Flexible nitrogen-doped carbon nanofiber-reinforced hierarchical hollow iron oxide nanorods as a binder-free electrode for efficient capacitive deionization

Article Engineering, Environmental

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

Jingjing Lei et al.

Summary: This study successfully increased the storage capacity and removal efficiency of chloride ions by preparing a special structure material, providing new insights for Cl- storage electrode in capacitive deionization technology.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Engineering, Chemical

Mechanistic insight into the electrochemical absorption adsorption behaviour of Cd2+ and Na+ on MnO2 in a deionization supercapacitor

Yi Chen et al.

Summary: The study comprehensively investigated the different electrochemical processes of Cd2+/Na+ ions on MnO2 electrodes, revealing that Cd2+ has slower diffusion performance and undergoes a sequential redox process compared to Na+, resulting in lower adsorption capacity. Na+ is mainly stored through tunnelling, while Cd2+ undergoes a different redox process on the surface.

DESALINATION (2022)

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Article Engineering, Environmental

Facile fabrication of N-doped hierarchical porous carbons derived from soft-templated ZIF-8 for enhanced adsorptive removal of tetracycline hydrochloride from water

Zhe Zhang et al.

Summary: N-doped hierarchical porous carbons were successfully prepared and showed promising performance in tetracycline hydrochloride adsorption. Introduction of SDBS in the ZIF-8 precursor improved the pore structure of the carbon materials and increased nitrogen content and surface functional groups.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Bismuth Nanoparticles Encapsulated in Nitrogen-Rich Porous Carbon Nanofibers as a High-Performance Anode for Aqueous Alkaline Rechargeable Batteries

Kai Zhou et al.

Summary: The designed electrodes with different sizes of bismuth nanoparticles embedded in porous carbon nanofibers are obtained by electrospinning and thermal treatment processes, which improve the capacity and cycling stability of bismuth anode material. The optimized electrode exhibits admirable battery performance and cycling stability.

SMALL (2022)

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Article Nanoscience & Nanotechnology

Carbon Nanoarchitectonics with Bi Nanoparticle Encapsulation for Improved Electrochemical Deionization Performance

Haiying Wang et al.

Summary: Carbon-layer-encapsulated nano-Bi composites (Bi@C) were prepared, which showed excellent electrochemical performance and relieved the stress caused by volume expansion. This study provides a promising strategy for improving EDI electrode materials.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Engineering, Environmental

In-situ construction of 3D hierarchical MoS2/CoS2@TiO2 nanotube hybrid electrodes with superior capacitive performance toward water treatment

Zhibo Zhao et al.

Summary: The rational design and construction of graphene-like layered transition-metal disulfides (TMDs) for capacitive desalination (CDI) electrodes have attracted global interest. An advanced self-supported MoS2/CoS2@TiO2 nanotube (TNT) hybrid electrode achieved high Na+ adsorption capacity and excellent regeneration performance, while also demonstrating high removal efficiencies for various heavy metal ions, highlighting its potential for wastewater purification.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Engineering, Environmental

High performance NiCo-LDH//Fe2O3 asymmetric supercapacitors based on binder-free electrodes with dual conductive networks

Shunhua Jiang et al.

Summary: By designing freestanding and binder-free electrodes with dual conductive networks, using hollow and porous carbon nanofiber cloth and ultrathin graphene layer as the inner and outer conductive layers, the electronic conductivity, electroactive reaction sites, structural stability, and kinetics of asymmetric supercapacitors (ASCs) can be improved. This design enhances the rate capability and cyclic stability of ASCs.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Materials Science, Multidisciplinary

Progress in solvent-free dry-film technology for batteries and supercapacitors

Yongxing Li et al.

Summary: This paper provides a comprehensive overview of the technical advantages, development process, principal mechanisms, and application fields of solvent-free dry film technology. It emphasizes powder spray and binder fibrillation as key methods with low-cost mass-production capability and provides detailed explanations of the associated preparation process. Analysis of patents and research papers reveals that these techniques are suitable for all solid-state batteries (ASSBs), suggesting potential for future development in solvent-free dry film technology.

MATERIALS TODAY (2022)

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Article Engineering, Environmental

Reconfiguring the interface charge of Co@Carbon polyhedron for enhanced capacitive deionization

Zehao Zhang et al.

Summary: In this study, the Co-metal organic framework (ZIF-67) was used as a template to prepare 3D mesoporous Co@carbon polyhedron (Co@CP) for capacitive deionization (CDI) anodes, resulting in improved salt removal capacity. The optimized Co@CP exhibited large pore volume, high degree of graphitization, and large specific surface area, with the highest desalination capacity reaching 47.8 mg/g.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Engineering, Environmental

High-performance pseudocapacitive removal of cadmium via synergistic valence conversion in perovskite-type FeMnO3

Yingsheng Xu et al.

