Vasyl Stefanyk Precarpathian National University
<p class="ArticleAnnotation"><span lang="EN-GB">The current formation process in lithium power source (LPS) with </span><span lang="EN-US">SiO</span><sub>2</sub><span lang="EN-US"> </span>–22%<span lang=...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Vasyl Stefanyk Precarpathian National University
2016-10-01
|
| Series: | Фізика і хімія твердого тіла |
| Online Access: | http://journals.pu.if.ua/index.php/pcss/article/view/799 |
| _version_ | 1828165031888420864 |
|---|---|
| author | I. F. Myronyuk V. I. Mandzyuk V. M. Sachko |
| author_facet | I. F. Myronyuk V. I. Mandzyuk V. M. Sachko |
| author_sort | I. F. Myronyuk |
| collection | DOAJ |
| description | <p class="ArticleAnnotation"><span lang="EN-GB">The current formation process in lithium power source (LPS) with </span><span lang="EN-US">SiO</span><sub>2</sub><span lang="EN-US"> </span>–22%<span lang="EN-US"> C composition cathode </span><span lang="EN-GB">is explored in this work using galvanostatic cycling, cyclic voltammetry and impedance spectroscopy methods.It is set that specific capacity of LPS is 1757 mA∙h/g at its discharge in the mode <em>C</em>/20. Further cycling of LPS is accompanied by a sharp decline in specific capacity (irreversible capacity after the first cycle exceeds 95 %) due to formation of solid electrolyte interface of LiF composition and </span><span lang="EN-US">Li</span><em><sub>х</sub></em><span lang="EN-US">SiO</span><sub>2</sub><span lang="EN-US"> compound, in which lithium is not oxidized to the ion state during charging of source.</span><span lang="EN-GB"> It is found that the insertion of lithium ions into cathodematerial to the value <em>x</em></span><em><span lang="EN-US"> = </span></em><span lang="EN-GB">1,8 results in reduction of their diffusion coefficient on 4 orders (</span><em><span lang="EN-US">D</span></em><sub><span lang="EN-US">Li</span></sub><span lang="EN-US"> </span>=<span lang="EN-US"> </span>2,2∙10<sup><span lang="EN-US"> </span></sup><sup>-14</sup><span lang="EN-US"> </span>÷2,1∙10<sup><span lang="EN-US"> </span></sup><sup>-18</sup> с<span lang="EN-US">m</span><sup>2</sup>/<span lang="EN-US">s</span><span lang="EN-GB">).</span></p> <p class="ArticleAnnotation"><strong><span lang="EN-GB">Keywords:</span></strong><span lang="EN-GB">composite </span>SiO<sub>2</sub><span lang="EN-US"> </span>–<span lang="EN-US"> C,</span><span lang="EN-GB">lithium power sources, specific capacity, diffusion coefficient.</span></p> |
| first_indexed | 2024-04-12T01:36:50Z |
| format | Article |
| id | doaj.art-f882d551050f475ba42dfa2724e0e1fa |
| institution | Directory Open Access Journal |
| issn | 1729-4428 2309-8589 |
| language | English |
| last_indexed | 2024-04-12T01:36:50Z |
| publishDate | 2016-10-01 |
| publisher | Vasyl Stefanyk Precarpathian National University |
| record_format | Article |
| series | Фізика і хімія твердого тіла |
| spelling | doaj.art-f882d551050f475ba42dfa2724e0e1fa2022-12-22T03:53:18ZengVasyl Stefanyk Precarpathian National UniversityФізика і хімія твердого тіла1729-44282309-85892016-10-0116356957510.15330/pcss.16.3.569-575668Vasyl Stefanyk Precarpathian National UniversityI. F. Myronyuk0V. I. Mandzyuk1V. M. Sachko2ДВНЗ “Прикарпатський національний університет імені Василя Стефаника”ДВНЗ “Прикарпатський національний університет імені Василя Стефаника”ДВНЗ “Прикарпатський національний університет імені Василя Стефаника”<p class="ArticleAnnotation"><span lang="EN-GB">The current formation process in lithium power source (LPS) with </span><span lang="EN-US">SiO</span><sub>2</sub><span lang="EN-US"> </span>–22%<span lang="EN-US"> C composition cathode </span><span lang="EN-GB">is explored in this work using galvanostatic cycling, cyclic voltammetry and impedance spectroscopy methods.It is set that specific capacity of LPS is 1757 mA∙h/g at its discharge in the mode <em>C</em>/20. Further cycling of LPS is accompanied by a sharp decline in specific capacity (irreversible capacity after the first cycle exceeds 95 %) due to formation of solid electrolyte interface of LiF composition and </span><span lang="EN-US">Li</span><em><sub>х</sub></em><span lang="EN-US">SiO</span><sub>2</sub><span lang="EN-US"> compound, in which lithium is not oxidized to the ion state during charging of source.</span><span lang="EN-GB"> It is found that the insertion of lithium ions into cathodematerial to the value <em>x</em></span><em><span lang="EN-US"> = </span></em><span lang="EN-GB">1,8 results in reduction of their diffusion coefficient on 4 orders (</span><em><span lang="EN-US">D</span></em><sub><span lang="EN-US">Li</span></sub><span lang="EN-US"> </span>=<span lang="EN-US"> </span>2,2∙10<sup><span lang="EN-US"> </span></sup><sup>-14</sup><span lang="EN-US"> </span>÷2,1∙10<sup><span lang="EN-US"> </span></sup><sup>-18</sup> с<span lang="EN-US">m</span><sup>2</sup>/<span lang="EN-US">s</span><span lang="EN-GB">).</span></p> <p class="ArticleAnnotation"><strong><span lang="EN-GB">Keywords:</span></strong><span lang="EN-GB">composite </span>SiO<sub>2</sub><span lang="EN-US"> </span>–<span lang="EN-US"> C,</span><span lang="EN-GB">lithium power sources, specific capacity, diffusion coefficient.</span></p>http://journals.pu.if.ua/index.php/pcss/article/view/799 |
| spellingShingle | I. F. Myronyuk V. I. Mandzyuk V. M. Sachko Vasyl Stefanyk Precarpathian National University Фізика і хімія твердого тіла |
| title | Vasyl Stefanyk Precarpathian National University |
| title_full | Vasyl Stefanyk Precarpathian National University |
| title_fullStr | Vasyl Stefanyk Precarpathian National University |
| title_full_unstemmed | Vasyl Stefanyk Precarpathian National University |
| title_short | Vasyl Stefanyk Precarpathian National University |
| title_sort | vasyl stefanyk precarpathian national university |
| url | http://journals.pu.if.ua/index.php/pcss/article/view/799 |
| work_keys_str_mv | AT ifmyronyuk vasylstefanykprecarpathiannationaluniversity AT vimandzyuk vasylstefanykprecarpathiannationaluniversity AT vmsachko vasylstefanykprecarpathiannationaluniversity |