Atomically Thin Materials for Next-Generation Rechargeable Batteries

Chemical Reviews, Год журнала: 2021, Номер 122(1), С. 957 - 999

Опубликована: Окт. 28, 2021

Atomically thin materials (ATMs) with thicknesses in the atomic scale (typically <5 nm) offer inherent advantages of large specific surface areas, proper crystal lattice distortion, abundant dangling bonds, and strong in-plane chemical making them ideal 2D platforms to construct high-performance electrode for rechargeable metal-ion batteries, metal-sulfur metal-air batteries. This work reviews synthesis electronic property tuning state-of-the-art ATMs, including graphene derivatives (GE/GO/rGO), graphitic carbon nitride (g-C3N4), phosphorene, covalent organic frameworks (COFs), layered transition metal dichalcogenides (TMDs), carbides, carbonitrides, nitrides (MXenes), oxides (TMOs), metal-organic (MOFs) constructing next-generation high-energy-density high-power-density batteries meet needs rapid developments portable electronics, electric vehicles, smart electricity grids. We also present our viewpoints on future challenges opportunities efficient ATMs

Язык: Английский

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Covalent Organic Framework for Rechargeable Batteries: Mechanisms and Properties of Ionic Conduction

Advanced Energy Materials, Год журнала: 2022, Номер 12(20)

Опубликована: Апрель 10, 2022

Abstract Ionic conduction plays a critical role in the process of electrode reactions and charge transfer kinetics rechargeable battery. Covalent organic frameworks (COFs) have emerged as an exciting new class ionic conductors, made great progress terms their application batteries. The unique features COFs, such well‐defined directional channels, functional diversity, structural robustness, endow COF‐based conductors with low diffusion energy barrier excellent temperature tolerance, which are much superior to classic inorganic or polymer conductors. Here, comprehensive analysis summary ion‐conducting behavior presented, design principles for COFs emphasized. Moreover, systematic overview recent development serving electrodes, separators, solid electrolytes, artificial interphase materials diverse battery applications, metal‐ion batteries, lithium metal lithium–sulfur lithium–CO 2 zinc–air etc., is proposed. This review expected provide theoretical guidance novel kinds conductor bearing intrinsic framework structures boost further research enthusiasm

Язык: Английский

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Optimizing Microenvironment of Asymmetric N,S‐Coordinated Single‐Atom Fe via Axial Fifth Coordination toward Efficient Oxygen Electroreduction

Small, Год журнала: 2021, Номер 18(2)

Опубликована: Ноя. 20, 2021

Single-atom catalysts (SACs) are attractive candidates for oxygen reduction reaction (ORR). The catalytic performances of SACs mainly determined by the surrounding microenvironment single metal sites. Microenvironment engineering and understanding structure-activity relationship is critical, which remains challenging. Herein, a self-sacrificing strategy developed to synthesize asymmetric N,S-coordinated single-atom Fe with axial fifth hydroxy (OH) coordination (Fe-N3 S1 OH) embedded in N,S codoped porous carbon nanospheres (FeN/SC). Such unique penta-coordination cutting-edge techonologies aiding systematic simulations. as-obtained FeN/SC exhibits superior ORR activity, showcases half-wave potential 0.882 V surpassing benchmark Pt/C. Moreover, theoretical calculations confirmed OH FeN3 can optimize 3d orbitals center strengthen O2 adsorption enhance activation on site, thus reducing barrier accelerating dynamics. Furthermore, containing H2 O2 fuel cell performs high peak power density 512 mW cm-2 , based Znair batteries show 203 49 liquid flexible all-solid-state configurations, respectively. This study offers new platform fundamentally understand asymmetrical planar sites electrocatalysis.

Язык: Английский

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The coming of age of water channels for separation membranes: from biological to biomimetic to synthetic

Chemical Society Reviews, Год журнала: 2022, Номер 51(11), С. 4537 - 4582

Опубликована: Янв. 1, 2022

Water channels are one of the key pillars driving development next-generation desalination and water treatment membranes. Over past two decades, rise nanotechnology has brought together an abundance multifunctional nanochannels that poised to reinvent separation membranes with performances exceeding those state-of-the-art polymeric within water-energy nexus. Today, these can be broadly categorized into biological, biomimetic synthetic, owing their different natures, physicochemical properties methods for membrane nanoarchitectonics. Furthermore, against backdrop mechanisms, types nanochannel exhibit unique merits limitations, which determine usability suitability designs. Herein, this review outlines progress a comprehensive amount nanochannels, include aquaporins, pillar[5]arenes, I-quartets, nanotubes porins, graphene-based materials, metal- covalent-organic frameworks, porous organic cages, MoS2, MXenes, offering comparative glimpse where potential lies. First, we map out background by looking evolution over years, before discussing latest developments focusing on intrinsic transport from chemistry standpoint. Next, put perspective fabrication nanoarchitecture high-performance nanochannel-enabled membranes, especially distinct differences each type how they leveraged unlock as-promised high in current mainstream Lastly, critically evaluate recent findings provide holistic qualitative assessment respect attributes most strongly valued engineering, upcoming challenges share our perspectives researchers pathing future directions coming age channels.

Язык: Английский

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A Ferrocene‐Functionalized Covalent Organic Framework for Enhancing Chemodynamic Therapy via Redox Dyshomeostasis

Small, Год журнала: 2021, Номер 17(32)

Опубликована: Июль 3, 2021

Chemodynamic therapy (CDT), which induces cell death by decomposing high levels of H2 O2 in tumor cells into highly toxic ·OH, is recognized as a promising antineoplastic approach. However, current CDT approaches are often restricted the controlled and upregulated cellular antioxidant defense. To enhance ·OH-induced damage CDT, covalent organic framework (COF)-based, ferrocene (Fc)- glutathione peroxidase 4 (GPX4) inhibitor-loaded nanodrug, RSL3@COF-Fc (2b), fabricated. The obtained 2b not only promotes situ Fenton-like reactions to trigger ·OH production cells, but also attenuates repair mechanisms under oxidative stress via irreversible GPX4 inhibition. As result, these two synergistically result massive lipid peroxide accumulation, subsequent damage, ultimately ferroptosis, while being limited intracellular glutathione. It believed that this research provides paradigm for enhancing reactive oxygen species-mediated oncotherapy through redox dyshomeostasis may provide new insights developing COF-based nanomedicine.

Язык: Английский

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