Showing papers in "Journal of Power Sources in 1994"

TL;DR: In this article, the authors used poly-3-(4-fluorophenyl)-thiophene (PEPT) in an electrolyte of 1 M tetramethylammonium trifluoromethanesulfonate (TMATFMS) in acetonitrile.

TL;DR: In this article, a mathematical simulation of a planar solid oxide fuel cell (SOFC) is presented, which accounts for three-dimensional and time-dependent effects, including the distribution of the gases, current density and the solid structure temperature across the cell.

TL;DR: In this paper, the authors describe the properties of the anode, cathode and electrolyte materials which presently seem to be the most promising for the development of these batteries, and evaluate the impact that the rockingchair concept may ultimately have on the progress of rechargeable lithium battery technology.

TL;DR: In this article, a nickel cermet consisting of 80 wt.% ZrO2 and 20 wt% Ni was applied to determine the kinetics of the methane/steam reforming process at anode materials of a solid oxide fuel cell.

TL;DR: In this paper, a liquid feed direct methanol fuel cell has been developed based on a proton exchange membrane electrolyte and Pt/Ru and Pt catalyzed fuel and air/O2 electrodes, respectively.

TL;DR: In this paper, an integrated electric vehicle service station system for managing the exchange of heavy and bulky battery assemblies in electric vehicles is presented. But the battery exchange system includes a battery platform for supporting an assembly of batteries for the vehicle, a vehicle platform support structure within an electric vehicle for receiving and supporting the battery platform, and a mechanized vehicle service stations facility for exchanging recharged battery platforms with spent platforms mounted on-board electric vehicles.

TL;DR: In this paper, the role of protonic/hydroxyl ion transport in oxide lattices has been investigated and it is postulated that protonics could be important in the development of alternative anode components.

TL;DR: In this article, a review summarizes the operating principles of the fuel cell stack and power systems, describes the current status of the technology, focusing on recent developments, and discusses the technical challenges and commercial prospectis for this fuel cell technology.

TL;DR: In this paper, a battery monitoring and charging system capable of determining when charging conditions are favorable, thereby adjusting the charging level to maximize fuel saving is presented, which increases the alternator field current to charge a battery during vehicle deceleration so that vehicle momentum, instead of engine power, is used to torque the shaft.

TL;DR: A temperature responsive tester for measuring the voltage of a voltage source includes a temperature responsive display and an electrical element thermally coupled with the display when a voltage exceeding a predetermined threshold level is impressed across the electrical element as mentioned in this paper.

TL;DR: In this paper, an ongoing collaboration among the authors in the three laboratories to (1) prepare alloys of the AB(sub 5) and AB (sub 2) types, using arc-melting/annealing and mechanical alloys techniques; (2) examine their physico-chemical characteristics (morphology, composition); (3) determine the hydrogen absorption/desorption behavior (pressure-composition isotherms as a function of temperature); and (4) evaluate their performance characteristics as hydride electrodes (charge/discharge, capacity retention, cycle

TL;DR: In this paper, a parametric model predicting the performance of a solid polymer electrolyte, proton exchange membrane fuel cell has been developed using a combination of mechanistic and empirical modelling techniques.

TL;DR: In this paper, an indirect ammonia fuel cell system is proposed which circumvents the problem of hydrogen storage, and system analysis shows that the specific energy density (kWh/kg or kWh/m3) of such a system is very attractive compared with that of a direct hydrogen fuel cell.

TL;DR: In this paper, it is shown that a dynamic hydrogen electrode roughly maintains the thermodynamic hydrogen potential when operated at low cathodic current density sufficient to uphold the saturation with hydrogen of the electrode.

TL;DR: In this paper, a review of the rechargeable alkaline manganese dioxide/zinc MnO 2 /Zn (Zn) system is presented and the operating principles and technological achievements are surveyed by referencing recent publications and patent literature.

TL;DR: In this paper, the double hydroxides (LDHs) of nickel with aluminium, chromium, manganese and iron, with the same structure as α-nickel hydroxide, have been electrosynthesized.

TL;DR: In this article, the results of experiments carried out on lead/acid batteries during charge and discharge processes at different currents and temperatures, selected to a cover a large range of operating conditions, including those encountered in photovoltaic (PV) system applications, are presented.

TL;DR: In this paper, the development issues that must be resolved before solid polymer fuel cell (SPFC) systems can enter commercial service are reviewed, particularly for the stack and fuel processing system.

TL;DR: In this paper, the possibility of using electrochemical systems for solving the problems of direct thermoelectric conversion is considered for a number of nonconventional electrochemical couples: "inert" electrode/macrocyclic complex with the central coordinated metal ion in different oxidation states (aqueous, aprotic organic electrolyte), ‘inert’ electrode/metal ion (molten salt).

TL;DR: In this paper, a study was made of the electrooxidation of methanol in sulfuric acid on carbon-supported electrodes containing platinum-tin bimetal catalysts that are prepared by an in situ potentiometric-characterization route.

TL;DR: In this article, the authors assess the options available for water management in a solid polymer fuel cell from an overall engineered system point of view, and show that improved water management at higher current densities not only increases peak power and efficiency but changes the profile of the power curve resulting in improved stability near the peak power operating point.

TL;DR: In this article, a vehicle propulsion system with methanol as secondary energy carrier and a polymer electrolyte membrane fuel cell (PEMFC) as the main component for energy conversion is developed.

TL;DR: In this article, the progress in developing electrocatalyst systems and electrode structures primarily for the positive electrode of single-unit solid polymer proton-exchange membrane (PEM) regenerative fuel cells was updated.

TL;DR: In this article, a series of seven discharges at decreasing rates with a brief relaxation period between each discharge but no charging step is used to test the capacity of an experimental cell during extended cycling of an insertion cell.

TL;DR: In this paper, a battery monitoring system for an electric vehicle is provided in which an individual battery monitor is physically touching and electrically connected to each one of the battery modules in the string of series or parallel connected battery modules.

TL;DR: In this article, three voltage ranges for the reversible lithium intercalation reaction, centered around 4, 2.9 and 1.1 V versus Li/Li +, have been investigated.

TL;DR: In this paper, a portable display device is used to monitor the residual capacity of a traveling battery from the outside of an electric vehicle and conduct operations such as locking and unlocking of a door from outside of the vehicle and controlling the operation of the air conditioner through wireless means.

TL;DR: In this paper, the Dow experimental PEM (XUS-13204.10) and unsupported high platinum loading electrodes yielded very high power densities, of the order of 2.5 W cm(exp -2).

TL;DR: In this paper, a structure interstratification, related to the spontaneous oxidation of the Mn 3+ to Mn 4+ ions, was found in the 5 M KOH electrolytic medium, leading to the existence of proton deficiencies within the slab.

TL;DR: In this paper, the performance characteristics of the nickel/iron battery under varying operational conditions are examined under a variety of operational conditions, and the major factor that limits the commercial impact of this battery is that it cannot be made sealed, that is, maintenance free.