2results about How to "High theoretical capacity" patented technology

The application discloses an aluminum ion battery positive electrode material and a preparation method and application thereof. x Al y MnO2.nH2O, wherein, 0<=x<=0.3, 1 / 3<=y<2 / 3, 0<=n<=2, and x and n are not 0 at the same time; the preparation method comprises the following steps: mixing an aluminum salt solution and a precursor K z MnO2.mH2O, performing a heating reaction, and obtaining the aluminum ion positive electrode material through heat treatment of a reaction product. The aluminum ion battery positive electrode material has the advantages of high specific capacity, excellent cycle performance and rate performance, low cost, and the like, is beneficial to promoting commercial application of the aluminum ion battery, and has a very wide application prospect.

This invention discloses a lithium-rich manganese-based layered oxide composite cathode material and its preparation method, belonging to the field of lithium-ion battery technology. The method includes: adding water to a nickel source, a cobalt source, and a manganese source to obtain a mixed solution; adding sodium carbonate solution to adjust the pH; washing with deionized water and centrifuging; drying; mixing with lithium salt; and pre-calcining to obtain Li. 1.2 Ni 0.13 Co 0.13 Mn 0.54 O 1.8 F 0.2 The material was then subjected to a process involving the sequential addition of a carbon source and an organic solvent. The resulting mixture was heated under a mixed atmosphere to obtain a lithium-rich manganese-based basal oxide material. Na₂WO₄ and pyrrole were then added, and the mixture was dissolved in deionized water to obtain a composite cathode material, Li. 1.2 Ni 0.13 Co 0.13 Mn 0.54 O 1.8 F 0.2 @N,S-C@Na2WO4@PPy. The composite cathode material of this invention has uniform particles, stable structure, and exhibits considerable wide potential window reversible capacity, excellent rate performance, and stable cycle life.