Molten salt synthesis and supercapacitor properties of oxygen-vacancy LaMnO3−

Song, Yali; Zi-chang, Wang; Yan, Yongde; Zhang, Milin; Wang, Guiling; Yin, Ting; Xue, Yun; Gao, Fan; Qiu, Min

doi:10.1016/j.jechem.2019.09.007

Cited by 48 publications

(22 citation statements)

References 37 publications

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“…Furthermore, when the alkali-ion was inserted into the Mn vacancies, the ion would possess a strong interaction with the neighboring ''dangling" O atoms. This strong interaction of (K, Na, Li)-O constituted were lower than that of Mn-O, which could also explicate the appearance of vacancies [44].…”

Section: Structural Characterizationmentioning

confidence: 93%

Tuning electronic structure of δ-MnO2 by the alkali-ion (K, Na, Li) associated manganese vacancies for high-rate supercapacitors

Niu

Yan

et al. 2021

Journal of Energy Chemistry

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Section: Structural Characterizationmentioning

confidence: 93%

Tuning electronic structure of δ-MnO2 by the alkali-ion (K, Na, Li) associated manganese vacancies for high-rate supercapacitors

Niu

Yan

et al. 2021

Journal of Energy Chemistry

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“…The inorganic perovskite-type oxides show special physicochemical characteristics in ferroelectricity (Pontes et al 2017;Rana et al 2020;Cao et al 2017), piezoelectricity (Perumal et al 2019;Vu et al 2015;Xie et al 2019), dielectric (Arshad et al 2020;Zhou et al 2019;Boudad et al 2019), ferromagnetism (Yakout et al 2019;Ravi and (Wang et al 2015a;Liu et al 2007;Dwivedi et al 2015), and multiferroic (Li et al 2019b;Zhang et al 2016b;Pedro-García et al 2019). They are interesting nanomaterials for broad applications in catalysis (Grabowska 2016;Yang and Guo 2018;Hwang et al 2019;Xu et al 2019a;Ramos-Sanchez et al 2020), fuel cells (Kaur and Singh 2019;Sunarso et al 2017;Jiang 2019), ferroelectric random access memory (Gao et al 2020;Chen et al 2016a;Wang et al 2019a), electrochemical sensing and actuators (Govindasamy et al 2019a;Deganello et al 2016;Atta et al 2019;Zhang and Yi 2018;Rosa Silva et al 2019), and supercapacitors (Song et al 2020;Salguero Salas et al 2019;Lang et al 2019;George et al 2018). Furthermore, these materials possess a significant advantage that is the simple cry...…”

Section: Inorganic Perovskite-type Oxidesmentioning

confidence: 99%

Advanced materials and technologies for supercapacitors used in energy conversion and storage: a review

et al. 2020

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Supercapacitors are increasingly used for energy conversion and storage systems in sustainable nanotechnologies. Graphite is a conventional electrode utilized in Li-ion-based batteries, yet its specific capacitance of 372 mA h g −1 is not adequate for supercapacitor applications. Interest in supercapacitors is due to their high-energy capacity, storage for a shorter period and longer lifetime. This review compares the following materials used to fabricate supercapacitors: spinel ferrites, e.g., MFe 2 O 4 , MMoO 4 and MCo 2 O 4 where M denotes a transition metal ion; perovskite oxides; transition metals sulfides; carbon materials; and conducting polymers. The application window of perovskite can be controlled by cations in sublattice sites. Cations increase the specific capacitance because cations possess large orbital valence electrons which grow the oxygen vacancies. Electrodes made of transition metal sulfides, e.g., ZnCo 2 S 4 , display a high specific capacitance of 1269 F g −1 , which is four times higher than those of transition metals oxides, e.g., Zn-Co ferrite, of 296 F g −1. This is explained by the low charge-transfer resistance and the high ion diffusion rate of transition metals sulfides. Composites made of magnetic oxides or transition metal sulfides with conducting polymers or carbon materials have the highest capacitance activity and cyclic stability. This is attributed to oxygen and sulfur active sites which foster electrolyte penetration during cycling, and, in turn, create new active sites.

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“…In the literature, different metal combinations have been developed for the preparation of perovskite structures for specific applications [18][19][20][21][22][23][24][25][26][27]. Additionally, perovskites have been successfully employed in various technological applications, such as catalysts [18][19][20], photocatalysts [28,29], water splitting [30][31][32], supercapacitor [33][34][35], chemical reductions/removal [36][37][38], solar cells [39][40][41], gas sensing [42][43][44], and chemical sensing device development [45][46][47][48][49][50]. Karuppiah et al fabricated graphene nanosheet-wrapped mesoporous LaCeFeMnO 3 perovskite for lithium battery applications [51].…”

Section: Introductionmentioning

confidence: 99%

Perovskite Nanoparticles as an Electrochemical Sensing Platform for Detection of Warfarin

Ansari

Alam

2022

Biosensors

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Chemically prepared PrAlO3 perovskite nanoparticles (NPs) were applied for the electrochemical detection of warfarin, which is commonly utilized for preventing blood clots, such as in deep vein thrombosis. PrAlO3 perovskite NPs were synthesized by the co-precipitation process at environmental conditions. Crystallographic structure, phase purity, morphological structure, thermal stability, optical properties, and electrochemical characteristics were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, UV-visible analysis, and cyclic voltammetry techniques. TEM micrographs showed the highly crystalline structure, smooth surface, irregular shape, and size of nanocrystalline particles with an average size of 20–30 nm. Particularly crystalline perovskite NPs were pasted on glassy carbon electrodes (GCE) to electrochemically detect the warfarin contents in liquid samples. The fabricated electrode was electrochemically characterized by different parameters such as different potential, scan rates, same potential with seven consecutive cycles, time response, real-time sample analysis, and as a function of warfarin concentration in phosphate buffer solution (0.1 M PBS, pH 7.2). The electrochemical electrode was further verified with various potentials of 5, 10, 20, 50, 100, and 150 mV/s, which exhibited sequential enhancements in the potential range. For detecting warfarin over a wide concentration range (19.5 µM–5000 µM), the detection devices offered good sensitivity and a low limit of detection (19.5 µM). The time-dependent influence was examined using chronoamperometry (perovskite NPs/GCE) in the absence and presence of warfarin at four distinct voltages of +0.05 to +1.2 V from 0 to 1000 s. The repeatability and reliability of the constructed electrochemical sensing electrode were also evaluated in terms of cyclic response for 30 days, demonstrating that it is substantially more reliable for a longer period. The fabricated perovskite NPs/GCE electrodes could be employed for the rapid identification of other drugs.

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Molten salt synthesis and supercapacitor properties of oxygen-vacancy LaMnO3−

Cited by 48 publications

References 37 publications

Tuning electronic structure of δ-MnO2 by the alkali-ion (K, Na, Li) associated manganese vacancies for high-rate supercapacitors

Tuning electronic structure of δ-MnO2 by the alkali-ion (K, Na, Li) associated manganese vacancies for high-rate supercapacitors

Advanced materials and technologies for supercapacitors used in energy conversion and storage: a review

Perovskite Nanoparticles as an Electrochemical Sensing Platform for Detection of Warfarin

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