Comparison of conductive additives for high-power applications of Li-ion batteries
| Autor: | P. A. Novikov, Anatoliy Popovich, Q. Wang, O. S. Medvedev |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
General Chemical Engineering General Engineering General Physics and Astronomy 02 engineering and technology Carbon black Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology Electrochemistry 01 natural sciences Cathode 0104 chemical sciences Dielectric spectroscopy law.invention Chemical engineering law Electrode Slurry General Materials Science Cyclic voltammetry 0210 nano-technology |
| Zdroj: | Ionics. 26:4277-4286 |
| ISSN: | 1862-0760 0947-7047 |
| DOI: | 10.1007/s11581-020-03631-4 |
| Popis: | Carbon nanotubes, conductive poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) binder, conventional carbon black additives, and their mixes are compared with each other in terms of their effect on LiNi0.5Co0.2Mn0.3O2 slurries. The electrochemical characteristics of cathode slurries were studied using cyclic voltammetry, electrochemical impedance spectroscopy, and C-rate experiments in a half-cell configuration. Carbon nanotubes demonstrate the highest specific capacity 100 mAh/g at discharge currents 5–10 C in comparison with 60 mAh/g of poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) binder and 40 mAh/g of Super P carbon black. The LiNi0.5Co0.2Mn0.5O2 electrode with carbon nanotubes showed 98.5% of the capacity retention after 100 cycles. A thorough comparison of three conductive additives demonstrates that carbon nanotubes are the most compatible and promising conductive additives for modern conventional manufacturing of high-power Li-ion batteries. |
| Databáze: | OpenAIRE |
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