Effect of Graphene on the Performance of Silicon–Carbon Composite Anode Materials for Lithium-Ion Batteries
(Si/graphite)@C and (Si/graphite/graphene)@C were synthesized by coating asphalt-cracked carbon on the surface of a Si-based precursor by spray drying, followed by heat treatment at 1000 °C under vacuum for 2h. The impact of graphene on the performance of silicon–carbon composite-based anode materia...
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2024-02-01
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| author | Chengyuan Ni Chengdong Xia Wenping Liu Wei Xu Zhiqiang Shan Xiaoxu Lei Haiqing Qin Zhendong Tao |
| author_facet | Chengyuan Ni Chengdong Xia Wenping Liu Wei Xu Zhiqiang Shan Xiaoxu Lei Haiqing Qin Zhendong Tao |
| author_sort | Chengyuan Ni |
| collection | DOAJ |
| description | (Si/graphite)@C and (Si/graphite/graphene)@C were synthesized by coating asphalt-cracked carbon on the surface of a Si-based precursor by spray drying, followed by heat treatment at 1000 °C under vacuum for 2h. The impact of graphene on the performance of silicon–carbon composite-based anode materials for lithium-ion batteries (LIBs) was investigated. Transmission electron microscopy (TEM) and selected area electron diffraction (SAED) images of (Si/graphite/graphene)@C showed that the nano-Si and graphene particles were dispersed on the surface of graphite, and thermogravimetric analysis (TGA) curves indicated that the content of silicon in the (Si/graphite/graphene)@C was 18.91%. More bituminous cracking carbon formed on the surface of the (Si/graphite/graphene)@C due to the large specific surface area of graphene. (Si/Graphite/Graphene)@C delivered first discharge and charge capacities of 860.4 and 782.1 mAh/g, respectively, initial coulombic efficiency (ICE) of 90.9%, and capacity retention of 74.5% after 200 cycles. The addition of graphene effectively improved the cycling performance of the Si-based anode materials, which can be attributed to the reduction of electrochemical polarization due to the good structural stability and high conductivity of graphene. |
| first_indexed | 2024-03-08T03:53:16Z |
| format | Article |
| id | doaj.art-fe6d7f05da59429b9cc53940494d59c8 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-08T03:53:16Z |
| publishDate | 2024-02-01 |
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| series | Materials |
| spelling | doaj.art-fe6d7f05da59429b9cc53940494d59c82024-02-09T15:18:00ZengMDPI AGMaterials1996-19442024-02-0117375410.3390/ma17030754Effect of Graphene on the Performance of Silicon–Carbon Composite Anode Materials for Lithium-Ion BatteriesChengyuan Ni0Chengdong Xia1Wenping Liu2Wei Xu3Zhiqiang Shan4Xiaoxu Lei5Haiqing Qin6Zhendong Tao7Key Laboratory of Air-Driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou 324000, ChinaKey Laboratory of Air-Driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou 324000, ChinaGuangxi Key Laboratory of Superhard Material, National Engineering Research Center for Special Mineral Material, Guangxi Technology Innovation Center for Special Mineral Material, China Nonferrous Metal (Guilin) Geology and Mining Co., Ltd., Guilin 541004, ChinaKey Laboratory of Air-Driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou 324000, ChinaSchool of Environmental and Food Engineering, Liuzhou Vocational & Technical College, Liuzhou 545000, ChinaGuangxi Key Laboratory of Superhard Material, National Engineering Research Center for Special Mineral Material, Guangxi Technology Innovation Center for Special Mineral Material, China Nonferrous Metal (Guilin) Geology and Mining Co., Ltd., Guilin 541004, ChinaGuangxi Key Laboratory of Superhard Material, National Engineering Research Center for Special Mineral Material, Guangxi Technology Innovation Center for Special Mineral Material, China Nonferrous Metal (Guilin) Geology and Mining Co., Ltd., Guilin 541004, ChinaKey Laboratory of Air-Driven Equipment Technology of Zhejiang Province, Quzhou University, Quzhou 324000, China(Si/graphite)@C and (Si/graphite/graphene)@C were synthesized by coating asphalt-cracked carbon on the surface of a Si-based precursor by spray drying, followed by heat treatment at 1000 °C under vacuum for 2h. The impact of graphene on the performance of silicon–carbon composite-based anode materials for lithium-ion batteries (LIBs) was investigated. Transmission electron microscopy (TEM) and selected area electron diffraction (SAED) images of (Si/graphite/graphene)@C showed that the nano-Si and graphene particles were dispersed on the surface of graphite, and thermogravimetric analysis (TGA) curves indicated that the content of silicon in the (Si/graphite/graphene)@C was 18.91%. More bituminous cracking carbon formed on the surface of the (Si/graphite/graphene)@C due to the large specific surface area of graphene. (Si/Graphite/Graphene)@C delivered first discharge and charge capacities of 860.4 and 782.1 mAh/g, respectively, initial coulombic efficiency (ICE) of 90.9%, and capacity retention of 74.5% after 200 cycles. The addition of graphene effectively improved the cycling performance of the Si-based anode materials, which can be attributed to the reduction of electrochemical polarization due to the good structural stability and high conductivity of graphene.https://www.mdpi.com/1996-1944/17/3/754nano-SigraphitegrapheneLi-ion batterieselectrochemical performance |
| spellingShingle | Chengyuan Ni Chengdong Xia Wenping Liu Wei Xu Zhiqiang Shan Xiaoxu Lei Haiqing Qin Zhendong Tao Effect of Graphene on the Performance of Silicon–Carbon Composite Anode Materials for Lithium-Ion Batteries Materials nano-Si graphite graphene Li-ion batteries electrochemical performance |
| title | Effect of Graphene on the Performance of Silicon–Carbon Composite Anode Materials for Lithium-Ion Batteries |
| title_full | Effect of Graphene on the Performance of Silicon–Carbon Composite Anode Materials for Lithium-Ion Batteries |
| title_fullStr | Effect of Graphene on the Performance of Silicon–Carbon Composite Anode Materials for Lithium-Ion Batteries |
| title_full_unstemmed | Effect of Graphene on the Performance of Silicon–Carbon Composite Anode Materials for Lithium-Ion Batteries |
| title_short | Effect of Graphene on the Performance of Silicon–Carbon Composite Anode Materials for Lithium-Ion Batteries |
| title_sort | effect of graphene on the performance of silicon carbon composite anode materials for lithium ion batteries |
| topic | nano-Si graphite graphene Li-ion batteries electrochemical performance |
| url | https://www.mdpi.com/1996-1944/17/3/754 |
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