Composite ceramic electrolyte particle with hydrophobic protective layer for battery electrode

A composite ceramic electrolyte particle with a hydrophobic protective layer for a battery electrode;

• the composite ceramic electrolyte particle being a composite LLZO particle;
• the battery electrode being an electrode of a solid-state or semi-solid battery;
• the electrode including a substrate for carrying the material of the electrode, and an electrode slurry layer coated on the substrate;
• the composite LLZO particle comprising:
• a first LLZO particle serving to guide and disperse paths of lithium ions, and to cause that evenly distributed lithium ion channels are formed inside the electrode;
• a first hydroxide ion layer coated on an outer surface of the first LLZO particle;
• the first hydroxide ion layer and the first LLZO particle forming a second order LLZO composite particle;
• the first hydroxide ion layer being formed by a reaction of tris (tris(hydroxymethyl)aminomethane, (HOCH2)3CNH2) molecules and has a plurality of third OH−ions;
• the tris molecules being added in the manufacturing process of the composite LLZO particle;
• each of the tris molecules having three OH−ions which are a first OH−ion, a second OH−ion and the third OH−ion;
• the first ions and the second OH−ions of the tris molecules being bound to oxidizing functional groups on the first LLZO particle by hydrogen bonding;
• the third OH−ions of the tris molecules extending outward to an outer side of the first LLZO particle to form the first hydroxide ion layer;
• a first dopamine layer coated on an outer side of the second order LLZO composite particle;
• the first dopamine layer and the second order LLZO composite particle forming a hydrophobic LLZO particle;
• the first dopamine layer being formed by a plurality of dopamine molecules copolymerized;
• a polymerization triggered by dehydration being performed between OH−ions of the dopamine molecules of the first dopamine layer and the third OH−ions of the first hydroxide ion layer to cause that the first dopamine layer is connected to the second order LLZO composite particle through the first hydroxide ion layer;
• the dopamine molecules of the dopamine layer being hydrophobic to protect the first LLZO particle and to prevent the first LLZO particle from being dampened;
• an outer hydrophobic layer coated on an outer surface of the hydrophobic LLZO particle;
• the outer hydrophobic layer and the hydrophobic LLZO particle forming the composite LLZO particle;
• the outer hydrophobic layer including a plurality of peripheral composite particles;
• each of the peripheral composite particles being selected from a barium titanate (BaTiO3) composite particle and a zinc oxide (ZnO) composite particle;
• wherein each of the peripheral composite particles includes a peripheral particle;
• when the peripheral composite particle is the barium titanate composite particle, the peripheral particle is a barium titanate particle;
• when the peripheral composite particle is the zinc oxide composite particle, the peripheral particle is a zinc oxide particle;
• a second hydroxide ion layer is coated on an outer side of the peripheral particle;
• and a second dopamine layer is coated on an outer side of the second hydroxide ion layer;
• wherein the second hydroxide ion layer is formed by a reaction of the tris (tris(hydroxymethyl)aminomethane, (HOCH2)3CNH2) molecules and has a plurality of third OH−ions;
• the tris molecules are added in the manufacturing process of the composite LLZO particle;
• each of the tris molecules has three OH−ions which are the first OH−ion, the second OH−ion and the third OH−ion;
• the first ions and second OH−ions of the tris molecules are bound to oxidizing functional groups on a corresponding barium titanate particle or zinc oxide particle by hydrogen bonding;
• the third OH−ions of the tris molecules extend outward to an outer side of the corresponding barium titanate particle or zinc oxide particle to form the second hydroxide ion layer;
• wherein the second dopamine layer is formed by a plurality of dopamine molecules copolymerized;
• a polymerization triggered by dehydration is performed between OH−ions of the dopamine molecules of the second dopamine layer and the third OH−ions of a corresponding second hydroxide ion layer to cause that the second dopamine layer is connected to a corresponding barium titanate particle or zinc oxide particle through the corresponding second hydroxide ion layer;
• and
• wherein the outer hydrophobic layer is coated on the outer surface of the hydrophobic LLZO particle by chain co-polymerization of the dopamine molecules of the first dopamine layer and the dopamine molecules of the second dopamine layer on the outer hydrophobic layer.