کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1285523 | 1497927 | 2016 | 6 صفحه PDF | دانلود رایگان |
• LFP in situ coated with HPNGM is successfully synthesized.
• The HPNGM increases the electrons and Li+ diffusion rate.
• The hierarchical porous structure favors the electrolyte access to active material.
• The composite exhibits excellent rate capability and cycling stability.
LiFePO4 in situ coated with hierarchical porous nitrogen-doped graphene-like membrane (HPNGM) composite derived from a electrospun polymer membrane (EPM) precursor has been achieved for the first time. The N-doped graphene-like membrane which is in situ coating on LiFePO4 can provide a highly conductive layer, and the hierarchical porous structure facilitates Li+ transfer. The composite exhibits a high reversible capacity (171 mAh g−1 at 0.1 C), excellent high-rate capability and cycling stability. In addition to construct the traditional structure of nanofiber or nanowire, the EPM can also form graphene-like structure after annealing, which is a new application in constructing sheet structure by electrospinning.
Journal: Journal of Power Sources - Volume 305, 15 February 2016, Pages 122–127