CoFe2O4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for Li-ion Batteries
Abstract CoFe2O4-graphene nanosheets (CoFe2O4-GNSs) were synthesized through an ultrasonic method, and their electrochemical performances as Li-ion battery electrode were improved by annealing processes. The nanocomposites obtained at 350 °C maintained a high specific capacity of 1,257 mAh g−1 even...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2014-09-01
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| Series: | Nano-Micro Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s40820-014-0003-7 |
| _version_ | 1797362970974486528 |
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| author | Yinglin Xiao Xiaomin Li Jiantao Zai Kaixue Wang Yong Gong Bo Li Qianyan Han Xuefeng Qian |
| author_facet | Yinglin Xiao Xiaomin Li Jiantao Zai Kaixue Wang Yong Gong Bo Li Qianyan Han Xuefeng Qian |
| author_sort | Yinglin Xiao |
| collection | DOAJ |
| description | Abstract CoFe2O4-graphene nanosheets (CoFe2O4-GNSs) were synthesized through an ultrasonic method, and their electrochemical performances as Li-ion battery electrode were improved by annealing processes. The nanocomposites obtained at 350 °C maintained a high specific capacity of 1,257 mAh g−1 even after 200 cycles at 0.1 A g−1. Furthermore, the obtained materials also have better rate capability, and it can be maintained to 696, 495, 308, and 254 mAh g−1 at 1, 2, 5, and 10 A g−1, respectively. The enhancements realized in the reversible capacity and cyclic stability can be attributed to the good improvement in the electrical conductivity achieved by annealing at appropriate temperature, and the electrochemical nature of CoFe2O4 and GNSs during discharge–charge processes. Graphical Abstract CoFe2O4-graphene nanocomposites (CoFe2O4-GNSs) have been synthesized through an ultrasonic method combined with calcination process. The nanocomposite calcinated at 350 °C shows better rate capabilities, e.g., 696, 495, 308, and 254 mAh g−1 at 1, 2, 5, and 10 A g−1, respectively. |
| first_indexed | 2024-03-08T16:14:34Z |
| format | Article |
| id | doaj.art-a41d6f25b9bc40db8ff2c5cf73adbe48 |
| institution | Directory Open Access Journal |
| issn | 2311-6706 2150-5551 |
| language | English |
| last_indexed | 2024-03-08T16:14:34Z |
| publishDate | 2014-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nano-Micro Letters |
| spelling | doaj.art-a41d6f25b9bc40db8ff2c5cf73adbe482024-01-07T12:40:49ZengSpringerOpenNano-Micro Letters2311-67062150-55512014-09-016430731510.1007/s40820-014-0003-7CoFe2O4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for Li-ion BatteriesYinglin Xiao0Xiaomin Li1Jiantao Zai2Kaixue Wang3Yong Gong4Bo Li5Qianyan Han6Xuefeng Qian7School of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong UniversitySchool of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong UniversitySchool of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong UniversitySchool of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong UniversitySchool of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong UniversitySchool of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong UniversitySchool of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong UniversitySchool of Chemistry and Chemical Engineering and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong UniversityAbstract CoFe2O4-graphene nanosheets (CoFe2O4-GNSs) were synthesized through an ultrasonic method, and their electrochemical performances as Li-ion battery electrode were improved by annealing processes. The nanocomposites obtained at 350 °C maintained a high specific capacity of 1,257 mAh g−1 even after 200 cycles at 0.1 A g−1. Furthermore, the obtained materials also have better rate capability, and it can be maintained to 696, 495, 308, and 254 mAh g−1 at 1, 2, 5, and 10 A g−1, respectively. The enhancements realized in the reversible capacity and cyclic stability can be attributed to the good improvement in the electrical conductivity achieved by annealing at appropriate temperature, and the electrochemical nature of CoFe2O4 and GNSs during discharge–charge processes. Graphical Abstract CoFe2O4-graphene nanocomposites (CoFe2O4-GNSs) have been synthesized through an ultrasonic method combined with calcination process. The nanocomposite calcinated at 350 °C shows better rate capabilities, e.g., 696, 495, 308, and 254 mAh g−1 at 1, 2, 5, and 10 A g−1, respectively.https://doi.org/10.1007/s40820-014-0003-7Cobalt ferriteGrapheneAnode materialsLithium ion battery |
| spellingShingle | Yinglin Xiao Xiaomin Li Jiantao Zai Kaixue Wang Yong Gong Bo Li Qianyan Han Xuefeng Qian CoFe2O4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for Li-ion Batteries Nano-Micro Letters Cobalt ferrite Graphene Anode materials Lithium ion battery |
| title | CoFe2O4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for Li-ion Batteries |
| title_full | CoFe2O4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for Li-ion Batteries |
| title_fullStr | CoFe2O4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for Li-ion Batteries |
| title_full_unstemmed | CoFe2O4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for Li-ion Batteries |
| title_short | CoFe2O4-Graphene Nanocomposites Synthesized through An Ultrasonic Method with Enhanced Performances as Anode Materials for Li-ion Batteries |
| title_sort | cofe2o4 graphene nanocomposites synthesized through an ultrasonic method with enhanced performances as anode materials for li ion batteries |
| topic | Cobalt ferrite Graphene Anode materials Lithium ion battery |
| url | https://doi.org/10.1007/s40820-014-0003-7 |
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