Rechargeable sodium ion battery(SIB)has attracted much attention ***,the deficiency of high-performance electrode materials limits its commercial *** new cost-effective,high safe electrode materials and full battery m...
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Rechargeable sodium ion battery(SIB)has attracted much attention ***,the deficiency of high-performance electrode materials limits its commercial *** new cost-effective,high safe electrode materials and full battery matching technology is an important direction of future *** this work,a novel watermelon-like multicore-shell Fe(PO_(3))_(2)@C nanocapsule anode material is designed via a facile and eco-friendly process for high performance ***(PO_(3))_(2)@C composite anode exhibits remarkable electrochemical performances for SIB,showing high sodium storage capacity(452 mAh·g^(-1) at 0.2 A·g^(-1)),good rate(235 mAh·g^(-1) at 10 A·g^(-1)),stable long-term cycling life(210 mAh·g^(-1) over 2,000 cycles under 5 A·g^(-1)),and superior high-low temperature ***,a new type all iron-based phosphate full battery with high specific capacity is constructed,which can output initial capacity of 309 mAh·g^(-1) and a high energy density of 254,107,and 82 Wh·kg^(-1) at the power density of 186,917,and 1,640 W·kg^(-1) at room *** exceptional performance of multicoreshell Fe(PO_(3))_(2)@C nanocapsule structure can be ascribed to the large specific surface,good structure stability,high conductivity,as well as the multiple layer protection for superior electron/ion transportation.
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