Raspberry-structured silver-carbon hybrid nanoparticle clusters for high-performance capacitive deionization

Chiang, Meng-Ting; Tu, Yi-Heng; Chiang, Hsin-Li; Hu, Chi‐Chang; Tsai, De‐Hao

doi:10.1016/j.desal.2021.115343

Cited by 9 publications

(9 citation statements)

References 51 publications

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Section: Resultsmentioning

confidence: 99%

“…The Ag-C-NPCs were prepared by the same aerosol synthesis method presented in the previous study . First, a precursor solution was prepared by mixing 0.9 wt % AgNO 3 and 0.3 wt % carbon dispersed in deionized water.…”

Section: Methodsmentioning

confidence: 99%

“…Higher SRR values were identified for the configuration of VO x -C//Ag-C than VO x -C//AC. 11 This phenomenon was due to the lower salt removal capacity and the slower salt removal rate exhibited by AC than by Ag-C. Moreover, the modified PPy@0.5VO x -1C and PPy@5VO x -0.3C (Figure 10d) show stable SRR values versus cycle number than those utilizing the bare 0.5VO x -1C (Figure 10c) and 5VO x -0.3C (Figure 10b).…”

Section: Effects Of Carbon On the Positive Electrodementioning

confidence: 97%

“…To further improve the overall desalination performance of the ECDI cells consisting of VO x -C-NPCs as the positive electrode material, the combination of Ag-C-NPC as the negative electrode material was investigated here, which has been reported to show superior desalination performance in a previous study. 11 On the basis of the charge balance work obtained in the 8 mM LiCl solution, an ECDI configuration consisting of the positive electrodes of 5VO x -0C, 5VO x -0.3C, and 0.5VO x -1C and a negative electrode of Ag-C-NPC with the Ω pn values of 2.54, 3.54, and 2.57 were constructed, respectively. 54 For 5VO x -0C//Ag-C (Figure 5a), 5VO x -0.3C//Ag-C (Figure 5b), and 0.5VO x -1C//Ag-C (Figure 5c) cells, a reversible ion adsorption/release behavior was observed operated at relatively low charge/discharge voltages, 0.8 V/−0.2 V. From Figure 5d, the SAC values of the first cycle were 17.2 ± 1.5, 18.6 ± 0.5, and 27.5 ± 1.4 mg/g for 5VO x -0C//Ag-C, 5VO x -0.3C//Ag-C, and 0.5VO x -1C//Ag-C cells, respectively.…”

Section: Effects Of Carbon On the Positive Electrodementioning

confidence: 99%

“…The Ag-C-NPCs were prepared by the same aerosol synthesis method presented in the previous study. 11 First, a precursor solution was prepared by mixing 0.9 wt % AgNO 3 and 0.3 wt % carbon dispersed in deionized water. The precursor solution was converted into aerosolized droplets by a customized made nebulizer under a N 2 flow with a flow rate at 1.5 L/min.…”

Section: ■ Introductionmentioning

confidence: 99%

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Aerosol Synthesis of Vanadium Oxide-Carbon Hybrid Nanoparticle Clusters for High-Performance Lithium Extraction via Electrochemical Deionization

Chung

Huang

et al. 2022

ACS Sustainable Chem. Eng.

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An aerosol-based synthetic approach is demonstrated for the development of vanadium oxide-carbon hybrid nanoparticle clusters (VO x -C-NPCs) used for the fabrication of a unique electrochemical deionization (ECDI) cell. Hybrid ECDI cells are constructed with a positive electrode of pseudocapacitive VO x -C-NPCs and a negative electrode of battery-like silver− carbon nanoparticle clusters (Ag-C-NPCs). The reversible extraction of Li + ions and the storage of Cl − ions are conducted through Faradaic reactions on VO x -C-NPCs and Ag-C-NPCs, respectively. The surface of the VO x -C-NPC electrodes can be successfully protected by an anion-doped polypyrrole (PPy) film, by which the structural stability of VO x -C-NPC, in terms of the salt adsorption capacity (SAC) retention, is enhanced to 92%. Remarkably high SAC values of the hybrid ECDI cells are achievable in comparison to the reported values in the field: up to 27.5 mg/g for the bare VO x -C//Ag-C cell and 49.3 mg/g for the PPy-protected VO x -C//Ag-C cell. This work provides a prototype study for the rapid and continuous production of high-performance VO x -C-NPCs using aerosol-based synthesis supported by complementary material characterization. The mechanistic understanding of the material synthesis and the corresponding ECDI process shows promise for achieving an optimal deionization performance in terms of SAC and stability.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Effects Of Carbon On the Positive Electrodementioning

confidence: 97%

Section: Effects Of Carbon On the Positive Electrodementioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Aerosol Synthesis of Vanadium Oxide-Carbon Hybrid Nanoparticle Clusters for High-Performance Lithium Extraction via Electrochemical Deionization

Chung

Huang

et al. 2022

ACS Sustainable Chem. Eng.

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MXene‐Based Capacitive Deionization–Strong Competitor Among Faradaic Electrode Systems: Current Status and Future Perspectives

Dubey

2023

ChemistrySelect

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Capacitive deionization (CDI) of brackish water is emerging as a sustainable and energy efficient desalination processes to mitigate the excessive demand of freshwater. Despite that the porous carbon is prime choice in the conventional CDI; its electrostatic interaction‐based limited salt adsorption capacity (SAC, up to 25 mg g−1) has driven the research interest to explore various Faradaic electrodes for attaining maximum SAC (>100 mg g−1) in supplementation with the other desalination metrics. MXene is one of the newly discovered intercalation‐type pseudocapacitive nanostructures, which promised an excellent desalination performance due to its intriguing properties, such as tuneable interlayer spacing, high electrical conductivity, hydrophilicity, and structural integrity. Furthermore, its compositing/heterostructuring with other electro‐active components significantly improves the desalination activity. This article provides a systematic overview of the MXene‐based electrodes utilized in CDI along with the one‐to‐one comparison with other Faradaic systems. Materials design, structure, cell architecture, desalination metrics‐based performance evaluation, and underlying driving forces behind the salty ions removal activity are the main emphasis of discussion to realize MXene‐based efficient CDI desalination. Lastly, the key issues and perspectives of MXene‐based electrode systems are put forward towards new developments and real time implication.

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Dopant-designed conducting polymers for constructing a high-performance, electrochemical deionization system achieving low energy consumption and long cycle life

Huang

Yang

et al. 2023

Chemical Engineering Journal

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Raspberry-structured silver-carbon hybrid nanoparticle clusters for high-performance capacitive deionization

Cited by 9 publications

References 51 publications

Aerosol Synthesis of Vanadium Oxide-Carbon Hybrid Nanoparticle Clusters for High-Performance Lithium Extraction via Electrochemical Deionization

Aerosol Synthesis of Vanadium Oxide-Carbon Hybrid Nanoparticle Clusters for High-Performance Lithium Extraction via Electrochemical Deionization

MXene‐Based Capacitive Deionization–Strong Competitor Among Faradaic Electrode Systems: Current Status and Future Perspectives

Dopant-designed conducting polymers for constructing a high-performance, electrochemical deionization system achieving low energy consumption and long cycle life

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