Freestanding Ti₃C₂T_x MXene/Prussian Blue Analogues Films with Superior Ion Uptake for Efficient Capacitive Deionization by a Dual Pseudocapacitance Effect

ACS Nano, Journal Year: 2021, Volume and Issue: 16(1), P. 1239 - 1249

Published: Dec. 23, 2021

Exploring and designing high-performance Faradaic electrode materials is of great significance to enhance the desalination performance hybrid capacitive deionization (HCDI). Herein, open freestanding films (MXene/Prussian blue analogues (PBAs), specifically, MXene/NiHCF MXene/CuHCF) were prepared by vacuum filtration a mixed solution PBAs nanoparticles Ti3C2Tx MXene dispersion directly used as HCDI electrodes. The conductive nanosheets bridge form three-dimensional (3D) network structure, which can accelerate salt ion electron diffusion/transport kinetics for HCDI. Additionally, prevent restacking nanosheets, expand their interlayer spacing, facilitate rapid diffusion storage ions. Benefiting from dual pseudocapacitance synergistic effect MXene, obtained MXene/PBAs show superior properties, with high capacity (85.1 mg g-1 film 80.4 MXene/CuHCF film) an ultrafast salt-removal rate, much higher than those other effect, adsorption Na+ ions, enhanced conductivity demonstrated through first-principles calculations. This paper offers simple convenient method design electrodes promotes development technology.

Language: Английский

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Nanoarchitectonics from 2D to 3D: MXenes-derived nitrogen-doped 3D nanofibrous architecture for extraordinarily-fast capacitive deionization

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 430, P. 133161 - 133161

Published: Oct. 25, 2021

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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Chloride pre-intercalated CoFe-layered double hydroxide as chloride ion capturing electrode for capacitive deionization

Chemical Engineering Journal, Journal Year: 2021, Volume and Issue: 433, P. 133578 - 133578

Published: Nov. 14, 2021

Language: Английский

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Electrocapacitive Deionization: Mechanisms, Electrodes, and Cell Designs

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(18)

Published: Feb. 26, 2023

Abstract Capacitive deionization (CDI) is an emerging water desalination technology for removing different ionic species from water, which based on electric charge compensation by these charged species. CDI becoming popular because it more energy‐efficient and cost‐effective than other technologies, such as reverse osmosis distillation, specifically in dealing with brackish having low or moderate salt concentrations. Over the past decade, research field has witnessed significant advances used electrode materials, cell architectures, associated mechanisms applications. This review article first discusses ion storage/removal carbon Faradaic materials aided advanced situ analysis techniques computations. It then summarizes progress toward terms of structure, surface chemistry, composition. More still, architectures highlighting their design concepts. Finally, current challenges future directions are summarized to provide guidelines research.

Language: Английский

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Vertically Aligned Bismuthene Nanosheets on MXene for High-Performance Capacitive Deionization

ACS Nano, Journal Year: 2023, Volume and Issue: 17(5), P. 4843 - 4853

Published: March 3, 2023

Capacitive deionization has been considered as a promising solution to the challenge of freshwater shortage due its high efficiency, low environmental footprint, and energy consumption. However, developing advanced electrode materials improve capacitive performance remains challenge. Herein, hierarchical bismuthene nanosheets (Bi-ene NSs)@MXene heterostructure was successfully prepared by combining Lewis acidic molten salt etching galvanic replacement reaction, which achieves effective utilization byproducts (residual copper). The vertically aligned array evenly in situ grown on surface MXene, not only facilitate ion electron transport well offer abundant active sites but also provide strong interfacial interaction between MXene. Benefiting from above advantages, Bi-ene NSs@MXene material exhibits desalination capacity (88.2 mg/g at 1.2 V), fast rate, good long-term cycling performance. Moreover, mechanisms involved were elaborated systematical characterizations density functional theory calculations. This work provides inspirations for preparation MXene-based heterostructures their application deionization.

Language: Английский

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Mxene pseudocapacitive electrode material for capacitive deionization

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 435, P. 134959 - 134959

Published: Jan. 30, 2022

Language: Английский

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Carbon nanotube bridged nickel hexacyanoferrate architecture for high-performance hybrid capacitive deionization

Journal of Colloid and Interface Science, Journal Year: 2022, Volume and Issue: 630, P. 372 - 381

Published: Oct. 30, 2022

Language: Английский

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Flexible self-supporting CoFe-LDH/MXene film as a chloride ions storage electrode in capacitive deionization

Chemical Engineering Journal, Journal Year: 2022, Volume and Issue: 437, P. 135381 - 135381

Published: Feb. 23, 2022

Language: Английский

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Preparation of MOF/polypyrrole and flower-like MnO2 electrodes by electrodeposition: High-performance materials for hybrid capacitive deionization defluorination

Water Research, Journal Year: 2022, Volume and Issue: 229, P. 119441 - 119441

Published: Nov. 28, 2022

Language: Английский

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