Summary: In this study, a new poly-pyrrole coated dual-metal perovskite-type oxide was developed as a reversible capacitive cathode for the removal of cadmium pollution. The material showed excellent removal efficiency and stable performance, attributed to the synergistic effect of Mn and Fe elements.

JOURNAL OF HAZARDOUS MATERIALS (2022)

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Article Engineering, Chemical

Pseudocapacitive deionization with polypyrrole grafted CMC carbon aerogel electrodes

Luwei Miao et al.

Summary: The application of polypyrrole/carbon aerogel (Ppy/CA) electrodes in capacitive deionization (CDI) desalination was studied. The Ppy/CA samples showed better electrochemical properties and ion diffusion rate compared to carbon aerogel. The Ppy/CA electrode exhibited enhanced pseudocapacitance generation. The optimal Ppy/CA-2 CDI system demonstrated high adsorption capacity, fast salt adsorption rate, and good long-term stability.

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

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Article Nanoscience & Nanotechnology

Facet-Controlled LiMn2O4/C as Deionization Electrode with Enhanced Stability and High Desalination Performance

Yuxin Jiang et al.

Summary: The LiMn2O4 material with highly exposed (111) facets prepared by a ball-milling method showed excellent desalination capacity and cycle stability as a capacitive deionization electrode.

NANO-MICRO LETTERS (2022)

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Article Chemistry, Multidisciplinary

Potential-Mediated Recycling of Copper From Brackish Water by an Electrochemical Copper Pump

Hai Deng et al.

Summary: In this study, an efficient electrochemical copper pump (ECP) was constructed using carbon nanosheets, which can deliver Cu2+ from dilute brackish water into much more concentrated solutions. This method exhibits high removal capacity, selectivity coefficient, and low energy consumption.

ADVANCED SCIENCE (2022)

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Article Engineering, Environmental

Capacitive heavy metal ion removal of 3D self-supported nitrogen-doped carbon-encapsulated titanium nitride nanorods via the synergy of faradic-reaction and electro-adsorption

Yang Sun et al.

Summary: A novel self-supported electrode N-C@TiN@CC was proposed in this paper, showing excellent performance and stability in CDI wastewater purification with a removal efficiency of up to 98%. Through specific structure and surface doping, the electrode has been enhanced for deionization efficiency and cycling stability.

CHEMICAL ENGINEERING JOURNAL (2022)

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Article Chemistry, Multidisciplinary

Heterointerface optimization in a covalent organic framework-on-MXene for high-performance capacitive deionization of oxygenated saline water

Shuaihua Zhang et al.

Summary: This study reports a covalent organic framework (COF)-on-MXene heterostructure with heterointerface optimization for high-performance capacitive deionization (CDI) of natural (oxygenated) saline water. The heterostructure inherits the excellent properties of MXene and COF, exhibiting stable cycling performance and high salt adsorption capacity.

MATERIALS HORIZONS (2022)

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Article Chemistry, Multidisciplinary

Reborn Three-Dimensional Graphene with Ultrahigh Volumetric Desalination Capacity

Yuanyuan Li et al.

Summary: The Phoenix Nirvana-like 3D graphene (NvG) designed with a repeated rebirth strategy exhibits superior performance upgrades in terms of density, porosity, electrical conductivity, mechanical strength, and fast infiltration behavior, making it ideal for capacitive deionization (CDI). As a CDI electrode, NvG shows extremely high volumetric capacity and salt absorption capacity, along with significantly lower power consumption compared to traditional 3D graphene (3DG). The overall performance enhancement achieved through this innovative manufacturing strategy is expected to drive the development of new carbon materials.

ADVANCED MATERIALS (2021)

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Article Engineering, Chemical

MoS2 nanoflakes-coated electrospun carbon nanofibers for rocking-chair capacitive deionization

Yong Liu et al.

Summary: Developing highly efficient electrical-driven desalination techniques with minimum energy consumption and high stability is urgently required. In this study, MoS2 nanoflakes-coated carbon nanofibers were synthesized and showed excellent desalination performance, attributed to their dual-mode capacitive behavior and rational cell architecture. The findings highlight the critical importance of dual-mode capacitance electrode materials and rational cell architecture for the further development of high-efficiency electrochemical desalination systems.

DESALINATION (2021)

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Article Engineering, Chemical

Well-dispersed few-layered MoS2 connected with robust 3D conductive architecture for rapid capacitive deionization process and its specific ion selectivity

Yanmeng Cai et al.

Summary: The study focuses on enhancing the salt adsorption capacity and desalination kinetics of CDI cells by developing a structure composed of MoS2, CNT, and CS, which also exhibits good ion selectivity. The MoS2@CNT-CS electrode shows high specific ion selectivity in multi-salt solutions.

DESALINATION (2021)

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Article Multidisciplinary Sciences

Electrochemical removal of amphoteric ions

Amit N. Shocron et al.

