Showing papers in "Electrochimica Acta in 2014"

TL;DR: For incompletely reduced graphene oxides (RGOs), an effect of oxygen functional groups such as carboxyl, phenol, carbonyl, and quinone on electrochemical capacitive behavior was studied.

TL;DR: In this paper, experiments were conducted to enable the simultaneous measurement of electrochemical impedance and collection of hydrogen gas during the corrosion of pure magnesium in NaCl solutions, which provided three unique measures of magnesium corrosion for the same specimen.

TL;DR: In this paper, silver nanoparticles with the mean diameters of 10-30nm were self-assembled onto the surfaces of 2-aminoethanethiol (2-AET) functionalized graphene oxide (AETGO) sheets.

TL;DR: In this article, an Al2O3-coated separator with developed porous channels is prepared to improve the electrochemical performance of lithium sulfur batteries, and it is demonstrated that the porous layer is quite effective in reducing shuttle effect and enhancing the stability of the sulfur electrode.

TL;DR: A review of recent developments on hydrogen storage in MOFs is presented in this article, with a focus on the effects of various factors including open metal sites, "guest” metal ions, ligand functionalization, surface area, pore volume and pore size, and Pt or Pd metal nanoparticles.

TL;DR: In this paper, the Ni-substituted Na0.67Mn0.65Fe0.2Ni0.15O2 electrode exhibits higher reversible capacity of 208 mAh g−1 and improved cycling stability with 71% capacity retention over 50 cycles.

TL;DR: In this article, double layer capacitance measurements in acetonitrile with tetrabutylammonium hexafluorophosphate electrolyte were performed to investigate the catalytic properties of Co3O4 and CoOOH for the oxygen evolution reaction (OER).

TL;DR: In this article, a 3D-connected activated carbon foam (ACF) with micromesoporosity has been synthesized through carbonizing pomelo peel and activating by KOH.

TL;DR: In this paper, a method of avoiding ambiguities in linear Kramers-Kronig validity tests due to under- and over-fitting is presented, based on the observation that the parameters of the equivalent circuit model to be fitted start degenerating as soon as the model order chosen is too high and overfitting is taking place.

TL;DR: One-dimensional MnCo 2 O 4 nanowire arrays are synthesized on nickel foam by a facile hydrothermal method as mentioned in this paper, which are highly crystalline with an average diameter of 70nm and exhibit excellent properties for electrochemical energy storage.

TL;DR: In this paper, a simple electrochemical doping method was developed to significantly improve the electronic conductivity and the electrochemical performances of TiO 2 nanotube electrodes, which achieved a very high average specific capacitance of 20.08 mF cm −2 at a current density of 0.05

TL;DR: In this paper, gold nanoparticles with the mean diameters of 20-25nm were self-assembled onto the surfaces of p-aminothiophenol functionalized multi-walled carbon nanotubes (p-MWCNs) sheets.

TL;DR: In this paper, Li bis(fluorosulfonyl)imide (LiFSI) and high molecular weight poly(ethylene oxide) (PEO, Mv = 5.5 ǫ −1.1 s cm−1 at 80 c. The Li/LiFePO4 cell using LiFSI/PEO electrolyte exhibits good cycling performance at 80c.

TL;DR: In this paper, a new insight into the structure of the early products of aniline oxidation based on their Raman spectra is reported, and the influence of smooth gold support on the Raman spectrum of the films has also been studied.

TL;DR: In this paper, the molybdenum disulfide (MoS 2 ) nanosheet was prepared by a simple hydrothermal method, and its properties were characterized by X-ray powder diffraction, Xray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscope.

TL;DR: The rod-like manganese dioxide (MnO2)/acid-treated carbon nanotube (a-CNT) nanocomposites have been synthesized by a simple co-precipitation method as discussed by the authors.

TL;DR: In this article, a super-hydrophobic surface with self-cleaning was successfully deposited on AZ91D magnesium alloy by the nickel plating process, and the surface morphologies, chemical composition, wettability and corrosion resistance were characterized by means of SEM, FT-IR, water contact angle and electrochemical impedance spectroscopy (EIS) measurements.

TL;DR: In this article, a review of electrochemical methods for ascorbic acid assessment is presented, focusing on electrochemical sensors for assessing the concentration of vitamin C in various media.

TL;DR: In this article, a simple acid leaching technique is demonstrated to produce λ-MnO2 by treating LiMn2O4 with H2SO4, which shows high intercalation capacities as the positive electrode material for rechargeable aqueous batteries.

TL;DR: In this article, a Pt/reduced graphene oxide (Pt/RGO) modified glassy carbon electrode was prepared for the detection of dopamine (DA) and uric acid (UA) in the presence of high concentration of ascorbic acid.

TL;DR: In this paper, a comprehensive impedance spectroscopy study of the classic composite LSM:YSZ (lanthanum strontium manganite and yttria stabilized zirconia) solid oxide fuel cell (SOFC) cathode can be described well with porous electrode theory.

TL;DR: In this paper, a novel and sensitive electrochemical biosensor for selective determination of DNA was developed based on Fe@Au nanoparticles (Fe@ AuNPs) involving 2-aminoethanethiol (AET) functionalized graphene oxide (GO) and AETGO nanocomposite.

TL;DR: In this article, a new type of Ti/SnO 2 -Sb electrode modified with carbon nanotube (CNT) has been fabricated using a pulse electrodeposition method.

TL;DR: In this article, the authors investigated the optimal choice of the regularization parameter in the case of ridge regression and proposed two novel sets of test functions known as real and imaginary discrepancy test function, and real and real cross-validation test functions.

TL;DR: In this paper, the transition between lithium filaments, which are most likely whiskers, and lithium moss and report in detail on the growth of mossy lithium structures is described. And two different growth modes have to be distinguished: the unusual non-tip growth by lithium metal insertion into the metallic moss backbone, and the condition where the deposition at the top of the mossy structure is not possible anymore because it was electrically isolated from the current collector due to a previous lithium dissolution step.

TL;DR: The behavior of magnesium electrodes has been investigated in 3.5% NaCl during free corrosion and potentiodynamic polarizations as mentioned in this paper, and it was found that the anodic reaction of magnesium oxidation results in the generation of dark regions on the surface of the electrode and such regions are efficient in supporting the cathodic reaction (hydrogen evolution).

TL;DR: A simple method with low-cost chemical reagents ethanol and hydrazine hydrate was used to modify graphite felt as the cathode for electro-fenton (EF) application, using p-nitrophenol (p-Np) as the model pollutant.

TL;DR: In this paper, a reduced graphene oxide (RGO) on nickel hydroxide (Ni(OH)2) film was synthesized via a green and facile hydrothermal approach.

TL;DR: In this article, an asymmetric supercapacitor is fabricated by using the optimized GO/polypyrrole (GO/PPy) composite as positive electrode and activated carbon (AC) as negative electrode.

TL;DR: In this article, a comprehensive review on various electrosynthesis procedures developed to obtain the nanorods of desired structure, diameter, density on the substrate is provided, and the growth mechanisms and influence of different parameters such as the type and concentration of Zn2+ and OH− precursors on the morphology of obtained ZnO films are discussed.