Characterization and electrochemical properties of Carbon/CeO2 composites prepared using a hydrothermal method

Hunpratub, Sitchai; Chullaphan, Tossaporn; Chumpolkulwong, Somchai; Chanlek, Narong; Phokha, Sumalin

doi:10.1016/j.matchemphys.2023.127820

Cited by 12 publications

(4 citation statements)

References 58 publications

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“…Even when the current density is magnified to 20 A g −1 , a capacity of 84 F g −1 is still retained (the capacitance retention rate is 60%, corresponding to the initial value at 1 A g −1 ), indicating its high rate capability. It is worth noting that the capacitive performance of Ce(COOH) 3 holds a significant advantage among the previously reported Ce-based electrodes, such as Ce(OH) 3 (75 F g −1 at 5 mV s −1 ) [34], graphene/CeO 2 (89 F g −1 at 1 A g −1 ) [35], Ce-BTC (94.8 F g −1 at 1 A g −1 ) [36], Ce(HPO 4 ) 2 .xH 2 O (114 F g −1 at 0.2 A g −1 ) [21], and carbon/CeO 2 -PVP (123.8 F g −1 at 0.25 A g −1 ) [37]. Such superior specific capacitance benefits from the unique crystal structure and special 3D flower-like morphology that offer incredibly rich Ce 3+ /Ce 4+ active sites.…”

Section: Resultsmentioning

confidence: 99%

Ultra-High Cycling Stability of 3D Flower-like Ce(COOH)3 for Supercapacitor Electrode via a Facile and Scalable Strategy

He,

Wang,

Yang

et al. 2023

Molecules

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An electrode material with high performance, long durability, and low cost for supercapacitors has long been desired in academia and industry. Among all the factors that affect the electrochemical performance and cycling stability of electrode materials, the morphology and intrinsic structure characteristics are the most important. In this study, a novel 3D flower-like Ce(COOH)3 electrode material was designed by taking advantage of the Ce3+ and -COOH groups and fabricated by a one-pot microwave-assisted method. The morphology and structure characteristics of the sample were examined by SEM, EDS, TEM, XRD, FT-IR, XPS, N2 adsorption/desorption techniques, and the electrochemical behaviors were investigated in a three-electrode configuration. The Ce(COOH)3 electrode presents an excellent specific capacitance of 140 F g−1 at 1 A g−1, higher than many other previously reported Ce-based electrodes. In addition, it delivers high rate capability that retains 60% of its initial capacitance when the current density is magnified 20 times. Dramatically, the Ce(COOH)3 electrode exhibits an ultra-high cycling stability with capacitance retention of 107.9% after 60,000 cycles, which is the highest durability among reported Ce–organic compound electrodes to the best of our knowledge. The excellent electrochemical performance is ascribed to its intrinsic crystal structure and unique morphology. This work indicates that the 3D flower-like Ce(COOH)3 has significant potential for supercapacitor applications and the facile and scalable synthesis strategy can be extended to produce other metal–organic composite electrodes.

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Section: Resultsmentioning

confidence: 99%

Ultra-High Cycling Stability of 3D Flower-like Ce(COOH)3 for Supercapacitor Electrode via a Facile and Scalable Strategy

He,

Wang,

Yang

et al. 2023

Molecules

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“…The Ce 3d binding energies for HSiW/CeO 2 were observed at 882.1, 885.4, 888.8, 898.0, 900.7, 902.8, 907.2, and 916.4 eV (Figure 3a), which were attributed to two different oxidation states of Ce: Ce 3+ (including 885.4 and 902.8 eV) and Ce 4+ (including 882.1, 888.8, 898.0, 900.7, 907.2, and 916.4 eV) [21,22]. Similarly, the O 1s binding energies for HSiW/CeO 2 were observed at 529.6, 531.2, and 532.6 eV (Figure 3b).…”

Section: Xpsmentioning

confidence: 99%

Catalytic Oxidation of Chlorobenzene over HSiW/CeO2 as a Co-Benefit of NOx Reduction: Remarkable Inhibition of Chlorobenzene Oxidation by NH3

