In Situ Synthesis of MOF‐74 Family for High Areal Energy Density of Aqueous Nickel–Zinc Batteries

Advanced Materials, Journal Year: 2022, Volume and Issue: 34(30)

Published: May 20, 2022

Limited by single metal active sites and low electrical conductivity, designing nickel-based metal-organic framework (MOF) materials with high capacity energy density remains a challenge. Herein, series of bi/multimetallic MOF-74 family in situ grown on carbon cloth (CC) doping Mx+ ions Ni-MOF-74 is fabricated: NiM-MOF@CC (M = Mn2+ , Co2+ Cu2+ Zn2+ Al3+ Fe3+ ), NiCoM-MOF@CC ). The type ratio can be adjusted while the original topology preserved. Different are confirmed X-ray absorption fine structure (XAFS). Furthermore, these Ni-based MOF electrodes directly utilized as cathodes for aqueous nickel-zinc batteries (NZBs). Among all as-prepared electrodes, NiCo-MOF@CC-3 (NCM@CC-3), an optimized Co/Ni 1:1, exhibits best which according to functional theory (DFT) theoretical calculations. NCM@CC-3//Zn@CC battery achieves specific 1.77 mAh cm-2 areal 2.97 mWh cycling stability 83% retention rate after 6000 cycles. synthetic strategy based coordination effect concept binder-free provide new direction synthesis high-performance energy-storage field.

Language: Английский

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Metal–organic frameworks and derived materials as photocatalysts for water splitting and carbon dioxide reduction

Coordination Chemistry Reviews, Journal Year: 2022, Volume and Issue: 469, P. 214664 - 214664

Published: June 24, 2022

Language: Английский

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Engineering of Transition Metal Sulfide Nanostructures as Efficient Electrodes for High-Performance Supercapacitors

ACS Applied Energy Materials, Journal Year: 2022, Volume and Issue: 5(6), P. 6481 - 6498

Published: May 25, 2022

Supercapacitors (SCs) are highly promising electrochemical energy conversion and storage devices. SCs display an outstanding power performance, excellent reversibility, long-term stability, simple operation, high feasibility for integration into electronic devices, including consumer electronics, memory backup systems, industrial management systems. The electrode materials determine the cell capacitance, operating voltage, density, time constant of SCs. Transition metal-based (TMEMs) among most electrodes SCs, due to their specific quick charging/discharging rates, in addition ease preparation a yield from low-cost earth-abundant resources. Binary transition metal sulfides (BTMSs) possess various advantages relative other TMEMs, higher capacity, electrical conductivity, redox properties, better quicker electron/ion diffusion, superior reversibility with long cycle life. Herein, inventory recent progress rational design BTMS deliberated, spaning methods operative conditions, mechanism. To help assist further development efficient durable current underlying challenges possible solutions identified addressed, emphasis on device performance vs type merits.

Language: Английский

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Bimetallic NiCo Metal–Organic Frameworks with High Stability and Performance Toward Electrocatalytic Oxidation of Urea in Seawater

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(34), P. 15813 - 15820

Published: Aug. 14, 2024

The urea oxidation reaction (UOR) is an alternative anodic for hydrogen generation via water splitting. significance of UOR lies in both H2 production and the decontamination urea-containing wastewater. Commercial electrocatalysts this field are generally based on noble metals show several limitations. Bimetal–organic frameworks (BMOFs) can be excellent candidates replacement noble-metal-based catalysts beacuse their promising features, such as a tunable structure, high surface area, abundant sites electrocatalysis. In study, series nickel–cobalt BMOFs (Nix-Coy-BMOFs: x y refer to molar fraction Ni Co) were synthesized applied UOR. particular, Ni0.15Co0.85-MOF material with structure similar that its parent Co-MOF, revealed exceptional electrocatalytic performance, evidenced by low values overpotential (1.33 V vs RHE at 10 mA cm–2), TOF (0.47 s–1), Tafel slope (125 mV dec–1). At 40 cm–2 current density, also showed stability during 72 h tests. This performance NiCo-BMOF assigned synergistic effect between Co Ni, active sites, porosity, all which result increased rate due acceleration charge mass transfers. Thus, present work introduces efficient noble-metal-free energy from urea-based

Language: Английский

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Iron series metal-organic frameworks and their composite nanomaterials: Controllable synthesis and clean energy applications

Nano Energy, Journal Year: 2024, Volume and Issue: 125, P. 109559 - 109559

Published: April 4, 2024

Language: Английский

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Multi-metallic Metal–Organic Framework Nanosheets with 3D Flower-like Nanostructure-Based Natural Seawater Splitting toward Stable Industrial-Scale Current Density

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: 12(2), P. 1038 - 1050

Published: Jan. 3, 2024

Rational modification of the chemical components metal–organic framework (MOF) is one most promising and challenging strategies to alternate noble metals in electrochemical water-splitting field. Multimetallic MOFs have emerged as excellent materials for several applications; however, it remains a significant challenge synthesize characterize these materials. In this work, we report facile approach synthesizing series multimetallic MOF nanosheet-assembled hierarchical flower-like morphologies highly active durable electrocatalysts natural seawater electrolysis. Simultaneously, their three-dimensional nanostructures can provide abundant sites, improve intrinsic catalytic activity, facilitate electron transfer. Consequently, obtained RhCoNi-MOF exhibits overpotentials low 40, 48, 50 mV at 10 mA cm–2 alkaline freshwater, simulated seawater, seawater. also offers an outstanding performance comparable Pt/C. Impressively, two-electrode overall electrolysis device using bifunctional catalyst requires voltage 1.52 V stably maintain over 80 h. The density functional theory calculation reveals that superior electrocatalytic activity be attributed synergistic effects introducing Co Rh metal ions.

Language: Английский

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3D nanocubes NiCo-PBA sulfide for high-performance supercapacitors

Electrochimica Acta, Journal Year: 2024, Volume and Issue: 478, P. 143866 - 143866

Published: Jan. 22, 2024

Language: Английский

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Carbon fibre reinforced triboelectric nanogenerator for self-powered sporting events monitoring

Nano Energy, Journal Year: 2024, Volume and Issue: 123, P. 109403 - 109403

Published: Feb. 17, 2024

Language: Английский

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Improved rate capability and energy density of high-mass hybrid supercapacitor realized through long-term cycling stability testing and selective electrode design

Materials Science and Engineering R Reports, Journal Year: 2024, Volume and Issue: 160, P. 100820 - 100820

Published: July 14, 2024

Language: Английский

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Ru/Co metal-organic framework nanosheets arrayed on activated carbon felt as boosted flexible electrodes for symmetric supercapacitors

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 110, P. 115288 - 115288

Published: Jan. 10, 2025

Language: Английский

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