Advanced Performance of Annealed Ni-P/(Etched Si) Negative Electrodes for Lithium-Ion Batteries
| Autor: | Yoshihiro Fujita, Kazuki Yamaguchi, Hiroyuki Usui, Hiroki Sakaguchi, Masakuni Narita, Yasuhiro Domi |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment 020209 energy Inorganic chemistry chemistry.chemical_element silicon 02 engineering and technology lithium-ion battery 021001 nanoscience & nanotechnology Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Ion chemistry Electrode 0202 electrical engineering electronic engineering information engineering Materials Chemistry Electrochemistry Lithium Ni-P coating 0210 nano-technology |
| Zdroj: | This research was published by The Electrochemical Society: DOMI, Yasuhiro, et al. Advanced Performance of Annealed Ni-P/(Etched Si) Negative Electrodes for Lithium-Ion Batteries. Journal of The Electrochemical Society, 2017, 164.13: A3208-A3213. https:// |
| ISSN: | 0013-4651 |
| Popis: | The electrochemical performance of variously treated Ni-P-coated Si (Ni-P/Si) negative electrodes for lithium-ion batteries was investigated. X-ray diffraction analysis revealed the formation of nickel silicide (NiSi and NiSi2) after annealing, which improved the adhesion between the Ni-P coating layer and Si particles. Spotty Ni-P particles did not aggregate on an etched Si surface due to an anchor effect, even after annealing, whereas the particles aggregated on an untreated Si surface. An annealed Ni-P/(etched Si) negative electrode maintained a discharge capacity of 2000 mA h g-1 even at the 100th cycle in an organic electrolyte, which can be attributed to Ni-P particles remaining on the surface of the annealed Ni-P/(etched Si) electrode even after the charge-discharge test. The annealed Ni-P/(etched Si) electrode also exhibited superior cycle performance with a reversible capacity of 1000 mA h g-1 over 750 and 1100 cycles in an organic electrolyte containing film-forming additive and an ionic liquid electrolyte, respectively. Consequently, the annealed Ni-P/(etched Si) electrode achieved both high reversible capacity and long cycle life. |
| Databáze: | OpenAIRE |
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