Self-assembled wafer-like porous NaTi2(PO4)3 decorated with hierarchical carbon as a high-rate anode for aqueous rechargeable sodium batteries

摘要: The three-dimensional (3D) hierarchical porous structure is ideal for constructing high-performance electrode materials and offers advantages such as large surface area, stable structural integrity efficient ionic transport. In this report, we prepared a novel wafer-like 3D structured NaTi2(PO4)3/C by facile self-assembled strategy. NaTi2(PO4)3 crystal was not only coated nanoscale carbon layer but also embedded in microscale network, which into secondary particle plate-like shape. the constitutes framework with bicontinuous electronic conductive skeleton, showing structure. When used an anode aqueous system, composite exhibited better sodium intercalation kinetics enhanced high-rate capability than nonporous samples. Moreover, full rechargeable battery fabricated using Na0.44MnO2 cathode. cell superior high rate property ultralong-life performance, delivered 64% capacity at 30 C retained 67% after 400 cycles alternate 50 5 C. view of highly electron/ion transport pathways robust stability, put forward new strategy nanoarchitecture tailoring to achieve electrodes.