LiMn2 − xCoxO4 cathode with enhanced cycleability
| Autor: | Y. Todorov, A. Trifonova, B. Banov, V. Manev, A. Momchilov |
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| Rok vydání: | 1997 |
| Předmět: |
Diffraction
Materials science Renewable Energy Sustainability and the Environment Inorganic chemistry Oxide Energy Engineering and Power Technology Crystal structure Electrochemistry Lithium hydroxide Cathode law.invention Ion chemistry.chemical_compound chemistry law Electrical and Electronic Engineering Physical and Theoretical Chemistry |
| Zdroj: | Journal of Power Sources. 68:578-581 |
| ISSN: | 0378-7753 |
| DOI: | 10.1016/s0378-7753(97)02647-5 |
| Popis: | Lithium-manganese-cobalt oxides, LiMn 2-x Co x O 2 with 0 < x < 0.2 were synthesized by a solid-state multi-steep reaction, in air, from a mixed manganese-cobalt oxide with lithium hydroxide. The samples were characterized by X-ray diffraction and electrochemical tests. The crystal structure of the obtained compounds is spinel-related. The discharge capacity of an Li/LiMn 2-x Co x O 2 cell with x = 0.1 was 114 mAh/ g for the fifth discharge and stayed almost the same at the cycle no. 100 - 107 mAh/g - related to the cathode capacity. The demonstrated cycling stability for 100 cycles reaches 99.93%. The improvement in cycleability can be attributed to the stabilizing role of Co 3+ ions, substituting Mn 3+ in the initial structure. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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