Showing papers in "Electrochimica Acta in 2011"

TL;DR: A review of the history of the Point Defect Model (PDM) for the growth and breakdown of passive films that form on the surfaces of reactive metals in contact with corrosive, condensed phase environments is presented in this paper.

TL;DR: In this paper, LiFePO4 thin films were deposited on Ti substrates by pulsed laser deposition (PLD), and the apparent chemical diffusion coefficients of lithium in the films, D ˜ Li, were measured by cyclic voltammetry (CV), galvanostatic intermittent titration technique (GITT), and electrochemical impedance spectroscopy (EIS).

TL;DR: Polymer electrolytes are all those materials where a supramolecular system is doped with ions and presents a significant conductivity as mentioned in this paper, and polymer electrolytes have been widely used in various applications.

TL;DR: In this article, the authors synthesize a CuO/graphene composite from CuO and graphene oxide sheets following reduced by hydrazine vapor, and the synergetic effect is beneficial for the electrochemical performances of the composite.

TL;DR: A gas-liquid interfacial synthesis approach has been developed to prepare SnO2/graphene nanocomposite as discussed by the authors, which is a promising anode material for lithium-ion batteries.

TL;DR: In this article, a simple one-step route using gas template method is applied to synthesize macroporous LiNi 0.5 Mn 0.2, which is characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer-Emmett-Telle (BET) surface area, charge-discharge tests and electrochemical impedance spectroscopy (EIS) measurements.

TL;DR: In this paper, the effects of carbonization process and carbon nanofiber/nanotube additives on the cycling stability of silicon-carbon composite anodes were investigated by monitoring the impedance evolution during charge/discharge cycles with electrochemical impedance spectroscopy.

TL;DR: In this article, a modified glassy carbon electrode was used for the characterization of catalytic catalytic activities in a GCE and chitosan modified GCE, and the peak-to-peak potential separations between catechol (CT), resorcinol (RS) and hydroquinone (HQ) were obtained in their ternary mixture.

TL;DR: In this paper, the transference numbers of some lithium battery related electrolytes including tetrafluoroborate in propylene carbonate, lithium hexafluorophosphate in blends of ethylene carbonates/diethyl carbonates, and lithium difluoromono (oxalate) borate in an e cientyl carbonate blend via four different methods.

TL;DR: In this paper, a new electrocatalyst of Pd nanoparticles supported on polypyrrole-functionalized graphene (Pd/PPy-graphene) was reported.

TL;DR: In this paper, ordered mesoporous carbon/sulfur (OMC/S) nanocomposites with hierarchically structured sulfur loading, ranging from 50 to 75wt%, were synthesized via a simple melt-diffusion strategy.

TL;DR: In this article, the transference number of the lithium cation is expected to be unity while the ionic conductivity is kept high, and two different single-ion polymers with a similar final structure were synthesized by two ways, monomer free radical polymerization and polymer modification (PSTFSI) and PSTFSI (b) respectively.

TL;DR: In this paper, the authors proposed a method to solve the problem of artificial neural networks in the context of artificial intelligence. National Natural Science Foundation of China [20873115], National Basic Research Program of China (973 program) [2007CB209702]

TL;DR: In this article, the authors evaluate how variation in grain size and processing impact the corrosion resistance of high purity aluminium and find that a Hall-Petch type relationship may exist for corrosion rate and grain size.

TL;DR: In this article, a template-free method to synthesize NiO microstructures is reported and the electrochemical properties of the fabricated NiO nano-structures are evaluated.

TL;DR: In this paper, the removal of the anthraquinone dye Alizarin Red S (AR) was investigated by electro-Fenton process using a commercial graphite-felt to electrogenerate in situ hydrogen peroxide and regenerate ferrous ions as catalyst.

TL;DR: Porous ZnO nanosheets are grown directly on copper substrates by a chemical bath deposition technique followed by a heat treatment as discussed by the authors, and their electrochemical properties as anodes of lithium ion batteries are examined by cyclic voltammetry (CV) and galvanostatic discharge charge tests.

TL;DR: In this article, the synthesis, characterization and application of G-polyethylenedioxythiophene (PEDOT) nanocomposites as electrode material for supercapacitor applications was presented.

TL;DR: A quasi-solid-state supercapacitor was assembled by using alkaline polyvinyl alcohol and potassium iodide (PVA-KOH-KI) as gel electrolyte and activated carbons electrodes.

TL;DR: In this paper, all-solid-state Li/S batteries with Li2S-P2S5 glass-ceramic electrolytes were fabricated and their electrochemical performance was examined.

TL;DR: In this article, the electrocatalytic activity of amorphous and crystalline RuO2 thin films for oxygen evolution in an aqueous solution was investigated, and it was shown that the rate-determining step in the oxygen evolution reaction on the amorphus was the combination of the adjacent Ru−OH groups, whereas that on crystallineRuO2 was the dissociation of O−H bond in Ru-OH group.

TL;DR: A flexible graphene/multiwalled carbon nanotube (GN/MWCNT) film has been fabricated by flow-directed assembly from a complex dispersion of graphite oxide (GO) and pristine MWCNTs followed by the use of gas-based hydrazine to reduce the GO into GN sheets as discussed by the authors.

TL;DR: In this paper, the results of physical-chemical and electrochemical investigations performed on ternary mixtures of the room temperature ionic liquid (IL) N -butyl- N -methylpyrrolidinium bis(trifluoromethanesulfonyl)imide (PYR 14 TFSI), propylene carbonate (PC), and lithium bis(Trifluorsomethane sulfuronyl), and LiTFSI (LiTFSI) as electrolyte for lithium-ion batteries were investigated.

TL;DR: In this article, a DNA biosensor based on oxidized graphene and polyaniline nanowires (PANIws) modified glassy carbon electrode was developed, which exhibited good DPV current response for the complementary DNA sequences.

TL;DR: In this article, a hierarchical porous structure composed of Birnessite-type manganese dioxide (MnO 2 ) nanosheets on flexible carbon cloth (CC) via anodic electrodeposition technique is observed.

TL;DR: In this paper, NiCo2O4 coral-like porous crystals, nanoparticles and submicron-sized particles have been systematically prepared via a facile sol-gel method, using citric acid as the chelating ligand and H2O (H2O-DMF) as solvent.

TL;DR: In this paper, Nanoporous gold (NPG) fabricated by dealloying Au-Ag film was investigated for the nonenzymatic detection of H 2 O 2.

TL;DR: In this paper, the effect of the 3D electrode structure on the performance of the symmetric micro-supercapacitor was studied, showing that 3D micro-capacitors are promising for applications that require high power in a limited footprint area of the device.

TL;DR: In this article, large-scale Co3O4 nanoflower (NF) structures on Ni foam are prepared for the first time via a general two-step synthesis via a controllable solvothermal process and hereafter with a post-calcination process in air.

TL;DR: In this paper, a method for separately studying the onset of field induced growth instabilities and the instability that leads to pore formation was developed, which is consistent with the observed dependence of the Al 2 O 3 dissolution rate on the electric field, as well as the existence of a critical field for pore initiation.