期刊
SCIENTIFIC REPORTS
卷 9, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41598-019-43140-7
关键词
-
资金
- National Natural Science Foundation of China [21777108]
A composite of olivine lithium manganese iron phosphate (LiMn0.5Fe0.5PO4), external carbon coating and internal embedded carbon flakes, EC-IC-LMFP, is prepared by using phytic acid (PhyA) as phosphorus source via solvotherma I process followed by calcination. The composite with improved electronic conductivity and ion diffusivity presents an ultrahigh reversible specific capacity of 193 mAh g(-1) at 0.1C, and an excellent cycling stability of 93% capacity retention after 100 cycles at 1C when applied as a cathode material for Li-ion batteries (LIBs). Additionally, the composite fine powders exhibit a special microstructure and its volumetric energy density is estimated to reach 1605 Wh L-1, much larger than the commercial LiFePO4.
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