.png){kind=icon}
.png){kind=icon}
Return
Stepwise ex situ carbon-coated LMFP/C cathodes for high-energy lithium-ion batteries
.png){kind=icon}
PRE
AI
W
G
Z
Q
P
H
T
L
Y
L
S
DOI：10.1007/s11581-026-07073-2.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
LiFe1-xMnxPO4 has emerged as a promising cathode material for lithium-ion batteries, combining the excellent rate capability of LiFePO4 with the high operating voltage of LiMnPO4. However, the extremely low electronic conductivity and lithium-ion diffusion rate of LiMnPO4 severely limit its electrochemical activity, which in turn restricts the electrochemical performance of LiFe1-xMnxPO4. In this paper, carbon-coated LiFe0.3Mn0.7PO4/C porous material was successfully synthesized by co-precipitation followed by secondary calcination, employing a stepwise ex situ carbon coating strategy. Specifically, the LiFe0.3Mn0.7PO4 matrix was prepared by co-precipitation, and the carbon source was introduced for secondary ball milling and calcination to achieve an effective carbon coating. The results of the high-resolution transmission electron microscopy characterization clearly demonstrate that the synthesized material consists of nearly-spherical particles with structural units of approximately 5.08 nm in average diameter. The initial discharge specific capacity of the material is 169.4 mAh g([-1) at a 0.1 C C-rate. After 200 cycles at a 1 C C-rate, the discharge specific capacity remains at 155.74 mAh g([-1), corresponding to a capacity retention rate of 99.77%. The kinetic analysis further confirmed its excellent lithium-ion diffusion capability. This multistage porous LMFP/C has been constructed based on a stepwise synthesis strategy and is stacked with nanoscale spherical particles. This system is expected to be a promising candidate for the development of the next-generation high-performance orthogonal cathode materials for high-capacity lithium-ion batteries.
Keywords:
Lithium-ion Batteries
Lithium Manganese Iron Phosphate
Secondary Calcination
Porous Structure
High-specific-energy
Journal
IF:
2.6
Papers:
3.3K
Citations:
1.3W
Organization
Cited Papers