Rational design of La0.85Sr0.15MnO3@NiCo2O4 Core–Shell architecture supported on Ni foam for high performance supercapacitors

Lang, Xueqin; Zhang, Haifeng; Xue, Xin; Li, Chuan‐Lu; Sun, Xucong; Liu, Zitang; Nan, Haoshan; Hu, Xiaoying; Tian, Hongwei

doi:10.1016/j.jpowsour.2018.09.040

Cited by 107 publications

(26 citation statements)

References 57 publications

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“…It is commonly used as the bulk resistance of electrochemical systems, which includes electrolyte and internal resistance of the electrode. The second part is the semicircle of the intermediate frequency region, and its diameter corresponds to the charge transfer resistance (R ct ) of the electrode/electrolyte interface [49,50]. The third part of the EIS diagram is the linear portion of the low frequency region, representing the proton diffusion in the active material, as a Warburg impedance W o in the equivalent circuit [51].…”

Section: Electrochemical Performancementioning

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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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: 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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“…Even at a high discharge current density of 10 A g –1 , the energy density remained at 109.09 Wh kg –1 at a power density of 14819.77 W kg –1 . The highest measured energy density considerably exceeded the values of almost all hybrid devices reported, including those based on perovskite oxides − and their composites − charged by oxygen anion intercalation (Table S2). The Ragone plot of the device based on the total mass (active material and current collector) , is shown in Figure S17.…”

mentioning

confidence: 85%

Co₃O₄ Exsolved Defective Layered Perovskite Oxide for Energy Storage Systems

et al. 2020

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We report a Co 3 O 4 exsolved perovskite oxide PrBaMn 1.7 Co 0.3 O 5+δ (Co 3 O 4 −PBMCO) that utilizes the Faradaic transfer of metal oxide and favorable OH − adsorption for an energy storage mechanism, as an active material for hybrid supercapacitors. It demonstrated electrochemical performances supported by both fast oxygen anion intercalation in the interior and Faradaic redox reaction on the surface of the active material, Co 3 O 4 −PBMCO. The flexible hybrid supercapacitor, Co 3 O 4 −PBMCO, coated onto the three-dimensional nickel wire (3D-Ni), exhibited outstanding capacitance (capacity) of 1571 F g −1 (218.54 mAh g −1 ), good rate capability, and cycle stability.With these performances, the hybrid device exhibited a high energy density of 215.80 Wh kg −1 and a power density of 1.48 kW kg −1 , which are significantly higher than those of previously reported perovskite oxide-based electrodes. These results verified that our unique metal oxide exsolved layered perovskite oxide is a promising candidate as an active material for hybrid devices that can be widely applied for smart wearable and implantable devices.

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“…The LaMnO 3-δ electrode possessed the higher specific capacitance of 973.6 F g À 1 at 1 A g À 1 than that of the stoichiometric LaMnO 3 electrode (259.4 F g À 1 ) (Figure 13C). Notably, the hybrid designs composed of perovskite oxides and active materials, including Ag, [257][258][259][260] oxides, [261][262][263][264][265] carbons, [256,266] CPs, [256,267] and others, [268,269] are also an effective manner to improve capacitive performance. The examples about RE-based perovskite oxides and composites are also illustrated in Tables 6 and 7.…”

Section: Re/perovskite Oxidesmentioning

confidence: 99%

Rare Earth‐Based Nanomaterials for Supercapacitors: Preparation, Structure Engineering and Application

Zhou

2022

ChemSusChem

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Supercapacitors (SCs) can effectively alleviate problems such as energy shortage and serious greenhouse effect. The properties of electrode materials directly affect the performance of SCs. Rare earth (RE) is known as “modern industrial vitamins”, and their functional materials have been listed as key strategic materials. In the past few years, the number of scientific reports on RE‐based nanomaterials for SCs has increased rapidly, confirming that adding RE elements or compounds to the host electrode materials with various nanostructured morphologies can greatly enhance their electrochemical performance. Although RE‐based nanomaterials have made rapid progress in SCs, there are very few works providing a comprehensive survey of this field. In view of this, a comprehensive overview of RE‐based nanomaterials for SCs is provided here, including the preparation methods, nanostructure engineering, compounds, and composites, along with their capacitance performances. The structure–activity relationships are discussed and highlighted. Meanwhile, the future challenges and perspectives are also pointed out. This Review can not only provide guidance for the further development of SCs but also arouse great interest in RE‐based nanomaterials in other research fields such as electrocatalysis, photovoltaic cells, and lithium batteries.

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Rational design of La0.85Sr0.15MnO3@NiCo2O4 Core–Shell architecture supported on Ni foam for high performance supercapacitors

Cited by 107 publications

References 57 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

Co₃O₄ Exsolved Defective Layered Perovskite Oxide for Energy Storage Systems

Rare Earth‐Based Nanomaterials for Supercapacitors: Preparation, Structure Engineering and Application

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Rational design of La0.85Sr0.15MnO3@NiCo2O4 Core–Shell architecture supported on Ni foam for high performance supercapacitors

Cited by 107 publications

References 57 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

Co3O4 Exsolved Defective Layered Perovskite Oxide for Energy Storage Systems

Rare Earth‐Based Nanomaterials for Supercapacitors: Preparation, Structure Engineering and Application

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Co₃O₄ Exsolved Defective Layered Perovskite Oxide for Energy Storage Systems