• 专利标题:   Producing electrode material for forming a lithium-ion battery by combining electrode precursor material and humic acid in an alkaline slurry, drying the alkaline slurry, and heating the powder to produce the electrode material.
  • 专利号:   WO2022031810-A1, US2022115641-A1, US2022123316-A1
  • 发明人:   HOU X, XU S
  • 专利权人:   UNIV NORTH DAKOTA, UNIV NORTH DAKOTA
  • 国际专利分类:   H01M004/00, H01M004/02, H01M004/04, H01M004/36, H01M004/583, H01M010/0525, H01M004/133, H01M004/1393, H01M004/587, H01M004/62
  • 专利详细信息:   WO2022031810-A1 10 Feb 2022 H01M-004/583 202215 Pages: 39 English
  • 申请详细信息:   WO2022031810-A1 WOUS044488 04 Aug 2021
  • 优先权号:   US706191P, US124487P, US558023, US558080

▎ 摘  要

NOVELTY - An electrode material for a lithium-ion battery is produced by combining an electrode precursor material and humic acid (14) in an alkaline slurry (44); drying the alkaline slurry to produce a powder of humic acid-coated electrode precursor material; and heating the powder (48) to produce the electrode material comprising graphene-coated particles. USE - Production of electrode material for forming a lithium-ion battery (claimed). ADVANTAGE - Graphene can be incorporated into electrode materials to greatly improve the performance of lithium-ion batteries (LIB) by increasing conductivity and improving cycling stability and low-temperature performance. The graphene-coated cathode materials show improvement in electrochemical performance over conventional cathode materials that have amorphous carbon coatings and show superior coating uniformity and consistency in manufacture over methods using graphene or graphene oxide as the starting carbon source. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for forming an electrode of a lithium-ion battery which involves forming an electrode material; and applying the electrode material to a current collecting foil to form the electrode. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram of the method for producing a graphene-coated electrode material using the high purity humic acid for lithium-ion batteries. 14Humic acid 42Mixing element 44Slurry 46Drying element 48Powder