Facile synthesis of perovskite lanthanum aluminate and its green reduced graphene oxide composite for high performance supercapacitors

Raj, T.N. Vinuth; Hoskeri, Priya A.; Muralidhara, H. B.; Manjunatha, C; Kumar, K. Yogesh; Raghu, M.S.

doi:10.1016/j.jelechem.2020.113830

Cited by 102 publications

(48 citation statements)

References 39 publications

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“…The asymmetric SCs with the above composite showed a high energy density of 50 Wh kg –1 at the power density of 18 kW kg –1 . In addition, the specific capacitance of 721 F g –1 was observed for the composite of RGO and LaAlO 3 , which was obviously higher than that of 100 F g –1 for LaAlO 3 . Except for the RGO, NGO with an abundant active site was also selected as the La-based perovskite oxide supporter.…”

Section: Advances Of a Single Perovskite Oxide For Pseudocapacitorsmentioning

confidence: 97%

“…133 In addition, the specific capacitance of 721 F g −1 was observed for the composite of RGO and LaAlO 3 , which was obviously higher than that of 100 F g −1 for LaAlO 3 . 134 Except for the RGO, NGO with an abundant active site was also selected as the La-based perovskite oxide supporter. As reported, the electrostatic attraction between NGO with a negative charge and LaMnO 3 with a positive charge was beneficial to form a 3D structure.…”

Section: B Elementmentioning

confidence: 99%

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Advances and Perspectives for the Application of Perovskite Oxides in Supercapacitors

Meng

Lü

et al. 2021

Energy Fuels

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Perovskite oxides, with the general formula of ABO 3 , are considered as one of the promising candidates of electroactive materials for supercapacitors (SCs) as a result of their stable structure, rich oxygen vacancies, and highly reversible redox capability. According to the oxygen ion intercalation mechanism, the concentration of oxygen vacancy in perovskite oxides is proportional to the capacitance of SCs. Meanwhile, various strategies, e.g., doping, compositing, and specific synthesis processes, are proposed to increase the capacitance for perovskite oxide electrodes. Herein, this review mainly emphasizes the relationship between the energy storage mechanism and the key role of oxygen vacancies in perovskite. In terms of structural design, preparation methods, and various approaches to improve the electrochemical performance of the latest reported perovskite-type oxides for SCs, we give a detailed discussion and summarize the characteristics of them, which is expected to have impact on the fields of perovskite oxide science. Furthermore, we pointed out the challenges and perspectives of perovskite-oxide-based SCs.

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Section: Advances Of a Single Perovskite Oxide For Pseudocapacitorsmentioning

confidence: 97%

Section: B Elementmentioning

confidence: 99%

Advances and Perspectives for the Application of Perovskite Oxides in Supercapacitors

Meng

Lü

et al. 2021

Energy Fuels

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“…Scientists throughout the world are working on the creation of energy storage devices in the form of supercapacitors, lithium ion based batteries along with fuel cells in recognition of enormous meaning of wellbeing, eco-friendliness, and sustainability regarding energy and environment zone [1]. Considering the rising use of conventional fossil fuels, exists a growing demand for sustainable energy sources, and there have been significant research efforts into long-lasting, highly effective, and environmentally friendly energy sources [2,3]. Usually, Flywheels, electrostatic capacitors, along fuel based cells, lithium ion sort batteries, and electrochemical property based capacitors are only a few examples of the diverse materials used as energy storage [4].…”

Section: Introductionmentioning

confidence: 99%

Lead integrated two-dimensional (MXene/PbCrO₄) nanocomposite designed for energy storage and photocatalytic degradation applications

Akram,

Rani,

Batool

et al. 2023

Phys. Scr.

