Study on LiFe1 − xSm xPO4/C used as cathode materials for lithium-ion batteries with low Sm component

Wen Wang, Yuqing Qiao, Li He, Ludovic Dumée, Lingxue Kong, Minshou Zhao, Weimin Gao

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

LiFe1 − xSmxPO4/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 sp2-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 LiFePO4 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.

Original languageBritish English
Pages (from-to)2119-2125
Number of pages7
JournalIonics
Volume21
Issue number8
DOIs
StatePublished - 31 Aug 2015

Keywords

  • Cathodes
  • Doping
  • Electrochemical characterizations
  • Li-ion batteries

Fingerprint

Dive into the research topics of 'Study on LiFe1 − xSm xPO4/C used as cathode materials for lithium-ion batteries with low Sm component'. Together they form a unique fingerprint.

Cite this