Complex Impedance Measurements on the Steady State Behaviors of a 10-cell PEFC Stack
Journal Title: JOURNAL OF ADVANCES IN PHYSICS - Year 0, Vol 5, Issue 1
Abstract
Experimental studies on the behavior of a Polymer Electrolyte Fuel Cell (PEFC) stack were conducted by performing complex impedance measurements. Initially, the steady state characteristics of a 10-cell stack were measured, and the power function of the DC current was obtained to represent these characteristics. The frequency properties of the complex impedance apparatus were investigated in order to clarify the limitations of frequency measurement. The components of complex impedance, the real and imaginary parts, were rearranged into two vectors to analyze their frequency responses to power and output DC current.
Authors and Affiliations
Seiji Yoneda, Yoshihiro Ohno
Assessment of Some Trace Heavy Metals and Radioactivity Concentration in Drinking Water of Saudi Arabia
Concentration of trace elements and natural gross radioactivity were measured in the drinking water in Jizan region (Saudi Arabia). A preliminary study on trace elements (Zn, Fe, Mn, Ni, Cu, Cr, Co, Se, Sr, V, Ti, Mo, Hg...
Similarity in Analytic Behavior Intermediate Radial States of the Hydrogen Atom & Production of Radionuclides and Gamma Decay
The purpose of this paper is to show that analytic behavior of ground and intermediate states of the Hydrogen atom is similar to Gamma decay in molybdenum-99 (99mTc → 99Tc + γ).
The physical energy of the photons that used wildlife on the Earth can solve basic problems of energy and life outside the Earth
The concept of the new managed Eco-Physical hydrogen Energetics of Photons (EFhEF energetics) is introduced. It can solve the problems of ecology and of the replacement of fossil fuels on the Earth and is able to meet th...
Electro Paramagnetic Resonance and Magnetization Measurements of Metal-Substituted Hydroxyapatites Used in Hyperthermia Applications
Pure and metal doped hydroxyapatite samples nano-particles were prepared by the wet chemical method. Copper and cobalt is used in doping hydroxyapatite. Sample was prepared without change in the stoichiometric ratio of C...
Indentation Creep and Microstructure Properties of Sn-Ag Solder Alloys
The microstructure and micro-hardness of Sn-3.5wt.5%Ag, Sn-3.5wt.%Ag-0.27wt.%Ti and Sn-3.5wt.%Ag-0.27wt.%Cd treated at 75, 100, 125 and 150oC were studied. The microstructure characteristics of the tested alloys had been...