Showing papers in "Materials Chemistry and Physics in 1989"

TL;DR: An overview of electrocatalytical properties of N 4 -chelates with respect to cathodic oxygen reduction is given in this article, where the influence of thermal treatment of modified carbon materials is discussed.

TL;DR: In this paper, a series of new oxometalate-based materials are described, which are robust and very durable, and have been characterized by electrochemistry and several complementary physical techniques.

TL;DR: In this paper, the surface properties of single crystal electrode surfaces of various orientations were investigated for oxide formation and oxygen reduction on gold and showed that each crystallographic orientation gives an electrode surface with distinct electrochemical properties.

TL;DR: The synthesis methods and chemical properties of SiS2-based, Li+-conducting glasses are reviewed in this paper, and the structural information obtained from DSC, FT-IR, and solid state NMR is discussed.

TL;DR: In this article, the surface and electrocatalytic properties of RuO2 + IrO2 electrodes were investigated by voltammetric curves, ex situ XPS analysis, and O2 evolution.

TL;DR: In this article, a review of advances in research on lithium ion conductive sulfide-based glasses: Li2S-F (F = SiS 2, GeS2, P2S 5, B2S 3, As2S3).

TL;DR: In this paper, the main conclusion is that electronic charge carriers channelled into bimetallic interfacial clusters or cluster-metal associations provide optimal conditions for multi-electron transfer catalysis approaching the performance of platinum in acid electrolyte.

TL;DR: In this paper, the authors examined the kinetics of photo-reduction of CO 2 in nonaqueous solutions containing tetraalkyl ammonium cations with special reference to the effects of surface decoration of p-CdTe with metals, organic complexes and crown ethers.

TL;DR: In this article, it was shown that most NMR measurements are made in the MHz frequency range and for nearly all glasses this frequency range falls in a region where the ionic conductivity shows a frequency dependence and hence a temperature dependence less than that exhibited by the d.c. or frequency independent conductivity.

TL;DR: In this article, Raney nickel type electrocatalysts for cathodic H 2 evolution were investigated and it was shown that secondary structure (fine pores and tertiary structure (coarse pores and cracks) depend on the chosen preparation procedure and that they influence the effective catalytic activity sizeably.

TL;DR: In this paper, the characteristics of Eu 2+ -doped Ba 5 SiO 4 Br 6 as a photostimulable phosphor are described and the stimulation spectrum, conversion efficiency, stimulation energy and response time of this material are discussed.

TL;DR: The electrocatalytic properties of iron tetrapyridino porphyrazine FeTPyPz for the reduction on O2 in alkaline media have been examined with cyclic voltammetry and rotating ring disk techniques.

TL;DR: In this article, the authors considered the problem of electrocatalysis for hydrogen evolution in the chlorate cell process and its solution based on the Brewer intermetallic phases, and typical relevant issues of achieved electrocatalytic activity as a function of inter-metallic composition are presented.

TL;DR: In this article, a perovskitic structure with ordering of Y and Cu in B sites was studied under controlled conditions in order to avoid the pollution of the samples by CO3− ions and consequent formation of oxycarbonates.

TL;DR: In this article, the effects of surface dehydration on crystal unity, textural properties (surface area and pore volume) and surface acid-base properties of differently prepared AlPO 4 -Al 2 O 3 (75:25 wt%) systems have been studied.

TL;DR: In this paper, a review of studies on glass transition phenomena of Ag+ conducting glasses is presented with special attention to their ac conduction properties, and experimental results obtained so far can be discussed successfully on the basis of the coupled-generalized Langevin equation and the excess-free-volume theory.

TL;DR: In this paper, a review of fluoroberyllates, fluorozirconates, fluoroaluminates and various heavy metal fluoride glasses is presented, where factors enhancing or limiting anionic conduction are discussed.

TL;DR: In this paper, surface analysis of carbon blacks and their electrochemical corrosion behavior in H 3 PO 4 was performed and the graphitic character and the population of oxygen-containing surface functional groups of different carbons were found to be related to their corrosion rates.

TL;DR: In this article, the problem of composition and structure of substances forming due to pyrolysis of N 4 -complexes, unsupported or deposited onto a carbon support has been observed.

TL;DR: In this paper, the hopping mechanism of the electronic conductivity and the comparative redox properties as a function of the nature of the transition metal are reviewed and compared to crystalline electrode materials.

TL;DR: In this article, a new cluster bypass (CB) model is proposed as a basis for developing theories of ionic conduction in glass which recognize the essential continuity of glass/ melt behaviour.

TL;DR: In this article, the operating conditions for Zn and Co codeposition in chloride baths were studied in order to obtain alloys up to 08% Co with good physical and chemical characteristics.

TL;DR: In this paper, the effect of structural changes on the oxidation kinetic of ironmanganese, copper-manganite and nicke1-nomenclature spinels has been studied by measuring the time and temperature dependence of the mass change of samples containing several oxidizable cations.

TL;DR: In this article, a new activated cathode for chlor-alkali electrolysis is described, which is a composite coating consisting in a first RuO2 thermal layer, on a nickel support, modified by a second layer made of electroless nickel.

TL;DR: In this article, the spectral and thermal properties of nickel hydroxide electrode materials were examined as a function of charging, of time and of the kind of alkali hydroxides present during electrodeposition.

TL;DR: In this article, experimental data concerning pyrolysis of ruthenium-titanium chloride or hydroxide precipitates and interaction of RUThenium and titanium components in solutions used for preparation of anode coatings are presented.

TL;DR: In this article, the conductivity of thin-film Al-GeSe samples has been investigated at high values of the applied electric field up to 1 × 10 8 V/m in the temperature range 295 to 93K.

TL;DR: In this article, a number of nickel (II) hydroxides were prepared and examined by i.r. spectrometry and thermal methods, and it was ascertained that physicochemical properties change according to the preparation conditions.