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Supercapacitors (SCs), among other electrochemical device applications, require materials with maximal energy storage capacity, and the stacked two-dimensional titanium carbide MXene (Ti3C2) sparked the development of these materials. This paper embellished to present smoothed MXene/PbCrO4 nanocomposite via co-precipitation method along with modified sol–gel achieved lead chromate (PbCrO4) nano-crystalline for energy storage and photocatalytic applications using ethylene glycol as connecting agent to restrict nano-particle growth. It is evident from photoluminescence spectra that peak intensity has decreased, whilst Raman spectra show the presence of MXene and lead peaks in the nanocomposite, whereas FTIR has revealed the presence of functional groups in synthesized material. According to calculations made using EIS spectra, the charge transfer resistance is 1.4 Ω, with the electron shift rate constant Kapp value 6.98 10−9 cm s−1. Additionally, the electrochemical performance of the designed material in supercapacitors at 0.3Ag−1 of current density indicates elevated capacitance of 5408 Fg−1 with scan rate of 10 mV s−1 using 1MKOH aqueous electrolyte, resulting in power and energy densities of 2991.8 W kg−1 and 110.1 Wh K−1 g−1, respectively. UV–vis spectra shows the nanocomposite has a 1.86 eV band gap that, in the presence of direct sunlight, might cause the destruction of MB dye at a rate of 92.79%. These findings suggested that the newly created MXene/PbCrO4 nanocomposite demonstrates evidence of substantial features as compared to single materials has potential as an electrode material for supercapacitors as well as best photocatalyst for the degradation of organic pollutants regarding water purification.

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“…The cubic crystal structure of a meso porous solid-state symmetric capacitor cell (STO//STO) is mostly preferred to fabricate the energy-storage devices, owing to their outstanding electrochemical behavior and good capacitance values of 212.5 F g −1 @ 0.63 A g −1 and 158.5 F g −1 @ 2.5 A g −1 [ 10 ]. The lanthanum-aluminate-based reduced graphene oxide (LaAlO 3 /RGO) composites are widely deliberated electrode materials that demonstrate superior electrochemical performance in supercapacitor applications due to their hybrid structure, which leads to fast electron transport and the hierarchical RGO that prevents the aggregation of LaAlO 3 [ 11 ]. The meso porous morphology of LaFeO 3 perovskite has been synthesized by the sol-gel method, and exhibited a reasonable specific capacitance value of 241.3 F g −1 @ 1 A g −1 [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

High-Performance-Based Perovskite-Supported Nanocomposite for the Development of Green Energy Device Applications: An Overview

Chen

Ramachandran²,

Anushya³

et al. 2021

Nanomaterials

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Perovskite-based electrode catalysts are the most promising potential candidate that could bring about remarkable scientific advances in widespread renewable energy-storage devices, especially supercapacitors, batteries, fuel cells, solid oxide fuel cells, and solar-cell applications. This review demonstrated that perovskite composites are used as advanced electrode materials for efficient energy-storage-device development with different working principles and various available electrochemical technologies. Research efforts on increasing energy-storage efficiency, a wide range of electro-active constituents, and a longer lifetime of the various perovskite materials are discussed in this review. Furthermore, this review describes the prospects, widespread available materials, properties, synthesis strategies, uses of perovskite-supported materials, and our views on future perspectives of high-performance, next-generation sustainable-energy technology.

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Facile synthesis of perovskite lanthanum aluminate and its green reduced graphene oxide composite for high performance supercapacitors

Cited by 102 publications

References 39 publications

Advances and Perspectives for the Application of Perovskite Oxides in Supercapacitors

Advances and Perspectives for the Application of Perovskite Oxides in Supercapacitors

Lead integrated two-dimensional (MXene/PbCrO₄) nanocomposite designed for energy storage and photocatalytic degradation applications

High-Performance-Based Perovskite-Supported Nanocomposite for the Development of Green Energy Device Applications: An Overview

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Facile synthesis of perovskite lanthanum aluminate and its green reduced graphene oxide composite for high performance supercapacitors

Cited by 102 publications

References 39 publications

Advances and Perspectives for the Application of Perovskite Oxides in Supercapacitors

Advances and Perspectives for the Application of Perovskite Oxides in Supercapacitors

Lead integrated two-dimensional (MXene/PbCrO4) nanocomposite designed for energy storage and photocatalytic degradation applications

High-Performance-Based Perovskite-Supported Nanocomposite for the Development of Green Energy Device Applications: An Overview

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Product

Resources

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Lead integrated two-dimensional (MXene/PbCrO₄) nanocomposite designed for energy storage and photocatalytic degradation applications