Lithium-ion batteries have high-energy density, excellent cycle performance, low self-discharge rate and other characteristics, has been widely used in consumer electronics and electric vehicles and other fields [1,2,3,4].At present, the theoretical-specific capacity of graphite anode material is 372 mAh/g, which is difficult to …
WhatsApp: +86 18221755073The low temperature of 260°C during the reduction process not only reduced the production cost but also avoided the destruction of the natural sepiolite structure caused by the high temperature above 600°C in the traditional magnesium thermal reduction process, leading to a more complete nanofiber structure in the final product.
WhatsApp: +86 18221755073Low Temperature Aluminothermic Reduction of Natural Sepiolite to High-Performance Si Nanofibers for Li-Ion Batteries ... SNF yield a high reversible capacity of 2005.4 mAh g−1 at 0.5 A g−1 ...
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WhatsApp: +86 18221755073Carbon-nanoparticle-coated sepiolite hydrous-magnesium-silicate clay fibers are prepared by 220°C-autoclave hydrothermal carbonization of cellulose using 1.2-mol/L-hydrochloric-acid-pretreated sepiolite fibers. The deposited amorphous carbon nanoparticles (30–150 nm) nonuniformly and partially covering the sepiolite surface …
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WhatsApp: +86 18221755073In this context, we used three low-concentration polyoxometalates of tungstophosphoric acid, silicotungstic acid and phosphomolybdic acid to synthesize acid-activated sepiolite (SEP) using a simple hydrothermal method. Polyoxometalates with excellent dye adsorption ability and separation ability can acidify sepiolite. From the char -
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WhatsApp: +86 18221755073In this work, highly dispersed atomically-thin MoS 2 nanosheets were fabricated at one thouh of the commercial cost using sepiolite (SEP) mineral nanofibers as carriers via a microwave hydrothermal method. Atom-resolved microscopy revealed the MoS 2 nanosheets were only 1–4 atomic layers thick. The Mo atoms …
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WhatsApp: +86 18221755073By applying high-speed mechanical shearing (e.g., 12,000 rpm) to 3–6% w/w water dispersions of this rheological grade sepiolite, high viscosity gels (typically 20,000–24,000 cps at room temperature) are produced without perceptible syneresis phenomena (i.e., without exudation or expulsion of the liquid phase from the gel) at least …
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WhatsApp: +86 18221755073The as-received sepiolite evolved to Na-sepiolite (loughlinite) with a micropore system blocked by nanocrystalline Mg(OH)2, while ground samples yielded magnesium silicate hydrate phase (MSH ...
WhatsApp: +86 18221755073Sepiolite is derived from Greek words sepia and lithos, which denotes cuttlefish stone. As depicted by name ( of sea), the sepiolite can float on water owing to its low specific gravity and high surface area. Sepiolite is a naturally-occurring clay mineral which is widely found in soils and sediments.
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WhatsApp: +86 182217550731. Introduction. Sepiolite [1], [2], [3], a hydrated magnesium silicate clay mineral with layered chain structure and fibrous morphology, is an abundant and low cost material with worldwide annual production around 1,300,000 tons.The major ingredient of sepiolite is Mg 8 Si 12 O 30 (OH) 4 (H 2 O) 4 •8H 2 O, which consists of two tetrahedral …
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WhatsApp: +86 18221755073Activation of natural sepiolite by means of grinding in a planetary mill followed by wet NaOH activation was studied for the purpose of endowing the product with enhanced basicity for potential catalytic/sorptive applications. Synthesized solids were characterized with X-ray powder diffraction (XRD), N2 adsorption/desorption, scanning …
WhatsApp: +86 18221755073Pan et al. used a simple and scalable process which manufactured a high-capacity [36], high-rate-performance, and low-cost sepiolite-sulfur cathode material, making it promising for the ...
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WhatsApp: +86 18221755073When used as an anode for lithium-ion batteries, SNF yield a high reversible capacity of 2005.4 mAh g −1 at 0.5 A g −1 after 50 cycles and 1017.6 mAh g −1 at 2 A g −1 after 200 cycles, remarkably outperforming commercial Si material. With a low-cost precursor and facile approach, this work provides a new strategy for the synthesis …
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WhatsApp: +86 18221755073Olufemi B.B. et al/LAUTECH Journal of Engineering and Technology 10(2) 2016: 85-91 85 DEVELOPMENT OF A LOW COST RICE MILLING MACHINE 1Olufemi Bamidele Busari, 2Olayide Rasaq Adetunji*, 3Peter ...
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WhatsApp: +86 18221755073Grinding combined with alkali activation proved a simple and effective method for boosting CO2-sorption capacity of sepiolite to the level comparable to amine …
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WhatsApp: +86 18221755073DOI: 10.1039/C8TA00587G Corpus ID: 102626549; Self-templating synthesis of silicon nanorods from natural sepiolite for high-performance lithium-ion battery anodes @article{Chen2018SelftemplatingSO, title={Self-templating synthesis of silicon nanorods from natural sepiolite for high-performance lithium-ion battery anodes}, …
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