Doped modified carbon coated sodium titanium phosphate composite material as well as preparation method and application thereof

The invention discloses a doped modified carbon-coated sodium titanium phosphate composite material and a preparation method thereof, the doped modified carbon-coated sodium titanium phosphate composite material is a copper and tin co-doped modified carbon-coated sodium titanium phosphate composite material, the mass fraction of copper is 1%-8%, the mass fraction of tin is 1%-8%, and the mass fraction of carbon is 3%-12%. According to the preparation method of the doped modified carbon coated sodium titanium phosphate composite material, by-products are harmless and pollution-free, and the doped modified carbon coated sodium titanium phosphate composite material can be applied to industrial mass production. The battery assembled by adopting the doped modified carbon-coated sodium titanium phosphate composite material has the electrochemical properties of large specific capacity and long circulation. 本发明公开了一种掺杂改性的碳包覆的磷酸钛钠复合材料及其制备方法，为铜、锡共掺杂改性的碳包覆的磷酸钛钠复合材料，其中，铜的质量分数为1%～8%，锡的质量分数为1%～8%，碳的质量分数为3%～12%。本发明的掺杂改性的碳包覆的