Preparation and lithium storage properties of free-standing and three-dimensional porous Cu@SnO<sub>2</sub> membrane electrode
In order to solve the problem of the low load of nano active materials in traditional electrodes, the free-standing and three-dimensional porous Cu@SnO<sub>2</sub>(3DCu@SnO<sub>2</sub>) membrane electrode with high loading capacity was obtained by nonsolvent induced phase sep...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Journal of Materials Engineering
2020-12-01
|
| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000986 |
| _version_ | 1797969556477575168 |
|---|---|
| author | YANG Huan QIAO Zhi-jun ZHANG Zhi-jia KANG Jian-li YU Zhen-yang |
| author_facet | YANG Huan QIAO Zhi-jun ZHANG Zhi-jia KANG Jian-li YU Zhen-yang |
| author_sort | YANG Huan |
| collection | DOAJ |
| description | In order to solve the problem of the low load of nano active materials in traditional electrodes, the free-standing and three-dimensional porous Cu@SnO<sub>2</sub>(3DCu@SnO<sub>2</sub>) membrane electrode with high loading capacity was obtained by nonsolvent induced phase separation method and reduction/sintering process to inherit the three-dimensional porous structure of polymer membrane. The morphology, structure and electrochemical properties of free-standing membrane electrodes were characterized by scanning electron microscopy(SEM), X-ray diffraction(XRD) analysis and electrochemical workstations. The effects of material ratio and sintering temperature on the structure and properties of self-supporting membrane electrodes were clarified. The results show that the membrane electrode with 60%(mass fraction,the same below) copper powder sintered at 600 ℃ has three-dimensional bicontinuous porous structure with SnO<sub>2</sub> loading up to 30%. At the current density of 100 mA·g<sup>-1</sup>, the reversible specific capacity can reach 715 mAh·g<sup>-1</sup>, and remains 433.9 mAh·g<sup>-1</sup> after 50 cycles. The specific capacity retention rate can reach 72% when the current density increases to 600 mA·g<sup>-1</sup>. The resistance of the 3DCu@SnO<sub>2</sub> membrane electrode is 70% lower than that of traditional coating electrode. |
| first_indexed | 2024-04-11T03:04:05Z |
| format | Article |
| id | doaj.art-961692c5281e4ceba1550c54c329be6d |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T03:04:05Z |
| publishDate | 2020-12-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-961692c5281e4ceba1550c54c329be6d2023-01-02T13:32:21ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812020-12-014812535910.11868/j.issn.1001-4381.2019.00098620201206Preparation and lithium storage properties of free-standing and three-dimensional porous Cu@SnO<sub>2</sub> membrane electrodeYANG Huan0QIAO Zhi-jun1ZHANG Zhi-jia2KANG Jian-li3YU Zhen-yang4School of Mechanical Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Mechanical Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Material Science and Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Material Science and Engineering, Tiangong University, Tianjin 300387, ChinaSchool of Mechanical Engineering, Tiangong University, Tianjin 300387, ChinaIn order to solve the problem of the low load of nano active materials in traditional electrodes, the free-standing and three-dimensional porous Cu@SnO<sub>2</sub>(3DCu@SnO<sub>2</sub>) membrane electrode with high loading capacity was obtained by nonsolvent induced phase separation method and reduction/sintering process to inherit the three-dimensional porous structure of polymer membrane. The morphology, structure and electrochemical properties of free-standing membrane electrodes were characterized by scanning electron microscopy(SEM), X-ray diffraction(XRD) analysis and electrochemical workstations. The effects of material ratio and sintering temperature on the structure and properties of self-supporting membrane electrodes were clarified. The results show that the membrane electrode with 60%(mass fraction,the same below) copper powder sintered at 600 ℃ has three-dimensional bicontinuous porous structure with SnO<sub>2</sub> loading up to 30%. At the current density of 100 mA·g<sup>-1</sup>, the reversible specific capacity can reach 715 mAh·g<sup>-1</sup>, and remains 433.9 mAh·g<sup>-1</sup> after 50 cycles. The specific capacity retention rate can reach 72% when the current density increases to 600 mA·g<sup>-1</sup>. The resistance of the 3DCu@SnO<sub>2</sub> membrane electrode is 70% lower than that of traditional coating electrode.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000986nonsolvent induced phase separationthree-dimensional bicontinuous and porous structuresno<sub>2</sub>membrane electrode |
| spellingShingle | YANG Huan QIAO Zhi-jun ZHANG Zhi-jia KANG Jian-li YU Zhen-yang Preparation and lithium storage properties of free-standing and three-dimensional porous Cu@SnO<sub>2</sub> membrane electrode Cailiao gongcheng nonsolvent induced phase separation three-dimensional bicontinuous and porous structure sno<sub>2</sub> membrane electrode |
| title | Preparation and lithium storage properties of free-standing and three-dimensional porous Cu@SnO<sub>2</sub> membrane electrode |
| title_full | Preparation and lithium storage properties of free-standing and three-dimensional porous Cu@SnO<sub>2</sub> membrane electrode |
| title_fullStr | Preparation and lithium storage properties of free-standing and three-dimensional porous Cu@SnO<sub>2</sub> membrane electrode |
| title_full_unstemmed | Preparation and lithium storage properties of free-standing and three-dimensional porous Cu@SnO<sub>2</sub> membrane electrode |
| title_short | Preparation and lithium storage properties of free-standing and three-dimensional porous Cu@SnO<sub>2</sub> membrane electrode |
| title_sort | preparation and lithium storage properties of free standing and three dimensional porous cu sno sub 2 sub membrane electrode |
| topic | nonsolvent induced phase separation three-dimensional bicontinuous and porous structure sno<sub>2</sub> membrane electrode |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2019.000986 |
| work_keys_str_mv | AT yanghuan preparationandlithiumstoragepropertiesoffreestandingandthreedimensionalporouscusnosub2submembraneelectrode AT qiaozhijun preparationandlithiumstoragepropertiesoffreestandingandthreedimensionalporouscusnosub2submembraneelectrode AT zhangzhijia preparationandlithiumstoragepropertiesoffreestandingandthreedimensionalporouscusnosub2submembraneelectrode AT kangjianli preparationandlithiumstoragepropertiesoffreestandingandthreedimensionalporouscusnosub2submembraneelectrode AT yuzhenyang preparationandlithiumstoragepropertiesoffreestandingandthreedimensionalporouscusnosub2submembraneelectrode |