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Effect of High-Voltage Additives on Formation of Solid Electrolyte Interphases in Lithium-Ion Batteries
| Content Provider | MDPI |
|---|---|
| Author | Chen, Minjing Huang, Yunbo Shi, Zhepu Luo, Hao Liu, Zhaoping Shen, Cai |
| Copyright Year | 2022 |
| Description | Solid electrolyte interphase (SEI) formed at the interface in lithium-ion batteries plays an important role in isolating electrons and permeating ions during charging/discharging processes. Therefore, the formation of a good interface is crucial for better battery performance. In this study, additives based on adiponitrile (ADN) and trimethyl borate (TMB) were employed to broaden the electrochemical window and form a good SEI layer. Electrochemical Atomic force microscopy (EC-AFM) was used for in situ studies of film-formation mechanisms in high-voltage electrolytes on high-temperature pyrolytic graphite (HOPG), as well as Li- and Mn-rich (LMR) materials. X-ray photoelectron spectroscopy (XPS) combined with electrochemical methods revealed a synergistic reaction between the two additives to form a more stable interfacial film during charging/discharging processes to yield assembled batteries with improved cycle performance, its capacity increased from below 100 mAh/g to 200 mAh/g after 50 cycles. In sum, these findings would have great significance for the development of high voltage lithium-ion batteries with enhanced performance. |
| Starting Page | 3662 |
| e-ISSN | 19961944 |
| DOI | 10.3390/ma15103662 |
| Journal | Materials |
| Issue Number | 10 |
| Volume Number | 15 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-05-20 |
| Access Restriction | Open |
| Subject Keyword | Materials Solid Electrolyte Interphase High-voltage Electrolyte Additives Electrochemical Atomic Force Microscopy Lithium-ion Batteries |
| Content Type | Text |
| Resource Type | Article |
