Hierarchically yolk-shell porous carbon sphere as an electrode material for high-performance capacitive deionization

Wei, Xujie; Li, Xiujuan; Lv, Cuicui; Mo, Xiaoping; Li, Kexun

doi:10.1016/j.electacta.2020.136590

Cited by 31 publications

(8 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The same sample showed an SAC up to 12.50 and 16.50 mg/g in NaCl solution at cell voltages of 1.2 and 1.4 V, respectively. The similar procedure for carbonization at different temperatures was employed by Maniscalco et al (2020) and Wei et al (2020). The former reported synthesis of almond shell derived biochar by pyrolysis with temperature ranging from 800 to 1000 C followed by CO 2 activation.…”

Section: Biomass-derived Carbonmentioning

confidence: 99%

Recent progress in materials and architectures for capacitive deionization: A comprehensive review

Datar

Mane

Jha

2022

Water Environment Research

View full text Add to dashboard Cite

Capacitive deionization is an emerging and rapidly developing electrochemical technique for water desalination across the globe with exponential growth in publications. There are various architectures and materials being explored to obtain utmost electrosorption performance. The symmetric architectures consist of the same material on both electrodes, while asymmetric architectures have electrodes loaded with different materials. Asymmetric architectures possess higher electrosorption performance as compared with that of symmetric architectures owing to the inclusion of either faradaic materials, redox‐active electrolytes, or ion specific pre‐intercalation material. With the materials perspective, faradaic materials have higher electrosorption performance than carbon‐based materials owing to the occurrence of faradaic reactions for electrosorption. Moreover, the architecture and material may be tailored in order to obtain desired selectivity of the target component and heavy metal present in feed water. In this review, we describe recent developments in architectures and materials for capacitive deionization and summarize the characteristics and salt removal performances. Further, we discuss recently reported architectures and materials for the removal of heavy metals and radioactive materials. The factors that affect the electrosorption performance including the synthesis procedure for electrode materials, incorporation of additives, operational modes, and organic foulants are further illustrated. This review concludes with several perspectives to provide directions for further development in the subject of capacitive deionization. Practitioner Points Capacitive deionization (CDI) is a rapidly developing electrochemical water desalination technique with exponential growth in publications. Faradaic materials have higher salt removal capacity (SAC) because of reversible redox reactions or ion‐intercalation processes. Combination of CDI with other techniques exhibits improved selectivity and removal of heavy metals. Operational parameters and materials properties affect SAC. In future, comprehensive experimentation is needed to have better understanding of the performance of CDI architectures and materials.

show abstract

Section: Biomass-derived Carbonmentioning

confidence: 99%

Recent progress in materials and architectures for capacitive deionization: A comprehensive review

Datar

Mane

Jha

2022

Water Environment Research

View full text Add to dashboard Cite

show abstract

“…Furthermore, the previous mesoporous carbon synthesis involving hard templating should employ a strong acid or alkaline solution to derive the mesopore by etching an employed SiO 2 template. 21,26,[45][46][47][48][49]80 By contrast, our solgel route using the fluorine-containing polymers provides an innovative approach to build the porous carbon material suitable for an aqueous-based supercapacitor conveniently and safely.…”

Section: Electrochemical Properties and Performancementioning

confidence: 99%

“…The previous sol-gel routes employing a SiO 2 template had to use a hazardous acid or alkaline media to discard the template. 21,26,[45][46][47][48][49] Etching by the fluorine-containing precursors was actively employed to design a safe and convenient SiO 2 removal process using the templating method.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of hydrophilic hierarchical carbon via autonomous SiO ₂ etching by fluorinated polymers for aqueous supercapacitor

2021

View full text Add to dashboard Cite

show abstract

“…as hard templates, which are mixed with carbon sources to prepare precursors, carbonized at high temperatures, and then the hard sphere templates are removed by erosion. Wei et al [ 30 ] used a silica hard sphere template and phenolic resin as the carbon source to prepare porous carbon spheres with layered nanostructures in yolk shells at different temperatures and showed excellent capacitance and low transfer resistance in electrochemical tests. Zhang et al [ 31 ] prepared core-shell hybridized zeolite imidazolate skeleton-derived layered carbon using zeolite as a hard template, 2-methylimidazole as a protective agent, and dopamine as a carbon source.…”

Section: Introductionmentioning

confidence: 99%

Preparation of N-Doped Layered Porous Carbon and Its Capacitive Deionization Performance

et al. 2023

View full text Add to dashboard Cite

In this study, N-doped layered porous carbon prepared by the high-temperature solid-state method is used as electrode material. Nano calcium carbonate (CaCO3) (40 nm diameter) is used as the hard template, sucrose (C12H22O11) as the carbon source, and melamine (C3H6N6) as the nitrogen source. The materials prepared at 850 °C, 750 °C, and 650 °C are compared with YP-50F commercial super-activated carbon from Japan Kuraray Company. The electrode material at 850 °C pyrolysis temperature has a higher specific surface area and more pores suitable for ion adsorption. Due to these advantages, the salt adsorption capacity (SAC) of the N-doped layered porous carbon at 850 °C reached 12.56 mg/g at 1.2 V applied DC voltage, 500 mg/L initial solution concentration, and 15 mL/min inlet solution flow rate, which is better than the commercial super activated carbon as a comparison. In addition, it will be demonstrated that the N-doped layered porous carbon at 850 °C has a high salt adsorption capacity CDI performance than YP-50F by studying parameters with different applied voltages and flow rates as well as solution concentrations.

show abstract

Hierarchically yolk-shell porous carbon sphere as an electrode material for high-performance capacitive deionization

Cited by 31 publications

References 54 publications

Recent progress in materials and architectures for capacitive deionization: A comprehensive review

Recent progress in materials and architectures for capacitive deionization: A comprehensive review

Synthesis of hydrophilic hierarchical carbon via autonomous SiO ₂ etching by fluorinated polymers for aqueous supercapacitor

Preparation of N-Doped Layered Porous Carbon and Its Capacitive Deionization Performance

Contact Info

Product

Resources

About

Hierarchically yolk-shell porous carbon sphere as an electrode material for high-performance capacitive deionization

Cited by 31 publications

References 54 publications

Recent progress in materials and architectures for capacitive deionization: A comprehensive review

Recent progress in materials and architectures for capacitive deionization: A comprehensive review

Synthesis of hydrophilic hierarchical carbon via autonomous SiO 2 etching by fluorinated polymers for aqueous supercapacitor

Preparation of N-Doped Layered Porous Carbon and Its Capacitive Deionization Performance

Contact Info

Product

Resources

About

Synthesis of hydrophilic hierarchical carbon via autonomous SiO ₂ etching by fluorinated polymers for aqueous supercapacitor