Supercapacitors as next generation energy storage devices: Properties and applications

Energy, Год журнала: 2022, Номер 248, С. 123617 - 123617

Опубликована: Март 1, 2022

Язык: Английский

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Freestanding Metal–Organic Frameworks and Their Derivatives: An Emerging Platform for Electrochemical Energy Storage and Conversion

Chemical Reviews, Год журнала: 2022, Номер 122(11), С. 10087 - 10125

Опубликована: Апрель 21, 2022

Metal–organic frameworks (MOFs) have recently emerged as ideal electrode materials and precursors for electrochemical energy storage conversion (EESC) owing to their large specific surface areas, highly tunable porosities, abundant active sites, diversified choices of metal nodes organic linkers. Both MOF-based MOF-derived in powder form been widely investigated relation synthesis methods, structure morphology controls, performance advantages targeted applications. However, engage them applications, both binders additives would be required postprocessed electrodes, fundamentally eliminating some the sites thus degrading superior effects MOF-based/derived materials. The advancement freestanding electrodes provides a new promising platform EESC thanks apparent merits, including fast electron/charge transmission seamless contact between current collectors. Benefiting from synergistic effect structures materials, outstanding can achieved, stimulating increasing enthusiasm recent years. This review timely comprehensive overview on structural features fabrication techniques electrodes. Then, latest advances are summarized devices electrocatalysis. Finally, insights into currently faced challenges further perspectives these feasible solutions discussed, aiming at providing set guidance promote development scale-up production commercial

Язык: Английский

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Engineering Platinum–Cobalt Nano‐alloys in Porous Nitrogen‐Doped Carbon Nanotubes for Highly Efficient Electrocatalytic Hydrogen Evolution

Angewandte Chemie International Edition, Год журнала: 2021, Номер 60(35), С. 19068 - 19073

Опубликована: Июнь 17, 2021

Abstract Highly efficient electrocatalysts are essential for the production of green hydrogen from water electrolysis. Herein, a metal‐organic framework‐assisted pyrolysis‐replacement‐reorganization approach is developed to obtain ultrafine Pt‐Co alloy nanoparticles (sub‐10 nm) attached on inner and outer shells porous nitrogen‐doped carbon nanotubes (NCNT) with closed ends. During thermal reorganization, migration nano‐alloys both surfaces ensures maximized exposure active sites while maintaining robust attachment matrix. Density functional theory calculations suggest nearly thermodynamically‐neutral free energy adsorption intermediates diversified induced by alloying, thus resulting in great promotion intrinsic activity towards evolution reaction (HER). Benefiting delicate structural design compositional modulation, optimized Pt 3 Co@NCNT electrocatalyst manifests outstanding HER superior stability acidic alkaline media.

Язык: Английский

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Design Engineering, Synthesis Protocols, and Energy Applications of MOF-Derived Electrocatalysts

Nano-Micro Letters, Год журнала: 2021, Номер 13(1)

Опубликована: Июнь 1, 2021

The core reactions for fuel cells, rechargeable metal-air batteries, and hydrogen production are the oxygen reduction reaction (ORR), evolution (OER), (HER), which heavily dependent on efficiency of electrocatalysts. Enormous attempts have previously been devoted in non-noble electrocatalysts born out metal-organic frameworks (MOFs) ORR, OER, HER applications, due to following advantageous reasons: (i) significant porosity eases electrolyte diffusion; (ii) supreme catalyst-electrolyte contact area enhances diffusion efficiency; (iii) electronic conductivity can be extensively increased owing unique construction block subunits MOFs-derived electrocatalysis. Herein, recent progress including synthesis protocols, design engineering, DFT calculations roles, energy applications is discussed reviewed. It concluded that elevated performances attributed an advantageously well-designed high-porosity structure, surface area, plentiful active centers. Furthermore, perspectives MOF-derived presented.

