| Autor: |
Wang, Wen, Qiao, Yuqing, He, Li, Dumée, Ludovic, Kong, Lingxue, Zhao, Minshou, Gao, Weimin |
| Zdroj: |
Ionics; Aug2015, Vol. 21 Issue 8, p2119-2125, 7p |
| Abstrakt: |
LiFeSmPO/C cathode materials were synthesized though a facile hydrothermal method. Compared with high-temperature solid-phase sintering, the method can allow for the fabrication of low Sm content (2 %), a scarce and expensive rare earth element, while the presence of an optimized carbon coating with large amount of sp-type carbon sharply increases the material's electrochemical performance. The high-rate dischargeability at 5 C, as well as the exchange current density, can be increased by 21 and 86 %, respectively, which were attributed to the fine size and the large cell parameter a/ c as much. It should be pointed out that the a/ c value will be increased for the LiFePO Sm-doped papered by both of the two methods, while the mechanism is different: The value c is increased for the front and the value a is decreased for the latter, respectively. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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