Manufacturing process for a coated cathode active material, and a coated cathode active material
ES3073437T3Undetermined Publication Date: 2026-07-13BASF SE
Patent Information
- Authority / Receiving Office
- ES · ES
- Patent Type
- Patents
- Current Assignee / Owner
- BASF SE
- Filing Date
- 2021-12-10
- Publication Date
- 2026-07-13
AI Technical Summary
Technical Problem
Existing lithium ion batteries have limitations in energy density and cycling stability, particularly in cathode materials, necessitating improvements for higher specific capacity and simpler processing to achieve optimal energy density and stability.
Method used
Development of a particulate electrode active material with a core-shell structure, where the core comprises a composite lithium metal oxide (Li1+x(TM'1-x)O2) and the shell comprises boron or tungsten, with specific compositional ranges and processing steps to enhance energy density and capacity retention.
Benefits of technology
The innovative electrode active material exhibits excellent energy density, capacity retention, and cycling stability, achieving high performance in lithium ion batteries.
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Abstract
Process for manufacturing an active electrode material wherein said process comprises the following steps: (a) Providing a hydroxide TM(OH) <2> or an oxyhydroxide of TM where TM is one or more metals and contains Mn and, optionally, Co, and 85 to 95 mol% of Ni, referring to the sum of Ni, Co and Mn, (b) Dry said hydroxide TM(OH) <2> or TM oxyhydroxide at a temperature in the range of 400 to 600 °C, thereby obtaining a TM oxide or oxyhydroxide with a residual moisture content of 200 to 500 ppm, (c) mixing said oxide or oxyhydroxide from step (b) with a lithium source and with at least one Mg or Al compound and with at least one Ti or Zr compound, (d) heat-treating the mixture obtained from step (c) at a temperature in the range of 550 to 875 °C, followed by (e) optionally, a step (e) of treating the material obtained from step (d) with an aqueous medium, followed by a liquid-solid separation step,and (f) a step (f) of adding a tungsten or boron compound to the material obtained from step (d) or (e), respectively, and subsequent heat treatment at a temperature in the range of 150 to 600 °C.,
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