Nanostructure and its effect on electrochemical properties of polyanionic Li(2)CoSiO(4)for lithium ion batteries
文献类型：期刊论文
| 作者 | Du, Wenqiang; Tian, Ailing; Zhang, Ying; Chen, Zhenlian; Zhang, Zhifeng; Wang, Deyu; Li, Jun |
| 刊名 | NANOTECHNOLOGY
 |
| 出版日期 | 2020 |
| 卷号 | 31期号:42 |
| 关键词 | HYDROTHERMAL SYNTHESIS CATHODE MATERIAL LI2COSIO4 POLYMORPHS POSITIVE-ELECTRODE PERFORMANCE COMPOSITE LI2FESIO4 CARBON |
| DOI | 10.1088/1361-6528/aba02d |
| 英文摘要 | This work reports a facile strategy to synthesize carbon-coated Li2CoSiO4/C particles with rich nanostructures by a two-step scheme starting with a low-temperature hydrothermal method. The size and morphology of particle aggregates can be regulated by the (OH-) concentration and viscosity of the precursor solution, a mixture of ethylene glycol and deionized water, for the hydrothermal synthesis. In addition to the good electrical conductivity from the carbon coating, the size of the primary nanoparticles and the mesopore associated with the aggregations play an important role in improving the electrochemical properties of polyanionic Li2CoSiO4. The low-dimensional belt-like and sheet-like Li2CoSiO4/C nanomaterials present a higher reversible capacity 136.6 mAh g(-1)and 147 mAh g(-1), respectively, in the first charging-discharging cycle between 2 V and 4.6 V. XRD, SEM/TEM, and EDS are used to characterize the crystalline structure and aggregation patterns. TGA and Raman spectra are employed to analyze the carbon coating on different morphologies. The analysis of electrochemical impedance spectroscopy highlights the critical role of the interface between the electrolyte and particles. This study provides insights into the rational design and synthesis of high-performance polyanionic cathodes including silicates. |
| 学科主题 | Science & Technology - Other Topics ; Materials Science ; Physics |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/20402]  |
| 专题 | 2020专题 2020专题_期刊论文 |
| 作者单位 | 1.Li, J (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Ningbo 315201, Peoples R China. 2.Li, J (corresponding author), Univ Chinese Acad Sci, Beijing 100049, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Du, Wenqiang,Tian, Ailing,Zhang, Ying,et al. Nanostructure and its effect on electrochemical properties of polyanionic Li(2)CoSiO(4)for lithium ion batteries[J]. NANOTECHNOLOGY,2020,31(42). |
| APA | Du, Wenqiang.,Tian, Ailing.,Zhang, Ying.,Chen, Zhenlian.,Zhang, Zhifeng.,...&Li, Jun.(2020).Nanostructure and its effect on electrochemical properties of polyanionic Li(2)CoSiO(4)for lithium ion batteries.NANOTECHNOLOGY,31(42). |
| MLA | Du, Wenqiang,et al."Nanostructure and its effect on electrochemical properties of polyanionic Li(2)CoSiO(4)for lithium ion batteries".NANOTECHNOLOGY 31.42(2020). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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