Yolk-shelled SnO2@NxC spheres with controllable void space as high-capacity and cycle-stable anode materials for Lithium-ion batteries
A facile and universal route has been developed to synthesize yolk-shelled metal oxides@N doped C spheres with controllable void size. Based on this approach, a yolk-shelled SnO2@N dopped C (yolk-shelled SnO2@NxC) composite has been successfully synthesized for lithium-ion battery electrodes. The re...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-07-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127522003677 |
| _version_ | 1811235578756202496 |
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| author | Bo Li Yunfei Song Yuxin Wang Zhen He Wei Gao |
| author_facet | Bo Li Yunfei Song Yuxin Wang Zhen He Wei Gao |
| author_sort | Bo Li |
| collection | DOAJ |
| description | A facile and universal route has been developed to synthesize yolk-shelled metal oxides@N doped C spheres with controllable void size. Based on this approach, a yolk-shelled SnO2@N dopped C (yolk-shelled SnO2@NxC) composite has been successfully synthesized for lithium-ion battery electrodes. The reported yolk-shelled SnO2@NxC, with SnO2 as inner shell and core, can remarkably increase the volumetric energy density of electrodes. The void between shell and core could accommodate the volume expansion during lithiation. More importantly, the NxC outer layer as a framework maintains the structure's integrity and shortens the transmission distance of charges. The results confirm the much-improved electrochemical performance. The yolk-shelled SnO2@NxC electrode delivers excellent cycling stability of 740 mAh g−1 at a current density of 0.25C after 750 cycles and a superior rate performance of 500 mAh g−1 at 5C (1C = 800 mA g−1). In addition, some other yolk-shelled metal oxides such as yolk-shelled TiO2 and yolk-shelled Fe2O3 have also been directly synthesized through the method in this paper for their proper applications. |
| first_indexed | 2024-04-12T11:54:25Z |
| format | Article |
| id | doaj.art-063d7a236fb746d28add333eb6ff9fdc |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-12T11:54:25Z |
| publishDate | 2022-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-063d7a236fb746d28add333eb6ff9fdc2022-12-22T03:34:02ZengElsevierMaterials & Design0264-12752022-07-01219110745Yolk-shelled SnO2@NxC spheres with controllable void space as high-capacity and cycle-stable anode materials for Lithium-ion batteriesBo Li0Yunfei Song1Yuxin Wang2Zhen He3Wei Gao4School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China; Department of Chemical and Materials Engineering, Faculty of Engineering, The University of Auckland, PB 92019 Auckland, New ZealandSchool of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaSchool of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, ChinaSchool of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang 212003, China; Corresponding authors.Department of Chemical and Materials Engineering, Faculty of Engineering, The University of Auckland, PB 92019 Auckland, New Zealand; Corresponding authors.A facile and universal route has been developed to synthesize yolk-shelled metal oxides@N doped C spheres with controllable void size. Based on this approach, a yolk-shelled SnO2@N dopped C (yolk-shelled SnO2@NxC) composite has been successfully synthesized for lithium-ion battery electrodes. The reported yolk-shelled SnO2@NxC, with SnO2 as inner shell and core, can remarkably increase the volumetric energy density of electrodes. The void between shell and core could accommodate the volume expansion during lithiation. More importantly, the NxC outer layer as a framework maintains the structure's integrity and shortens the transmission distance of charges. The results confirm the much-improved electrochemical performance. The yolk-shelled SnO2@NxC electrode delivers excellent cycling stability of 740 mAh g−1 at a current density of 0.25C after 750 cycles and a superior rate performance of 500 mAh g−1 at 5C (1C = 800 mA g−1). In addition, some other yolk-shelled metal oxides such as yolk-shelled TiO2 and yolk-shelled Fe2O3 have also been directly synthesized through the method in this paper for their proper applications.http://www.sciencedirect.com/science/article/pii/S0264127522003677Yolk-shelled structuresLithium-ion batteriesSnO2AnodesVolume expansion |
| spellingShingle | Bo Li Yunfei Song Yuxin Wang Zhen He Wei Gao Yolk-shelled SnO2@NxC spheres with controllable void space as high-capacity and cycle-stable anode materials for Lithium-ion batteries Materials & Design Yolk-shelled structures Lithium-ion batteries SnO2 Anodes Volume expansion |
| title | Yolk-shelled SnO2@NxC spheres with controllable void space as high-capacity and cycle-stable anode materials for Lithium-ion batteries |
| title_full | Yolk-shelled SnO2@NxC spheres with controllable void space as high-capacity and cycle-stable anode materials for Lithium-ion batteries |
| title_fullStr | Yolk-shelled SnO2@NxC spheres with controllable void space as high-capacity and cycle-stable anode materials for Lithium-ion batteries |
| title_full_unstemmed | Yolk-shelled SnO2@NxC spheres with controllable void space as high-capacity and cycle-stable anode materials for Lithium-ion batteries |
| title_short | Yolk-shelled SnO2@NxC spheres with controllable void space as high-capacity and cycle-stable anode materials for Lithium-ion batteries |
| title_sort | yolk shelled sno2 nxc spheres with controllable void space as high capacity and cycle stable anode materials for lithium ion batteries |
| topic | Yolk-shelled structures Lithium-ion batteries SnO2 Anodes Volume expansion |
| url | http://www.sciencedirect.com/science/article/pii/S0264127522003677 |
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