Related Experiment Video
Updated: Aug 19, 2025
Preparation of Graphene Liquid Cells for the Observation of Lithium-ion Battery Material
Published on: February 5, 2019
Three-Dimensional Holey Graphene Modified Na4 Fe3 (PO4 )2 (P2 O7 )/C as a High-Performance Cathode for Rechargeable
Xiaopeng Li1, Yan Meng2, Dan Xiao1,2
1College of Chemical Engineering, Sichuan University, 610065, Chengdu, P. R. China.
Abstract:
Polyanion-type Na4 Fe3 (PO4 )2 (P2 O7 ) (NFPP) is a promising cathode material for sodium-ion batteries due to its low cost and high safety. Herein, a three-dimensional (3D) holey graphene (HG) modified NFPP/C material (NFPPCHG) has been successfully prepared by a simple and scalable ball milling strategy with sodium phytate and ferrous oxalate as precursors. The introduction of HG can obviously improve the specific surface area, electronic conductivity, and ions transport performance of NFPPCHG and largely enhance its electrochemical properties. The prepared NFPPCHG delivers a high reversible capacity of 118 mAh g-1 at 0.2 C and keeps a considerable capacity of 53 mAh g-1 even at an ultrahigh rate of 100 C. NFPPCHG also shows excellent performance at 55 °C and -20 °C. Moreover, in situ distribution of relaxation time analysis further demonstrates NFPPCHG has superior electrochemical kinetics. In addition, the HC//NFPPCHG full cell displays good performance, suggesting great potential of the prepared material for practical applications.
