CeO2−x quantum dots decorated nitrogen-doped hollow porous carbon for supercapacitors

Kar, Tathagata; Casales-Díaz, M.; Ramos-Hernández, J.J.; Sotelo-Mazón, O.; Henao, John; Rodríguez, Socorro Valdez; Godavarthi, Srinivas; Liu, Shude; Yamauchi, Yusuke; Kesarla, Mohan Kumar

doi:10.1016/j.jcis.2022.04.114

Cited by 13 publications

(4 citation statements)

References 41 publications

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“…210 As a result, compositing CeO 2 with conductive polymers, carbon materials and their derivatives provides another effective and convenient method of increasing pseudocapacitive energy storage ability. 211 In Table 6, the typical electrochemical parameters of CeO 2 composites are compared to those of pure CeO 2 . It can be seen that CeO 2 composites have a greater specific capacitance than pure CeO 2 .…”

Section: Pseudocapacitive Applicationsmentioning

confidence: 99%

Sustainability applications of rare earths from metallurgy, magnetism, catalysis, luminescence to future electrochemical pseudocapacitance energy storage

et al. 2023

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Section: Pseudocapacitive Applicationsmentioning

confidence: 99%

Sustainability applications of rare earths from metallurgy, magnetism, catalysis, luminescence to future electrochemical pseudocapacitance energy storage

et al. 2023

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“…Integrating pseudocapacitive materials on carbon‐based materials to fabricate composite electrode materials has shown great potentials in energy storage applications. Kar et al [ 39 ] explored CeO 2 quantum dots (QD)/hollow porous N‐doped carbon framework composite (CeO 2− x QD@PHC), in which ZIF‐8 was utilized as a precursor. The CeO 2− x QD@PHC composite electrode displayed a specific capacitance of 139.77 F g −1 at the current density of 0.25 A g −1 , much higher than that of the PHC counterpart, as shown in Figure .…”

Section: Ac‐based Electrode Materialsmentioning

confidence: 99%

mentioning

confidence: 99%

Carbon Nanomaterials‐Enabled High‐Performance Supercapacitors: A Review

Zhao

Liu

et al. 2022

Adv Energy and Sustain Res

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Supercapacitors (SCs), an important kind of electrochemical energy storage device, are featured with high power density, rapid charging and discharging, and ultralong cycling lifespan and have been widely applied in multiscenario energy storage and output systems, such as portable consumer electronics, electric vehicles, and reservoir setups for green and sustainable energy resources. Among their components, electrode materials are of primary importance in dictating their performances. Owing to good electric conductivity, achievably large specific surface area, low cost, chemical stability, and easy loading with other electrochemically active species, various carbon nanomaterials, including activated carbons, carbon nanotubes, graphene, and other porous carbons, are promising electrode materials in the fabrication of high-performance SCs. In fact, the past decade has witnessed enormous efforts in the development of highperformance carbon-based SC electrode materials and great progresses achieved in the field. In this review, recent advances on these carbon-based SCs are summarized through a number of selected representative works. In each one, the unique preparation method, structural features, and their correlations to electrochemical properties and final SC performance are presented and discussed. At the end of the review, the challenges and future developing prospects are briefly outlined.

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“…The tuning of particle size was reported to play an important role in determining the physical, chemical, and biological properties of CeO 2 (Hosseini and Mozafari, 2020;Luneau et al, 2023). Particularly, CeO 2 quantum dots (QDs) have drawn significant attention according to the size effect, which guaranteed enhanced surface exposure and profound structure modulation (Younis et al, 2013;Kong et al, 2018;Kar et al, 2022). CeO 2 QDs anchored to Ag/cellulose or La-doped CeO 2 QDs exhibit improved antibacterial ability (Ikram et al, 2021;Shahzadi et al, 2023).…”

Section: Introductionmentioning

confidence: 99%

Antibacterial and anti-inflammatory polyethyleneimine/polyacrylic acid hydrogel loaded with CeO2 quantum dots for wet tissue wound dressings

Hou,

Lin,

Xia

et al. 2024

Front. Mater.

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Searching for an antibacterial and anti-inflammatory dressing that can stably adhere to wet tissues remains a momentous clinical challenge, especially in the context of treatment failure due to multi-drug-resistant bacteria. Using a hard template method in combination with an in situ chelating strategy, three-dimensional nitrogen-doped graded porous carbon anchored 1.5–2.5 nm CeO2 quantum dots (CeO2-QDs) were tailor-designed in this study. Using the size effect, CeO2-QDs have a higher percentage of Ce3+ and oxygen vacancies that could amplify their antibacterial effects. Polyethyleneimine/polyacrylic acid (PEA) powder could self-gel and be adhesive due to its strong physical interactions, which make it an ideal carrier for CeO2-QDs. PEA@50 (mg/mL) CeO2-QDs hydrogel and PEA@75 (mg/mL) CeO2-QDs hydrogel with moderate doses of CeO2-QDs show a superior antibacterial effect against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) strains. Furthermore, PEA@50CeO2-QDs hydrogels possess excellent anti-inflammatory capacity through their antioxidant activity, which could promote macrophage M2 phenotype polarization. More importantly, cytotoxicity assays on L929 fibroblasts show that PEA@CeO2-QDs hydrogels have no significant toxicity, and a significant proliferative effect could be observed. Overall, PEA@50CeO2-QDs hydrogels have the potential to become a multifunctional wet tissue dressing with anti-inflammatory and antiseptic properties to promote the healing of infected wounds.

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CeO2−x quantum dots decorated nitrogen-doped hollow porous carbon for supercapacitors

Cited by 13 publications

References 41 publications

Sustainability applications of rare earths from metallurgy, magnetism, catalysis, luminescence to future electrochemical pseudocapacitance energy storage

Sustainability applications of rare earths from metallurgy, magnetism, catalysis, luminescence to future electrochemical pseudocapacitance energy storage

Carbon Nanomaterials‐Enabled High‐Performance Supercapacitors: A Review

Antibacterial and anti-inflammatory polyethyleneimine/polyacrylic acid hydrogel loaded with CeO2 quantum dots for wet tissue wound dressings

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