Effect of microstructure morphology on Li-ion battery graphite anode performance: Electrochemical impedance spectroscopy modeling and analysis
文献类型：期刊论文
| 作者 | Habte, Bereket Tsegai1,2; Jiang, Fangming1
|
| 刊名 | SOLID STATE IONICS
 |
| 出版日期 | 2018 |
| 卷号 | 314页码:81-91 |
| 关键词 | Microstructure Simulated annealing method Equivalent circuit Electrochemical impedance spectroscopy |
| ISSN号 | 0167-2738 |
| DOI | 10.1016/j.ssi.2017.11.024 |
| 通讯作者 | Jiang, Fangming(jiangfm@ms.giec.ac.cn) |
| 英文摘要 | Carbon graphite has received much attention over the last decades as the best candidate for negative Li-ion battery electrodes due to its thermal stability and optimal cycling capability. This paper aims to give a comprehensive account of the effect of microstructure morphology such as porosity, tortuosity, solid-electrolyte interface area and active material particle geometry on the overall performance of an electrode. Simulated annealing method (SAM) was used to reconstruct a virtual microstructure of a graphite anode based on different active material particle configuration. The underlying species transport and reaction kinetics of an electrochemical cell were modeled through an electrical circuit composed of different components. Simulated results show that active material particle geometry directly influences the tortuosity and specific surface area of the microstructure, thus affects the solid and electrolyte phase electronic/ionic mobility. Nyquist plot provided an overall impedance of ionic and electronic diffusion over a frequency range of 0.1 mHz to 20 kHz. The semi-circle in the high-frequency region is associated with charge transfer resistance and dielectric behavior of the solid electrolyte interface (SEI) while the 45 degrees slope at the low-frequency region is a result of lithium diffusion into the solid electrode. |
| WOS关键词 | RECHARGEABLE LITHIUM BATTERIES ; ELECTRODES ; INTERCALATION ; RECONSTRUCTION ; LAYER ; TRANSPORT ; CATHODE |
| 资助项目 | Natural Science Foundation of Guangdong Province[2015A030308019] ; Natural Science Foundation of Guangdong Province[2016A030313172] ; Natural Science Foundation of Guangdong Province[2017B010120003] ; Chinese academy of Sciences |
| WOS研究方向 | Chemistry ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000423889100013 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | Natural Science Foundation of Guangdong Province ; Chinese academy of Sciences |
| 源URL | [http://ir.giec.ac.cn/handle/344007/23519]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Jiang, Fangming |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangdong Key Lab New & Renewable Energy Res & De, Lab Adv Energy Syst,CAS Key Lab Renewable Energy, Guangzhou, Guangdong, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Habte, Bereket Tsegai,Jiang, Fangming. Effect of microstructure morphology on Li-ion battery graphite anode performance: Electrochemical impedance spectroscopy modeling and analysis[J]. SOLID STATE IONICS,2018,314:81-91. |
| APA | Habte, Bereket Tsegai,&Jiang, Fangming.(2018).Effect of microstructure morphology on Li-ion battery graphite anode performance: Electrochemical impedance spectroscopy modeling and analysis.SOLID STATE IONICS,314,81-91. |
| MLA | Habte, Bereket Tsegai,et al."Effect of microstructure morphology on Li-ion battery graphite anode performance: Electrochemical impedance spectroscopy modeling and analysis".SOLID STATE IONICS 314(2018):81-91. |
入库方式： OAI收割
来源：广州能源研究所
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