Summary: Harmful or valuable ionic species in seawater, brackish water, and wastewater are often amphoteric, weak acids or bases, making their removal challenging for conventional membrane technologies. Capacitive deionization (CDI) is an emerging membraneless technique that shows potential for removing pH-dependent species without chemical dosing, but its development is hindered by the complexities of pH dynamics and ion properties in a charging CDI cell. This study presents a theoretical framework for predicting the electrosorption of pH-dependent species in CDI cells and highlights counterintuitive design rules for efficient removal of amphoteric species like boron.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2021)

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Article Engineering, Chemical

Construction and evaluation of a novel three-electrode capacitive deionization system with high desalination performance

Mingxing Shi et al.

Summary: Research shows that utilizing a three-electrode CDI system with flow-through and flow-by electrodes can achieve higher salt adsorption capacity and faster salt adsorption rate. Additionally, this system has higher charge efficiency, lower energy consumption, and shorter desorption time.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

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Article Engineering, Chemical

Hierarchical Co3O4/CNT decorated electrospun hollow nanofiber for efficient hybrid capacitive deionization

Lu Guo et al.

Summary: The cathode material, Co3O4@CNF@CNT, prepared using an unscalable electrospinning method, showed excellent pseudocapacitive performance and high rate performance, leading to improved salt adsorption capacity and rate in the HCDI system.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

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Article Chemistry, Physical

Hydrophilicity gradient in covalent organic frameworks for membrane distillation

Shuang Zhao et al.

Summary: The study proposes a strategy to modify covalent organic framework membranes by engineering defects to create vertically aligned channels with a hydrophilicity gradient, allowing for high flux membrane distillation membranes. This method offers advantages in increasing membrane permeance and anti-fouling and anti-wetting properties.

NATURE MATERIALS (2021)

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Article Chemistry, Multidisciplinary

Carbon-coated WS2 nanosheets supported on carbon nanofibers for high-rate potassium-ion capacitors

Shitao Geng et al.

Summary: The carbon-coated WS2 nanosheets supported on carbon nanofibers demonstrate high reversible capacity and rate performance, with an intercalation-conversion reaction mechanism confirmed. First-principles calculations confirm fast K+ diffusion kinetics and high K-adsorption ability for the C-WS2@CNFs anode. The potassium ion capacitor assembled from this anode and activated carbon nanofibers cathode delivers superior energy density, rate capability, and cycle life.

ENERGY & ENVIRONMENTAL SCIENCE (2021)

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Article Engineering, Environmental

Free-standing Ti3C2Tx MXene film as binder-free electrode in capacitive deionization with an ultrahigh desalination capacity

Jie Ma et al.

CHEMICAL ENGINEERING JOURNAL (2020)

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Article Engineering, Environmental

Efficient removal of fluoride from aqueous solutions using 3D flower-like hierarchical zinc-magnesium-aluminum ternary oxide microspheres

Ming Gao et al.

CHEMICAL ENGINEERING JOURNAL (2020)

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Exploiting electroconvective vortices in electrodialysis with high-frequency asymmetric bipolar pulses for desalination in overlimiting current regimes

Alvaro Gonzalez-Vogel et al.

DESALINATION (2020)

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Binder-Free Electrodes for Advanced Sodium-Ion Batteries

Ting Jin et al.

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Stabilising Cobalt Sulphide Nanocapsules with Nitrogen-Doped Carbon for High-Performance Sodium-Ion Storage

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NANO-MICRO LETTERS (2020)

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Zinc Spinel Ferrite Nanoparticles as a Pseudocapacitive Electrode with Ultrahigh Desalination Capacity and Long-Term Stability

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ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS (2020)

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Hierarchical Porous Carbon for High-Performance Capacitive Desalination of Brackish Water

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Low-cost and reusable carbon black based solar evaporator for effective water desalination

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Energy projection of the seawater battery desalination system using the reverse osmosis system analysis model

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Hierarchical hollow manganese-magnesium-aluminum ternary metal oxide for fluoride elimination

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Suppressed Jahn-Teller Distortion in MnCo2O4@Ni2P Heterostructures to Promote the Overall Water Splitting

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Constructing hydrangea-like hierarchical zinc-zirconium oxide microspheres for accelerating fluoride elimination

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Mn2O3 nanoflower decorated electrospun carbon nanofibers for efficient hybrid capacitive deionization

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Elucidating the capacitive desalination behavior of NaxCoO2: the significance of electrochemical pre-activation

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Mesoporous amorphous FePO4 nanosphere@Graphene as a faradic electrode in capacitive deionization for high-capacity and fast removal of NaCl from water

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Grafting the Charged Functional Groups on Carbon Nanotubes for Improving the Efficiency and Stability of Capacitive Deionization Process

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Hydrothermal synthesis of hierarchical hollow hydroxyapatite microspheres with excellent fluoride adsorption property

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Flexible nitrogen-doped carbon nanofiber-reinforced hierarchical hollow iron oxide nanorods as a binder-free electrode for efficient capacitive deionization

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