Preparation and electrochemical characteristics of nanoscale Li<sub>2</sub>MnSiO<sub>4</sub> cathode material by high pressure hydrothermal method
Li<sub>2</sub>MnSiO<sub>4</sub> cathode material for lithium ion batteries was successfully synthesized using a high pressure hydrothermal method.The influences of pressure, reaction temperature and precursor concentration on the preparation of Li<sub>2</sub>MnSiO...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2019-09-01
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| Series: | Cailiao gongcheng |
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| Online Access: | http://jme.biam.ac.cn/CN/Y2019/V47/I9/108 |
| _version_ | 1797967142611582976 |
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| author | LI Jia-jun LIU Lei LU Yu-xiao SUN Zhi-jian MA Lei |
| author_facet | LI Jia-jun LIU Lei LU Yu-xiao SUN Zhi-jian MA Lei |
| author_sort | LI Jia-jun |
| collection | DOAJ |
| description | Li<sub>2</sub>MnSiO<sub>4</sub> cathode material for lithium ion batteries was successfully synthesized using a high pressure hydrothermal method.The influences of pressure, reaction temperature and precursor concentration on the preparation of Li<sub>2</sub>MnSiO<sub>4</sub> were carefully studied. The structure, morphology and electrochemical properties of the samples were characterized and analyzed using X-ray diffraction, scanning electron microscopy, transmission electron microscopy and electrochemical test. The results show that well crystallized Li<sub>2</sub>MnSiO<sub>4</sub> with high-purity material can be synthesized at high pressure. Moreover, higher precursor concentration is conducive to the formation of nanoscale particles of Li<sub>2</sub>MnSiO<sub>4</sub>. Electrochemical performance tests show that carbon-coated Li<sub>2</sub>MnSiO<sub>4</sub>/C composite has higher specific capacity than that of Li<sub>2</sub>MnSiO<sub>4</sub>.An initial specific discharge capacity of 178.6mAh·g<sup>-1</sup> can be achieved for the Li<sub>2</sub>MnSiO<sub>4</sub>/C cathode material at 0.1C (the current density is 33.3mA·g<sup>-1</sup>) and a capacity retention of 97.1mAh·g<sup>-1</sup> after 50 cycles is 54.4%. At the same time, Li<sub>2</sub>MnSiO<sub>4</sub>/C also shows smaller charge transfer resistance and higher lithium ion diffusion coefficient than that of Li<sub>2</sub>MnSiO<sub>4</sub>. |
| first_indexed | 2024-04-11T02:25:27Z |
| format | Article |
| id | doaj.art-04cc8084dd2a44af8e3e6846d82e5530 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:25:27Z |
| publishDate | 2019-09-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-04cc8084dd2a44af8e3e6846d82e55302023-01-02T22:37:15ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812019-09-0147910811510.11868/j.issn.1001-4381.2018.000682201909000682Preparation and electrochemical characteristics of nanoscale Li<sub>2</sub>MnSiO<sub>4</sub> cathode material by high pressure hydrothermal methodLI Jia-jun0LIU Lei1LU Yu-xiao2SUN Zhi-jian3MA Lei4College of Electronic Information Engineering, Hebei University, Baoding 071002, Hebei, ChinaCollege of Electronic Information Engineering, Hebei University, Baoding 071002, Hebei, ChinaCollege of Electronic Information Engineering, Hebei University, Baoding 071002, Hebei, ChinaCollege of Electronic Information Engineering, Hebei University, Baoding 071002, Hebei, ChinaCollege of Electronic Information Engineering, Hebei University, Baoding 071002, Hebei, ChinaLi<sub>2</sub>MnSiO<sub>4</sub> cathode material for lithium ion batteries was successfully synthesized using a high pressure hydrothermal method.The influences of pressure, reaction temperature and precursor concentration on the preparation of Li<sub>2</sub>MnSiO<sub>4</sub> were carefully studied. The structure, morphology and electrochemical properties of the samples were characterized and analyzed using X-ray diffraction, scanning electron microscopy, transmission electron microscopy and electrochemical test. The results show that well crystallized Li<sub>2</sub>MnSiO<sub>4</sub> with high-purity material can be synthesized at high pressure. Moreover, higher precursor concentration is conducive to the formation of nanoscale particles of Li<sub>2</sub>MnSiO<sub>4</sub>. Electrochemical performance tests show that carbon-coated Li<sub>2</sub>MnSiO<sub>4</sub>/C composite has higher specific capacity than that of Li<sub>2</sub>MnSiO<sub>4</sub>.An initial specific discharge capacity of 178.6mAh·g<sup>-1</sup> can be achieved for the Li<sub>2</sub>MnSiO<sub>4</sub>/C cathode material at 0.1C (the current density is 33.3mA·g<sup>-1</sup>) and a capacity retention of 97.1mAh·g<sup>-1</sup> after 50 cycles is 54.4%. At the same time, Li<sub>2</sub>MnSiO<sub>4</sub>/C also shows smaller charge transfer resistance and higher lithium ion diffusion coefficient than that of Li<sub>2</sub>MnSiO<sub>4</sub>.http://jme.biam.ac.cn/CN/Y2019/V47/I9/108lithium-ion batterycathode materialli<sub>2</sub>mnsio<sub>4</sub>high pressure hydrothermal methodcom-posite |
| spellingShingle | LI Jia-jun LIU Lei LU Yu-xiao SUN Zhi-jian MA Lei Preparation and electrochemical characteristics of nanoscale Li<sub>2</sub>MnSiO<sub>4</sub> cathode material by high pressure hydrothermal method Cailiao gongcheng lithium-ion battery cathode material li<sub>2</sub>mnsio<sub>4</sub> high pressure hydrothermal method com-posite |
| title | Preparation and electrochemical characteristics of nanoscale Li<sub>2</sub>MnSiO<sub>4</sub> cathode material by high pressure hydrothermal method |
| title_full | Preparation and electrochemical characteristics of nanoscale Li<sub>2</sub>MnSiO<sub>4</sub> cathode material by high pressure hydrothermal method |
| title_fullStr | Preparation and electrochemical characteristics of nanoscale Li<sub>2</sub>MnSiO<sub>4</sub> cathode material by high pressure hydrothermal method |
| title_full_unstemmed | Preparation and electrochemical characteristics of nanoscale Li<sub>2</sub>MnSiO<sub>4</sub> cathode material by high pressure hydrothermal method |
| title_short | Preparation and electrochemical characteristics of nanoscale Li<sub>2</sub>MnSiO<sub>4</sub> cathode material by high pressure hydrothermal method |
| title_sort | preparation and electrochemical characteristics of nanoscale li sub 2 sub mnsio sub 4 sub cathode material by high pressure hydrothermal method |
| topic | lithium-ion battery cathode material li<sub>2</sub>mnsio<sub>4</sub> high pressure hydrothermal method com-posite |
| url | http://jme.biam.ac.cn/CN/Y2019/V47/I9/108 |
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