 O using earth-abundant water and oxygen is a promising approach to achieve scalable cost-effective solar fuel production. Recent studies on this topic have made significant progress, yet are mainly focused organic polymers. This set photocatalysts susceptible potent oxidants (e.g. hydroxyl radical) that inevitably formed during generation. Here, we report an inorganic Mo-doped faceted BiVO 4 (Mo:BiVO ) system resistant radical oxidation exhibits high overall efficiency among photocatalysts, with apparent quantum yield 1.2% solar-to-chemical conversion 0.29% at full spectrum, as well 5.8% 420 nm. The surface-reaction kinetics selectivity Mo:BiVO were tuned by precisely loading CoO x Pd {110} {010} facets, respectively. Time-resolved spectroscopic investigations photocarriers suggest depositing select cocatalysts distinct facet tailored the interfacial energetics between facets enhanced charge separation in , therefore overcoming key challenge developing efficient photocatalysts. generation achieved delicate design catalyst spatial electronic structures sheds light applying robust particulate artificial .

Language: Английский

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The future of quantum biology

Journal of The Royal Society Interface, Journal Year: 2018, Volume and Issue: 15(148), P. 20180640 - 20180640

Published: Nov. 1, 2018

Biological systems are dynamical, constantly exchanging energy and matter with the environment in order to maintain non-equilibrium state synonymous living. Developments observational techniques have allowed us study biological dynamics on increasingly small scales. Such studies revealed evidence of quantum mechanical effects, which cannot be accounted for by classical physics, a range processes. Quantum biology is such processes, here we provide an outline current field, as well insights into future directions.

Language: Английский

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Machine learning enables long time scale molecular photodynamics simulations

Chemical Science, Journal Year: 2019, Volume and Issue: 10(35), P. 8100 - 8107

Published: Jan. 1, 2019

Photo-induced processes are fundamental in nature but accurate simulations of their dynamics seriously limited by the cost underlying quantum chemical calculations, hampering application for long time scales. Here we introduce a method based on machine learning to overcome this bottleneck and enable photodynamics nanosecond scales, which otherwise out reach with contemporary approaches. Instead expensive chemistry during molecular simulations, use deep neural networks learn relationship between geometry its high-dimensional electronic properties. As an example, evolution methylenimmonium cation one is used demonstrate that algorithms can outperform standard excited-state approaches computational efficiency while delivering same accuracy.

Language: Английский

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Hydrogen storage in light-metal based systems: A review

Journal of Alloys and Compounds, Journal Year: 2020, Volume and Issue: 829, P. 154597 - 154597

Published: March 4, 2020

Language: Английский

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