نتایج جستجو برای: electrochemical model
تعداد نتایج: 2152082 فیلتر نتایج به سال:
in this paper, the electrochemical behaviour of passive films formed on aisi 321 stainless steel (aisi 321)immersed in 0.1 m naoh + 0.1 m koh solution was evaluated by different electrochemical techniques. forthis purpose, passive films were formed at open circuit potential for 1 to 12 hours and then electrochemicalmeasurements were done. the polarization curves suggested that aisi 321 showed e...
a semi-empirical mathematical model for predicting physical part of ignition delay period in the combustion of direct - injection diesel engines with swirl is developed . this model based on a single droplet evaporation model . the governing equations , namely , equations of droplet motion , heat and mass transfer were solved simultaneously using a rung-kutta step by step unmerical method . the...
The electrification of the powertrain requires enhanced performance lithium-ion batteries, mainly in terms energy and power density. They can be improved by optimising positive electrode, i.e., changing their size, composition or morphology. Thick electrodes increase gravimetric density but generally have an inefficient performance. This work presents a 2D modelling approach for better understa...
Oxide formation plays an important role in the degradation of Pt electrocatalysts. However, exact oxide structure and reaction mechanism are not fully understood. Here, we used situ surface X-ray diffraction experiments to resolve at a Pt(111) model electrode potentials near onset oxygen evolution reaction. Fast possible by using photons with high kinetic energy combination large 2D detector. B...
This paper proposes a new fast chargingstrategy for lithium-ion (Li-ion) batteries. The approach relies on an experimentally validated high-fidelity model describing battery electrochemical and thermal dynamics that determine the charging capability. Such high-dimensional nonlinear dynamic can be intractable to compute in real-time if it is fused with extended Kalman filter or unscented commonl...
Galvanic corrosion is an ever-present problem in all different environments, particularly in tanks. The goal of this project is to develop a finite element model that can be used with experimental data to characterize the corrosion of a galvanic weldments couple in an electrolyte. In this study sample are welded by gas tungsten arc welding and friction stir welding. According to ASTM G8, Evalua...
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