Silicon Carbon Nanoparticles Coated with Reduced Graphene Oxide with High Specific Capacity and High-Rate Performance as Anode Material for Lithium-Ion Battery | |
Shi, Xiangyu1; Liu, Jifei2; Dai, Jianfeng1; Qi, Yufeng1 | |
刊名 | Nano |
2020-11-01 | |
卷号 | 15期号:11 |
关键词 | Anodes Electric discharges Graphene Heat treatment Nanoparticles Reduced Graphene Oxide SiliconAnode material for lithium ion batteries Charge and discharge capacities Electrical conductivity Electrochemical performance Electrochemical process Heat treatment process High specific capacity Reduced graphene oxides (RGO) |
ISSN号 | 17932920 |
DOI | 10.1142/S1793292020501490 |
英文摘要 | Silicon carbon nanoparticles (SCNPs) coated with reduced graphene oxide (rGO) were fabricated by a hydrothermal method and subsequently by a simple heat treatment process. SCNPs/rGO exhibit excellent electrochemical performance which not only attributes the rGO layer to inhibit the volumetric expansion of silicon and reduce the impedance between the active material and lithium ions during the electrochemical process, but also improves the electrical conductivity of SCNPs/rGO. The as-prepared compound was cyclically tested at a current density of 150mA/g, with the first charge and discharge capacities of 3152.2mAh/g and 3342.7mAh/g, respectively. Moreover, the electrochemical performance of SCNPs/rGO was better than SCNPs. The RCT values for fresh battery, after 1 cycle and 100 cycles, are 120.9ω, 120.5ω and 104ω. Thus, compared with SCNPs, SCNPs/rGO exhibited lower overall impedance values. These results indicate that the addition of graphene layer significantly improved the electrochemical performance of SCNPs electrodes and reduced the internal resistance of the battery. © 2020 World Scientific Publishing Company. |
WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
语种 | 英语 |
出版者 | World Scientific |
WOS记录号 | WOS:000599940000001 |
内容类型 | 期刊论文 |
源URL | [http://ir.lut.edu.cn/handle/2XXMBERH/132335] |
专题 | 理学院 |
作者单位 | 1.School of Science, Lanzhou University of Technology, Lanzhou, Gansu; 730050, China; 2.School of New Energy and Power Engineering, Lanzhou Jiaotong University, Lanzhou, Gansu; 730070, China |
推荐引用方式 GB/T 7714 | Shi, Xiangyu,Liu, Jifei,Dai, Jianfeng,et al. Silicon Carbon Nanoparticles Coated with Reduced Graphene Oxide with High Specific Capacity and High-Rate Performance as Anode Material for Lithium-Ion Battery[J]. Nano,2020,15(11). |
APA | Shi, Xiangyu,Liu, Jifei,Dai, Jianfeng,&Qi, Yufeng.(2020).Silicon Carbon Nanoparticles Coated with Reduced Graphene Oxide with High Specific Capacity and High-Rate Performance as Anode Material for Lithium-Ion Battery.Nano,15(11). |
MLA | Shi, Xiangyu,et al."Silicon Carbon Nanoparticles Coated with Reduced Graphene Oxide with High Specific Capacity and High-Rate Performance as Anode Material for Lithium-Ion Battery".Nano 15.11(2020). |
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