Dong,

Jiang,

Shen

et al. 2024

Materials

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There is an urgent need to develop novel and high-performance catalysts for chlorinated volatile organic compound oxidation as a co-benefit of NOx. In this work, HSiW/CeO2 was used for chlorobenzene (CB) oxidation as a co-benefit of NOx reduction and the inhibition mechanism of NH3 was explored. CB oxidation over HSiW/CeO2 primarily followed the Mars–van–Krevelen mechanism and the Eley-Rideal mechanism, and the CB oxidation rate was influenced by the concentrations of surface adsorbed CB, Ce4+ ions, lattice oxygen species, gaseous CB, and surface adsorbed oxygen species. NH3 not only strongly inhibited CB adsorption onto HSiW/CeO2, but also noticeably decreased the amount of lattice oxygen species; hence, NH3 had a detrimental effect on the Mars–van–Krevelen mechanism. Meanwhile, NH3 caused a decrease in the amount of oxygen species adsorbed on HSiW/CeO2, which hindered the Eley-Rideal mechanism of CB oxidation. Hence, NH3 significantly hindered CB oxidation over HSiW/CeO2. This suggests that the removal of NOx and CB over this catalyst operated more like a two-stage process rather than a synergistic one. Therefore, to achieve simultaneous NOx and CB removal, it would be more meaningful to focus on improving the performances of HSiW/CeO2 for NOx reduction and CB oxidation separately.

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“…In the latter case, spray pyrolysis deposition (SPD) allows the formation of thin CeO 2 layers [272], facilitating the development of advanced devices such as sensor elements [273]. The CeO 2 -based nanomaterials have recently encountered other applications for energy storage, like supercapacitors [274][275][276][277][278], environmental applications [279], Zn-air batteries [280,281], etc.…”

Section: Cerium Compounds For Alternative Energy Sourcesmentioning

confidence: 99%

“…Additionally, spray freezing methods have been developed as an alternative to the spray pyrolysis approach [285]. Other alternative methods for CeO 2 -based nanomaterials synthesis are the hydrothermal method, proposed by Hunpratub et al [277], and gel combustion method, proposed recently by various authors [286][287][288][289].…”

Section: Cerium Compounds For Alternative Energy Sourcesmentioning

confidence: 99%

Innovative Applications of Cerium Oxide-Based Materials in Civil Engineering, Automation, and Energy Sectors

Kozhukharov,

Girginov,

Lilova

et al. 2024

Cerium - Chemistry, Technology, Geology, Soil Science and Economics

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Cerium oxide materials exhibit remarkable properties, positioning them as highly effective, environmentally friendly solutions across diverse applications. This chapter provides a comprehensive overview of fundamental concepts and technological methodologies related to cerium oxide (CeO2) and doped ceria-based materials. Emphasis is placed on electrochemical deposition, spray pyrolysis, and the sol-gel approach for synthesizing thin and thick layers of ceria. The versatility of these materials is explored, spanning from corrosion protection layers and specialized ceramic elements for sensor applications to components for solid oxide fuel cells (SOFCs) and electrodes for water-splitting cells. Additionally, the chapter delves into the promising applications of recently developed ceria-based nanomaterials in various fields, marking some advanced methods for CeO2-based materials synthesis. The key findings are succinctly summarized in the concluding section.

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Characterization and electrochemical properties of Carbon/CeO2 composites prepared using a hydrothermal method

Cited by 12 publications

References 58 publications

Ultra-High Cycling Stability of 3D Flower-like Ce(COOH)3 for Supercapacitor Electrode via a Facile and Scalable Strategy

Ultra-High Cycling Stability of 3D Flower-like Ce(COOH)3 for Supercapacitor Electrode via a Facile and Scalable Strategy

Catalytic Oxidation of Chlorobenzene over HSiW/CeO2 as a Co-Benefit of NOx Reduction: Remarkable Inhibition of Chlorobenzene Oxidation by NH3

Innovative Applications of Cerium Oxide-Based Materials in Civil Engineering, Automation, and Energy Sectors

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