Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Effect of microstructure morphology on Li-ion battery graphite anode performance: Electrochemical impedance spectroscopy modeling and analysis | |
Habte, Bereket Tsegai1,2; Jiang, Fangming1
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| 2018 | |
| Source Publication | SOLID STATE IONICS
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| ISSN | 0167-2738 |
| Volume | 314Pages:81-91 |
| Corresponding Author | Jiang, Fangming(jiangfm@ms.giec.ac.cn) |
| Abstract | 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. |
| Keyword | Microstructure Simulated annealing method Equivalent circuit Electrochemical impedance spectroscopy |
| DOI | 10.1016/j.ssi.2017.11.024 |
| WOS Keyword | RECHARGEABLE LITHIUM BATTERIES ; ELECTRODES ; INTERCALATION ; RECONSTRUCTION ; LAYER ; TRANSPORT ; CATHODE |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Chemistry ; Physics |
| Funding Organization | Natural Science Foundation of Guangdong Province ; Chinese academy of Sciences |
| WOS Subject | Chemistry, Physical ; Physics, Condensed Matter |
| WOS ID | WOS:000423889100013 |
| Publisher | ELSEVIER SCIENCE BV |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/23520 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Jiang, Fangming |
| Affiliation | 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 |
| First Author Affilication | GuangZhou Institute of Energy Conversion,Chinese Academy of Sciences |
| Recommended Citation 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. |
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