Sodium-Chromium-Titanium-Manganese Phosphate Self-Supporting Electrode Material, and Preparation Method Therefor and Use Thereof

The present disclosure relates to the field of sodium-ion batteries and discloses a sodium-chromium-titanium-manganese phosphate self-supporting electrode material, and a preparation method therefor and use thereof; the sodium-chromium-titanium-manganese phosphate self-supporting electrode material is a composite material of sodium-chromium-titanium-manganese phosphate and carbon, and the sodium-chromium-titanium-manganese phosphate has a chemical formula of NaCrTiMn(PO), wherein 0