An integrated strategy for improving the desalination performances of activated carbon-based capacitive deionization systems

Chen, Yijing; Liu, Ching-Fang; Hsu, Chun-Chia; Hu, Chi‐Chang

doi:10.1016/j.electacta.2019.02.011

Cited by 29 publications

(6 citation statements)

References 33 publications

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“…The cell is discharged to regenerate the electrodes by either shorting them or reversing the cell polarity, releasing the stored ions into a brine stream and recovering the stored energy. [12][13][14] Although there are several parameters influencing CDI performance, such as device design (plate size, plate spacing and operation mode), operational factors (applied voltage, flow rate) and environmental factors (including concentration of ions in the solution, target ion properties, temperature of the solution and pH value of the solution), 15,16 the electrode material is the main controlling factor of CDI performance. 17,18 Conventional carbon electrode materials, such as activated carbon (AC), carbon nanotubes (CNTs), carbon fibers, carbon aerogels, and graphene, have recently received considerable interest for CDI applications.…”

Section: Introductionmentioning

confidence: 99%

Water defluoridation using Al/Fe/Ti ternary metal oxide-loaded activated carbon by capacitive deionization

Alfredy

Elisadiki

Kim

et al. 2023

Environ. Sci.: Water Res. Technol.

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Section: Introductionmentioning

confidence: 99%

Water defluoridation using Al/Fe/Ti ternary metal oxide-loaded activated carbon by capacitive deionization

Alfredy

Elisadiki

Kim

et al. 2023

Environ. Sci.: Water Res. Technol.

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“…It is also commonly considered an environmentally friendly, economical, and easy‐operating technique. [ 20–23 ]…”

Section: Introductionmentioning

confidence: 99%

Binder‐Free Wood Converted Carbon for Enhanced Water Desalination Performance

Neupane

Zia

et al. 2022

Adv Funct Materials

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The design and synthesis of high‐performance and economical carbon electrodes play a critical role in developing energy‐efficient water desalination technologies. As a sustainable approach, low‐cost and abundant biomass materials are promising candidates to prepare porous carbon for capacitive deionization. In this study, binder‐free porous carbon sheets are successfully prepared using natural balsa, pine, and basswood by thermal carbonization and treated by chemical activation. The carbon electrode materials converted from balsa and pine exhibit a comparable salt adsorption performance by capacitive deionization due to the extensive surface area, substantial electrical property, and superior hydrophilic performance. The following activation treatment of the balsa‐converted carbon further enhances the surface and electrical properties and benefits the desalination performance. The salt adsorption capacity of the activated balsa electrode exhibits 12.45 mg g−1. Additionally, 19.52 mg g−1 Pb2+ and 20.06 mg g−1 Cr3+ heavy metal adsorption capacity is also observed with the activated balsa electrode in 100 mg L−1 PbCl2 and 50 mg L−1 CrCl3, respectively. To the best of authors’ knowledge, this is the highest NaCl adsorption capacity performance reported thus far by using pure wood converted carbon as the electrode, and these promising results indicate that activated balsa is an extraordinary material for water desalination.

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“…Through the hybridization of carbon-based electrode materials with metal oxides (e.g., manganese dioxide/activated carbon composites, ,,, titanium oxide/activated carbon composites), , significant improvement in deionization capabilities is achievable because of the creation of highly reversible redox reactions in the carbon nanostructure. Accordingly, electrochemical deionization (ECDI), an innovative deionization technology utilizing the CDI and/or Faradaic desalination materials to construct the desalination cell in the symmetric, asymmetric, or hybrid designs, is established with unique advantages of high salt removal capacity and energy efficiency. ,− …”

Section: Introductionmentioning

confidence: 99%

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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An integrated strategy for improving the desalination performances of activated carbon-based capacitive deionization systems

Cited by 29 publications

References 33 publications

Water defluoridation using Al/Fe/Ti ternary metal oxide-loaded activated carbon by capacitive deionization

Water defluoridation using Al/Fe/Ti ternary metal oxide-loaded activated carbon by capacitive deionization

Binder‐Free Wood Converted Carbon for Enhanced Water Desalination Performance

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

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