Mathematical Model of the Local Kinetics of a Nickel Oxide Electrode
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KOSHELI, Nicolai; KOSTYRYA, M.. Mathematical Model of the Local Kinetics of a Nickel Oxide Electrode . In: Surface Engineering and Applied Electrochemistry. 2011, nr. 5(47), pp. 408-412. ISSN 1068-3755.
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Surface Engineering and Applied Electrochemistry
Numărul 5(47) / 2011 / ISSN 1068-3755 /ISSNe 1934-8002

Mathematical Model of the Local Kinetics of a Nickel Oxide Electrode

Pag. 408-412

Kosheli Nicolai, Kostyrya M.
Disponibil în IBN: 29 noiembrie 2013


A new mathematical model of the local kinetics characteristic E = f(i, τ) for nickel oxide electrodes NiOOH/Ni(OH)2 is presented. A flat crystal of active substance with thickness h that reconstructs a particle with a size of 2h is the sample for the studies. A mathematical model of the process is based on the conception considering the potential and polarization as a function of the concentration of the protons at the surface layer of the crystal. The polarization is considered as a sum of the concentration, activation, and ohmic components. The concept considers the coefficients of the protons activity and the proton vacancies in the crystal lattice. The potential of the electrode in the process of the discharge is determined by the changes in the surface concentration of protons. The coefficient of diffusion, the rate of the electromigration of protons, and the resistivity of the solid phase change over the thickness of the crystal in accordance with the changes in the concentration of the protons and the activity factors. The distribution of activity concentration of activity protons was determined by solving a one dimension problem of diffusive and electromigration transfer.

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<affiliation>Universitatea de Stat din Moldova, Moldova, Republica</affiliation>
<title xml:lang='en,ro'><p>Interese şi prezenţe occidentale &icirc;n Republica Moldova la sf&icirc;rşitul anilor &rsquo;90 &ndash; &icirc;nceputul 2000</p></title>
<publisher>Instrumentul Bibliometric National</publisher>
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<subject>geopolitical interests</subject>
<subject>European integration</subject>
<subject>financial trade</subject>
<date dateType='Issued'>2016</date>
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<description xml:lang='en' descriptionType='Abstract'><p><em>Since the early years of independence, Moldova has established relationships with several states. However, during the 90s, our country did not show a high interest for the major Western powers. The situation has evolved in the early 2000s, by increased cooperation with the European Union and the strengthening conviction that the Republic of Moldova is set towards an irreversible European path. </em>&nbsp;<em>For this reason, the study aims to follow a historical intervention development of bilateral political, economic and cultural cooperation between Moldova and both external actors as partners and major political forces worldwide and in the region. In this respect, we will examine relations with the following countries: Germany, France, Italy, Great Britain and the United States, the countries being placed in alphabetical order. </em>&nbsp;<em>Overall, we can identify the following steps in the foreign relations of the Republic of Moldova with the international community and the European Community: </em>&nbsp;<em>1. 1992-1998 - period for setting diplomatic ties and signing of collaboration agreements; </em>&nbsp;<em>2. 1998-2006 &ndash; period of relations strengthening and priorities identification, culminating in the signing of the Action Plan EU - Moldova </em>&nbsp;<em>3. 2006 - present. The study will examine only the first and second stage, the third is reflected in another context.</em></p></description>