Ionics
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Defects and transport in SrFe1−xCoxO3−δ
Ionics - Tập 5 - Trang 434-443 - 1999
The non-stoichiometry and chemical diffusion coefficient of SrFe1−xCoxO3-δ have been measured by steady state and transient thermogravimetry in the temperature range 750–1200 °C at different oxygen partial pressures. At high oxygen partial pressures, the chemical diffusion coefficient was in the range 1·10−4 – 7·10−4 cm2/s. This, combined with high concentration of disordered vacancies make these ...... hiện toàn bộ
Thallium ionic conductivity of new thallium indium hafnium molybdate ceramics
Ionics - Tập 26 Số 12 - Trang 6157-6165 - 2020
In the process of studying the system Tl2MoO4–In2(MoO4)3–Hf(MoO4)2, a new thallium indium hafnium molybdate was found. The crystal structure of the molybdate Tl5InHf(MoO4)6 was determined in the centrosymmetric space group R $$ \overline{3} $$ c (a = 10.63893 (5) Å, c = 38.1447(3) Å; V = 3739.04 (4) Å3, Z = 6). The structure is a three-dimensional framework consisting of alternating (Hf,In)O6-octa...... hiện toàn bộ
Synthesis of sea urchin-like LiMn2O4 hollow macrospheres via in situ conversion for rechargeable lithium-ion batteries
Ionics - Tập 19 - Trang 259-264 - 2012
Among several materials (transition metal oxide) under development for use as a cathode in lithium-ion batteries, cubic spinel LiMn2O4 is one of the most promising cathode materials. In this study, the sea urchin-like LiMn2O4 hollow macrospheres were synthesized by using sea urchin-like α-MnO2 precursors through solid-state in situ self-sacrificing conversion route. The as-prepared LiMn2O4 was ass...... hiện toàn bộ
Purpald containing poly(2,5-dithienylpyrrole)-based multifunctional conducting polymer: synthesis, characterization, and electrochromic properties
Ionics - Tập 26 - Trang 3501-3511 - 2020
Synthesis of novel purpald (4-amino-5-hydrazino-1,2,4-triazole-3-thiol) containing 2,5-di(2-thienyl)pyrrole (TPTP) derivative monomer has been successfully achieved. Its functional conductive polymer (pTPTP) obtained electrochemically has been characterized and electrooptical properties have been investigated. In this way, multifunctional conductive polymer film has been formed by means of advance...... hiện toàn bộ
Charge rate influence on the electrochemical performance of LiFePO4 electrode with redox shuttle additive in electrolyte
Ionics - Tập 18 - Trang 501-505 - 2012
Overcharge performance of LiFePO4 cells is investigated through adding 2, 5-ditertbutyl 1, 4-dimethoxybenzene (DDB) as redox shuttle into electrolyte (RS electrolyte) at different charge rate. RS electrolytes with DDB works well as overcharge protection at low charge rate of less than 0.1 C. Novel charge/discharge characteristics are observed when charge rate increases in the cell with RS electrol...... hiện toàn bộ
Hybrid gray wolf optimization method in support vector regression framework for highly precise prediction of remaining useful life of lithium-ion batteries
Ionics - Tập 29 - Trang 3597-3607 - 2023
The prediction of remaining useful life (RUL) of lithium-ion batteries takes a critical effect in the battery management system, and precise prediction of RUL guarantees the secure and reliable functioning of batteries. For the difficult problem of selecting the parameter kernel of the training data set of the RUL prediction model constructed based on the support vector regression model, an intell...... hiện toàn bộ
Structural and optical properties of thermally evaporated antimony telluride thin films
Ionics - Tập 10 - Trang 291-294 - 2004
Antimony telluride thin films were prepared on the well-cleaned glass substrates under a pressure of 10 – 5 torr by thermal evaporation method. The thicknesses of the films were measured using Multiple Beam Interferometer (MBI) technique. The structure of the sample was analyzed by X-ray diffraction technique. The film attains crystalline structure as the temperature of the substrate is increased ...... hiện toàn bộ
Simple electrodeposition of a novel lanthanide-based porous tri-metallic metal–organic framework grown onto Ni-foam support as a novel binder-free electrode for supercapacitors
Ionics - Tập 28 - Trang 2389-2396 - 2022
A novel three mixed metal–organic framework (TM-MOF) containing lanthanum, gadolinium and thulium metals is prepared through a simple cathodic electrodeposition strategy onto nickel foam substrate. Various techniques are used to full characterization of the as-prepared TM-MOF product. The microscopic results revealed formation of the TM-MOF nanosheets uniformly grown onto porous Ni-foam. The syner...... hiện toàn bộ
Sulfonated graphene oxide with improved ionic performances
Ionics - Tập 21 - Trang 1919-1923 - 2015
Graphene oxide is well known as a new kind of functional materials because of its super-high specie surface area, mechanical strength, as well as excellent amphipathicity. In this article, graphene oxide was further sulfonated via substitution reaction with diazo salt of sulfanilic in order to endow graphene oxide with better ion exchange capacity and proton conductivity. The microstructure and mo...... hiện toàn bộ
Electrochemical characterization of NaClO4–mixed rice starch as a cost-effective and environment-friendly electrolyte
Ionics - Tập 25 - Trang 2693-2700 - 2018
Being eco-friendly, cost-effective, easy to synthesize and handle, starch-based electrolytes have tremendous advantages for electrochemical device fabrications. Starch electrolytes synthesized by crosslinking process result in stable, flexible, free-standing films which can be molded in different shapes and sizes. Rice starch–based material, prepared using glutaraldehyde as crosslinker and NaClO4 ...... hiện toàn bộ
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