Low-crystallized carbon materials for lithium-ion secondary batteries
| Autor: | Akira Kawakami, Keiichiro Uenae, Hayato Higuchi |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Lithium vanadium phosphate battery
Renewable Energy Sustainability and the Environment Discharge efficiency Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element Ion Metal chemistry Chemical engineering visual_art visual_art.visual_art_medium Lithium Graphite Electrical and Electronic Engineering Physical and Theoretical Chemistry Carbon Pyrolysis |
| Zdroj: | Journal of Power Sources. 68:212-215 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/s0378-7753(96)02587-6 |
| Popis: | The charge/discharge characteristics and mechanisms of low-crystallized carbons which have larger capacity than graphite have been investigated. Low-crystallized carbons have two principal types of charge curve versus Li metal. Hard carbons prepared at 1100 °C (H11) show charge curves with a low average potential, whereas soft carbons pyrolyzed at 700 °C (S7) show those with a high average potential. These results might depend on the lithium diffusion rate in their non-crystallized sites. The 18650-type Li-ion batteries using H11 have comparable capacity versus graphite, whereas the batteries using S7 have low capacity because of their low charge/discharge efficiency. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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