Synergistic effect of rare-earth elements on the dielectric properties and reliability of BaTiO 3 -based ceramics for multilayer ceramic capacitors

Gong, Huiling; Wang, Xiaohui; Zhang, Shaopeng; Li, Longtu

doi:10.1016/j.materresbull.2015.07.010

Cited by 53 publications

(32 citation statements)

References 38 publications

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“…However, according to the detailed data as shown in Table 4 , the specific capacitance of mesoporous MnO 2 /silver nanowires reached its maximum in 0.2 M KI electrolyte. This may be due to the synergistic effect of the electrical conductivity of the electrode and the electrolyte, the conductivity of the composite electrode and the ion activity of the electrolyte were worked together to the electrode materials, make sure that it has a good ratio discharge property under different test conditions [ 60 , 61 ]. Finally, the mesoporous MnO 2 /silver nanowires show a good ratio discharge property in 0.2 M KI electrolyte, with the specific capacitance reaching to 208.1, 200.5 and 191.7 F/g at 0.1, 0.2 and 0.5 A/g, respectively.…”

Section: Resultsmentioning

confidence: 99%

High Rate Performance Nanocomposite Electrode of Mesoporous Manganese Dioxide/Silver Nanowires in KI Electrolytes

Jiang

Cui

et al. 2015

Nanomaterials

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In recent years, manganese dioxide has become a research hotspot as an electrode material because of its low price. However, it has also become an obstacle to industrialization due to its low ratio of capacitance and the low rate performance which is caused by the poor electrical conductivity. In this study, a KI solution with electrochemical activity was innovatively applied to the electrolyte, and we systematically investigated the rate performance of the mesoporous manganese dioxide and the composite electrode with silver nanowires in supercapacitors. The results showed that when mesoporous manganese dioxide and mesoporous manganese dioxide/silver nanowires composite were used as electrodes, the strength of the current was amplified five times (from 0.1 to 0.5 A/g), the remaining rates of specific capacitance were 95% (from 205.5 down to 197.1 F/g) and 92% (from 208.1 down to 191.7 F/g) in the KI electrolyte, and the rate performance was much higher than which in an Na2SO4 electrolyte with a remaining rate of 25% (from 200.3 down to 49.1 F/g) and 60% (from 187.2 down to 113.1 F/g). The morphology and detail structure were investigated by Scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectrometry and Nitrogen adsorption-desorption isotherms. The electrochemical performance was assessed by cyclic voltammograms, galvanostatic charge/discharge and electrochemical impedance spectroscopy.

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Section: Resultsmentioning

confidence: 99%

High Rate Performance Nanocomposite Electrode of Mesoporous Manganese Dioxide/Silver Nanowires in KI Electrolytes

Jiang

Cui

et al. 2015

Nanomaterials

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“…45 • Catalytic combustion of natural gas (NG) or methane [46][47][48] • Reduction and control of emissions by catalytic converters in automotive exhausts of diesel vehicles 49,50 • Use as electrodes for solid oxide fuel batteries 51 • Use in a way to provide membrane properties 52 These application areas can be briefly seen in Table 2. Moreover, perovskites are commonly in use as superconductors, 54 in thermo electric devices, 55 as thick film resistors in nanoelectronics, 56 as highly sensitive photoswitches, 57 as dielectric resonators, 58 as thick film thermistors, 59 as polycrystalline organic and inorganic microwires, 60 for multilayer ceramic capacitors, 61 membrane as an electrochemical sensor for detection of amino acids, 62 as catalyst for lithium air batteries, 63 as ultrasonic transducers, 64 and for hydrogenation and hydrogenolysis of hydrocarbons (HC). 65 In the pioneering work of Voorhoeve et al 66 , referring to Meadowcraft, 67 cobalt mixed perovskite materials were used as electrode oxidation reducers, and at the same time, these could be used for the treatment of automobiles' exhaust gases.…”

Section: Perovskites and Applicationsmentioning

confidence: 99%

Perovskite catalysts for methane combustion: applications, design, effects for reactivity and partial oxidation

Başhan

Üst

2019

Int J Energy Res

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Summary This review underlines the importance of the developments in perovskite catalysts for methane combustion from the past up to the present. In this review, after a general and brief introduction to perovskites, the mechanisms of catalytic combustion of methane have been included. Moreover, current studies on perovskites have been summarized including the effects of substitutions, doped perovskites, perovskite preparation methods, and the effect of sulfur presence on perovskite catalysts. Besides, recent studies on perovskite oxides and phenomenon of oxygen (O2) deficiency, porous perovskite oxides, and nanostructured perovskites have been conducted. In addition, partial oxidation of methane (POM) has been reviewed. The loss of active component during the POM reaction can take place in the nickel catalyst, in particular. Since nickel has a lower melting point than noble metals and other active components, such as Co and Fe, in general, to deactivate nickel is easier. Compared with conventional structure, the porous structure with the unique morphology significantly enhances the catalytic activity through a much larger surface area (SA) and greater reactivity of the active sites. Furthermore, the monolithic nanoarrayed perovskite presents very good results in well‐defined faceted catalysts and takes part in porous channel hydrocarbon combustion. This review study is prepared as a guide to cover the profound knowledge of perovskite oxides catalysts, considering the methane combustion reaction mechanisms, and addresses prospective studies in this field for researchers.

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“…Rare-earth-doped barium titanate (BaTiO3) ceramics with a perovskite structure are widely applied in multilayer ceramic capacitors (MLCC) [1]. When double rare earths are used as co-dopants in BaTiO3, most researches focused on the up-conversion luminescence, the energy transfer between two rare-earth ions, and core-shell-structured BaTiO3 ceramics prepared at lower sintering temperatures (Ts ≤ 1300 °C) [2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence of (BA0.96ND0.04) (TI0.96HO0.04) O3 Ceramic Under 638-Nm Excitation

Guan¹,

Lu²,

Sun³

2018

Topics in Chemical &Amp; Material Engineering

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(Ba0.96Nd0.04) (Ti0.96Ho0.04) O3 (BNTH4) ceramic with a cubic perovskite structure was prepared using the coldpressing ceramic technique of solid-state reaction. Under 638-nm excitation, the photoluminescence (PL) monitoring provided the evidence of a small number of Ho 3+ ions at Ba-sites. BNTH4 exhibits the multiplicity of PL signals of Nd 3+ and Ho 3+. Ho 3+ in BNTH4 exhibits an asymmetric amphoteric behavior, i.e., 3.82 at. % Ho 3+ ions dominantly occupy Tisites and 0.18 at.% Ho 3+ ions occupy Ba-sites.

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Synergistic effect of rare-earth elements on the dielectric properties and reliability of BaTiO 3 -based ceramics for multilayer ceramic capacitors

Cited by 53 publications

References 38 publications

High Rate Performance Nanocomposite Electrode of Mesoporous Manganese Dioxide/Silver Nanowires in KI Electrolytes

High Rate Performance Nanocomposite Electrode of Mesoporous Manganese Dioxide/Silver Nanowires in KI Electrolytes

Perovskite catalysts for methane combustion: applications, design, effects for reactivity and partial oxidation

Photoluminescence of (BA0.96ND0.04) (TI0.96HO0.04) O3 Ceramic Under 638-Nm Excitation

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