Sponge-like NaFe2PO4(SO4)2@rGO as a high-performance cathode material for sodium-ion batteries

摘要: The traditional methods of preparing cathode materials usually require long time consuming and high temperature annealing, which consume a lot material financial resources. Herein, we report an ultrafast self-propagating combustion process to prepare sponge-like NaFe2PO4(SO4)2@reduced graphene oxide (NFPS@rGO) with favorable surface characteristics. This product is successfully prepared in short well coated reduced due its loose porous structure. Benefiting from the carbon coating, NFPS@rGO demonstrates enhanced rate cyclic performance than that pristine NFPS. discharge specific capacity still retains 43.4 mA h g−1 at current density 500 g−1. After 100 cycles 50 g−1, retention 83.3%, also higher NFPS by 34.7%. In addition, fabricated hard carbon‖NFPS@rGO full-cell exhibits performance. study provides meaningful guidance for modification sodium-ion batteries promotes practical possibility.