Academic Journal
Definition of the influence of obtaining method on physical and chemical characteristics of Ni (OH)2 powders
| Τίτλος: | Definition of the influence of obtaining method on physical and chemical characteristics of Ni (OH)2 powders |
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| Συγγραφείς: | Valerii Kotok, Vadym Kovalenko |
| Πηγή: | Eastern-European Journal of Enterprise Technologies; Том 1, № 12 (97) (2019): Materials Science; 21-27 Восточно-Европейский журнал передовых технологий; Том 1, № 12 (97) (2019): Материаловедение; 21-27 Східно-Європейський журнал передових технологій; Том 1, № 12 (97) (2019): Матеріалознавство; 21-27 |
| Στοιχεία εκδότη: | Private Company Technology Center, 2019. |
| Έτος έκδοσης: | 2019 |
| Θεματικοί όροι: | 0211 other engineering and technologies, 0202 electrical engineering, electronic engineering, information engineering, Ni(OH)2, гидроксид никеля, способ получения, циклическая вольтамперометрия, удельная поверхность, коэффициент диффузии протона, nickel hydroxide, synthesis method, cyclic voltamperometry, specific surface area, proton diffusion coefficient, 02 engineering and technology, UDC 544.653.1, гідроксид нікелю, спосіб отримання, циклічна вольтамперометрія, питома поверхня, коефіцієнт дифузії протона |
| Περιγραφή: | Four types of hydroxide were chosen for the study. Two of them were synthesized using the industrial method and are used in alkaline batteries. The other two nickel hydroxide powders were synthesized according to the method described in modern literature. The first hydroxide was synthesized using the hydrolytic method from a solution of nickel salt and urea. The other was synthesized from a solution containing a mixture of nickel and aluminum salts in a 4:1 ratio and was precipitated with a solution of alkali. As a result, all chosen hydroxide powders differ in physico-chemical parameters: structure, phase composition, morphology. Thus, it was revealed that the synthesis method of nickel hydroxide, and in turn, differences in structure and morphology, have a significant impact on electrochemical and other physico-chemical properties of powders. As a result of measuring specific surface area using the dye absorption method, the measured values of the studied hydroxide were found to be 2.52 m 2 /g to 15.44 m 2 /g. The measured values were used to calculate diffusion coefficients. The diffusion coefficients were calculated for both anodic and cathodic processes, along with their averaged values. The obtained values of proton diffusion coefficients varied from 9.86∙10 -15 to 9.87∙10 -17 cm 2 /s. Comparison and analysis of electrochemical characteristics, specific surface area values and diffusion coefficients allowed making recommendations for hydroxide application. A mechanism was proposed , that explains the values of specific parameters, and the relation between the structure, synthesis method and physico-chemical parameters was revealed |
| Τύπος εγγράφου: | Article |
| Περιγραφή αρχείου: | application/pdf |
| ISSN: | 1729-4061 1729-3774 |
| DOI: | 10.15587/1729-4061.2019.156093 |
| Σύνδεσμος πρόσβασης: | http://journals.uran.ua/eejet/article/download/156093/157406 http://journals.uran.ua/eejet/article/download/156093/157406 http://journals.uran.ua/eejet/article/view/156093 https://www.neliti.com/publications/308005/definition-of-the-influence-of-obtaining-method-on-physical-and-chemical-charact http://journals.uran.ua/eejet/article/view/156093 |
| Rights: | CC BY |
| Αριθμός Καταχώρησης: | edsair.doi.dedup.....61439f9c97baeff6ea489eaabd6f06a3 |
| Βάση Δεδομένων: | OpenAIRE |
| ISSN: | 17294061 17293774 |
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| DOI: | 10.15587/1729-4061.2019.156093 |