Na4Fe3(PO4)2P2O7/C nanospheres as low-cost, high-performance cathode material for sodium-ion batteries

A Novel NASICON‐Typed Na4VMn0.5Fe0.5(PO4)3 Cathode for High‐Performance Na‐Ion Batteries

“…[3] For this reason, the benign and cheap 3d transition metals such as Ti, Fe, and Mn seem to be the promising alternatives to vanadium because the reversible redox reaction involved in Ti 3+ / Ti 4+ , Fe 2+ /Fe 3+ , and Mn 2+ /Mn 3+ couples have been proposed [3] and investigated in the NASICON compounds for NIBs. [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] In response, Wang et al reported a Na 2 VTi(PO 4 ) 3 material for symmetric NIBs, which behaves an ultralong lifespan over 10 000 cycles. [10] However, the low voltage platform of Ti 3+ /Ti 4+ (only 2.1 V) intrinsically determines its limited utilization in terms of the application cathodes.…”

Na 3 V 2 (PO 4 ) 3 @NC composite derived from polyaniline as cathode material for high‐rate and ultralong‐life sodium‐ion batteries

“…Similar to LIBs, the performance of SIBs largely depends on the cathode materials. At present, the study on cathode materials of SIBs is mainly concentrated on transition metal oxides, phosphates, pyrophosphate, and Prussian blues . However, the intrinsic properties of these materials, such as serious capacity decay and voltage platform receding because of structural variations during Na + ‐intercalation/removal process or occurring the side reaction, hinder their application in SIBs.…”

“…Similar to LIBs, the performance of SIBs largely depends on the cathode materials. At present, the study on cathode materials of SIBs is mainly concentrated on transition metal oxides, [11][12][13][14] phosphates, [15][16][17][18] pyrophosphate, [19][20][21][22][23] Abbreviations: CV, cyclic voltammetry; EIS, electrochemical impedance spectroscopy Please proceed accordingly; FT-IR, fourier transform infrared; LIBs, lithium-ion batteries; NVP@NC, N-doped carbon-composited Na 3 V 2 (PO 4 ) 3 ; NVP/C, carbon-composited Na 3 V 2 (PO 4 ) 3 ; NC, N-doped carbon layer; NVP, Na 3 V 2 (PO 4 ) 3 ; PAN, polyaniline; PVDF, polyvinylidene fluoride; SEM, scanning electron microscopy; SIBs, sodium ion batteries; TEM, transmission electron microscopy; TG, thermogravimetric; XPS, X-ray photoelectron spectrometer; XRD, powder X-ray diffraction. and Prussian blues.…”

A Scalable Approach to Na2FeP2O7@Carbon/Expanded Graphite as a Low‐Cost and High‐Performance Cathode for Sodium‐Ion Batteries

“…[35,36] In order to solve the above problem, many approaches and methodologies have been explored to improving the electrochemical performance of Na 2 FeP O 7 cathode. [37][38][39] One of the most effective methods is nano-sizing materials to obtain a high surface area and thus shorten the diffusion path. [40] Another typical and common method is composing the active materials with electronically conductive substances (e. g. carbon, graphene).…”