Язык: Английский

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Dual‐Phasic Carbon with Co Single Atoms and Nanoparticles as a Bifunctional Oxygen Electrocatalyst for Rechargeable Zn–Air Batteries

Advanced Functional Materials, Год журнала: 2021, Номер 31(42)

Опубликована: Июль 20, 2021

Abstract The great interest in rechargeable Zn–air batteries (ZABs) arouses extensive research on low‐cost, high‐active, and durable bifunctional electrocatalysts to boost the sluggish oxygen reduction reaction (ORR) evolution (OER). It remains a challenge simultaneously host high‐active independent ORR OER sites single catalyst. Herein dual‐phasic carbon nanoarchitecture consisting of single‐atom phase for nanosized is proposed. Specifically, Co atoms supported nanotubes (single‐atom phase) encapsulated zeolitic‐imidazole‐framework‐derived polyhedron (nanosized are integrated together via nanotube bridges. obtained catalyst shows small overpotential difference 0.74 V between potential at 10 mA cm −2 half‐wave potential. ZAB based demonstrates large power density 172 mW . Furthermore, it charge‐discharge gap 0.51 5 outstanding discharge‐charge cycling durability. This study provides feasible design concept achieve multifunctional catalysts promotes development ZABs.

Язык: Английский

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MOF-derived hollow heterostructures for advanced electrocatalysis

Coordination Chemistry Reviews, Год журнала: 2021, Номер 439, С. 213946 - 213946

Опубликована: Апрель 14, 2021

Язык: Английский

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A clicking confinement strategy to fabricate transition metal single-atom sites for bifunctional oxygen electrocatalysis

Science Advances, Год журнала: 2022, Номер 8(11)

Опубликована: Март 16, 2022

Rechargeable zinc-air batteries call for high-performance bifunctional oxygen electrocatalysts. Transition metal single-atom catalysts constitute a promising candidate considering their maximum atom efficiency and high intrinsic activity. However, the fabrication of atomically dispersed transition sites is highly challenging, creating need new design strategies synthesis methods. Here, clicking confinement strategy proposed to efficiently predisperse transitional atoms in precursor directed by click chemistry ensure successful construction abundant sites. Concretely, cobalt-coordinated porphyrin units are covalently clicked on substrate cobalt affording Co-N-C electrocatalyst. The electrocatalyst exhibits impressive electrocatalytic performances with an activity indicator Δ E 0.79 V. This work extends approach prepare efficient electrocatalysis inspires methodology precise catalytic materials.

Язык: Английский

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Graphene-Based Metal–Organic Framework Hybrids for Applications in Catalysis, Environmental, and Energy Technologies

Chemical Reviews, Год журнала: 2022, Номер 122(24), С. 17241 - 17338

Опубликована: Ноя. 1, 2022

Current energy and environmental challenges demand the development design of multifunctional porous materials with tunable properties for catalysis, water purification, conversion storage. Because their amenability to de novo reticular chemistry, metal-organic frameworks (MOFs) have become key in this area. However, usefulness is often limited by low chemical stability, conductivity inappropriate pore sizes. Conductive two-dimensional (2D) robust structural skeletons and/or functionalized surfaces can form stabilizing interactions MOF components, enabling fabrication nanocomposites characteristics. Graphene its functional derivatives are largest class 2D possess remarkable compositional versatility, diversity, controllable surface chemistry. Here, we critically review current knowledge concerning growth, structure, graphene derivatives, MOFs, graphene@MOF composites as well associated structure-property-performance relationships. Synthetic strategies preparing tuning also comprehensively reviewed together applications gas storage/separation, catalysis (organo-, electro-, photocatalysis), electrochemical storage conversion. hybrids practical addressed, revealing areas future investigation. We hope that will inspire further exploration new energy, electronic, biomedical, photocatalysis studies on previously unreported known reveal potential "diamonds rough".

Язык: Английский

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Recent advances in and perspectives on pseudocapacitive materials for Supercapacitors–A review

Journal of Power Sources, Год журнала: 2022, Номер 557, С. 232558 - 232558

Опубликована: Дек. 29, 2022

Язык: Английский

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Micro/nano metal–organic frameworks meet energy chemistry: A review of materials synthesis and applications

eScience, Год журнала: 2023, Номер 3(2), С. 100092 - 100092

Опубликована: Янв. 10, 2023

Micro/nano metal–organic frameworks (MOFs) have attracted significant attention in recent years due to their numerous unique properties, with many synthetic methods and strategies being reported for constructing MOFs specific micro/nano structures. In addition, the design of energy storage conversion applications study structure–activity relationship also become research hotspots. Herein, a comprehensive overview progress on is presented. We begin brief introduction various synthesis controlling morphology MOFs. Subsequently, structure-dependent properties as electrode materials or catalysts terms batteries, supercapacitors, catalysis are discussed. Finally, remaining challenges future perspectives this field Overall, review expected inspire advanced efficient technologies.

Язык: Английский

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