Symmetric/Asymmetric Supercapacitor Based on the Perovskite-type Lanthanum Cobaltate Nanofibers with Sr-substitution.

Cao, Yi; Lin, Baoping; Sun, Ying; Yang, Hong; Zhang, Xueqin

doi:10.1016/j.electacta.2015.08.033

Cited by 131 publications

(37 citation statements)

References 60 publications

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“…To further study the application of LMO/MnO electrode in supercapacitors, a symmetric supercapacitor has been fabricated in 0.5 M Na 2 SO 4 solution, as shown in Figure 7a. For the symmetric supercapacitor, the operation voltage window (V) doubles to 2 V, larger than other supercapacitors reported previously [20,23], and a high energy density (E) is expected, based on the equation E = t2 t1 IVdt = 0.5C(V1 + V2)(V2 − V1). The deviation of the CV curves from the ideal shape ( Figure 7b) is due to the insufficient time to intercalate/deinsert the active species at each site [31].…”

Section: Electrochemical Performancementioning

confidence: 81%

“…Highly porous LaMnO 3 particles were prepared with polyvinylpyrrolidone (PVP) as a structure directing agent, showing a specific surface area of 47.13 m 2 •g −1 [22]. In addition, a series of perovskite oxides with fiber morphology have been prepared by electrospinning process, displaying great potential as electrode materials of supercapacitors [23,24]. Nevertheless, the methods mentioned above involve multistep processes which are complicated and time-consuming.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Pian

Lei

et al. 2019

Nanomaterials

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La-based perovskite-type oxide is a new type of supercapacitor electrode material with great potential. In the present study, LaMnO3/MnO (LMO/MnO) nano-arrays supported by carbon cloth are prepared via a simple one-step electrodeposition as flexible supercapacitor electrodes. The structure, deposit morphology of LMO/MnO, and the corresponding electrochemical properties have been investigated in detail. Carbon cloth-supported LMO/MnO electrode exhibits a specific capacitance of 260 F·g−1 at a current density of 0.5 A·g−1 in 0.5 M Na2SO4 aqueous electrolyte solution. The cooperative effects of LMO and MnO, as well as the uniform nano-array morphology contribute to the good electrochemical performance. In addition, a symmetric supercapacitor with a wide voltage window of 2 V is fabricated, showing a high energy density of 28.15 Wh·kg−1 at a power density of 745 W·kg−1. The specific capacitance drops to 65% retention after the first 500 cycles due to the element leaching effect and partial flaking of LMO/MnO, yet remains stable until 5000 cycles. It is the first time that La-based perovskite has been exploited for flexible supercapacitor applications, and further optimization is expected.

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Section: Electrochemical Performancementioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Pian

Lei

et al. 2019

Nanomaterials

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“…Electrospun 1D porous bimetallic ZnCo 2 O 4 NTs showed a much higher specific capacitance of 770 F/g at 10 A/g and good cycling stability of only a 10.5% loss after 3000 cycles [242]. Lin et al [243,244,245] reported La x Sr 1 − x Cu 0.1 Mn 0.9 O 3 − δ (0.1 ≤ x ≤ 1) NFs, La x Sr 1 − x CoO 3 − δ (0.3 ≤ x ≤ 1) NFs and La x Sr 1 − x NiO 3 − δ (0.3 ≤ x ≤ 1) NFs, which exhibited excellent electrochemical performance. The supercapacitors with La x Sr 1 − x CoO 3 − δ (0.3 ≤ x ≤ 1) NFs as the electrode exhibit the highest specific capacity of 747.75 F/g at a current density of 2 A/g.…”

Section: Applicationsmentioning

confidence: 99%

Electrospinning of Nanofibers for Energy Applications

et al. 2016

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With global concerns about the shortage of fossil fuels and environmental issues, the development of efficient and clean energy storage devices has been drastically accelerated. Nanofibers are used widely for energy storage devices due to their high surface areas and porosities. Electrospinning is a versatile and efficient fabrication method for nanofibers. In this review, we mainly focus on the application of electrospun nanofibers on energy storage, such as lithium batteries, fuel cells, dye-sensitized solar cells and supercapacitors. The structure and properties of nanofibers are also summarized systematically. The special morphology of nanofibers prepared by electrospinning is significant to the functional materials for energy storage.

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“…However, the energy density in carbon materials is very low. Transition-metal oxides materials are widely applied as supercapacitor electrode materials due to their good thermal stability, high energy density, and the low cost [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of LaMnO₃-reduced graphene oxide or Sr composite and their application in electrochemical properties

Chen

Liu

Jiao

et al. 2020

Mater. Res. Express

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Perovskite structural metal oxides as electrode materials present promising and potential properties due to excellent storage characteristics. Herein, series of perovskite type LaMnO 3 nanopowders were synthesized by the 'sol-gel' method with a heat treatment at different temperatures (700°C-900°C) for different times. The morphology characterization, structures and electrochemical performances were investigated. The preferable sample for electrochemical energy storage device can be obtained at 900°C with 2 h annealing. Furthermore, to improve the properties of the electrode materials, the samples were combined and rectified with reduced graphene oxide (rGO) and strontium (Sr), respectively. The results indicate that the rGO/Sr-doped LaMnO 3 oxide materials have excellent electrochemical properties. These findings are beneficial for the selection and preparation of electrode materials.

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Symmetric/Asymmetric Supercapacitor Based on the Perovskite-type Lanthanum Cobaltate Nanofibers with Sr-substitution.

Cited by 131 publications

References 60 publications

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Electrospinning of Nanofibers for Energy Applications

Synthesis of LaMnO₃-reduced graphene oxide or Sr composite and their application in electrochemical properties

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Symmetric/Asymmetric Supercapacitor Based on the Perovskite-type Lanthanum Cobaltate Nanofibers with Sr-substitution.

Cited by 131 publications

References 60 publications

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Flexible Supercapacitor Electrodes Based on Carbon Cloth-Supported LaMnO3/MnO Nano-Arrays by One-Step Electrodeposition

Electrospinning of Nanofibers for Energy Applications

Synthesis of LaMnO3-reduced graphene oxide or Sr composite and their application in electrochemical properties

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Synthesis of LaMnO₃-reduced graphene oxide or Sr composite and their application in electrochemical properties