▎ 摘　　要

NOVELTY - A lithium-rich lithium iron manganese sulfur phosphate material is prepared through small-sized atom doping and anion cluster regulation, to construct a highly stable atomic-scale relatively open crystal structure. In the material structure, manganese doping improves the voltage platform and specific capacity, additional lithium occupies iron and manganese positions, to form a relatively open structure which is beneficial to increase the migration speed of lithium ions, where anion clusters introduce sulfate radicals to reduce stress and facilitate polarization. USE - The lithium-rich sulfur iron phosphate manganese material is used electrode pole piece of energy storage devices such as lithium-ion secondary batteries, lithium-ion capacitors, lithium-air batteries, lithium-sulfur batteries and derivative energy storage devices (all claimed). ADVANTAGE - The high-specific-energy lithium-rich lithium iron manganese phosphate material is prepared by a cost-effective method based on material design which combines small-sized metal ions occupying transition metal sites, and anion group regulation methods, to form a relatively open crystal structure, and enhance material stability. Through the introduction of excess lithium ions to occupy transition metal iron and manganese sites, a crystal open structure is formed on the atomic scale, to increase the migration ability of lithium ions in the pores of the olivine structure, and improve the cycle life and specific capacity of the material. Alternately, through the method of anionic group regulation, a small amount of sulfate is introduced into the original phosphate anion cluster of the material, to reduce the material stress on the microstructure and enhance the polarization ability of the material, to enable stable cycle of the material under high voltage so that the specific capacity, cycle performance and rate performance of the material are greatly improved. DETAILED DESCRIPTION - A lithium-rich lithium iron manganese sulfur phosphate material prepared through small-sized atom doping and anion cluster regulation, to construct a highly stable atomic-scale relatively open crystal structure. The material has molecular formula LiFe1-xMnx1-yLiy(PO4)1-y (SO4)y, isomorphic to lithium iron manganese phosphate, Mn doping improves the voltage platform and specific capacity, additional lithium occupies iron and manganese positions, to form a relatively open structure which is beneficial to increase the migration speed of lithium ions, anion clusters introduce sulfate radicals to reduce stress and facilitate polarization. An INDEPENDENT CLAIM is included for electrode pole piece which comprises a current collector, conductive additive and lithium-rich lithium iron manganese sulfur phosphate lithium material.