摘要:
A hybrid power supply system includes a number of power modules electrically connected with each other in series. Each power module includes a fuel cell unit and a lithium-ion battery unit. Each fuel cell unit includes at least two fuel cell monomers electrically connected with each other in series. Each lithium-ion battery unit includes one or more lithium ion battery monomers electrically connected with each other in parallel. Each fuel cell unit is electrically connected with each lithium-ion battery unit in parallel to directly charge the lithium-ion battery unit.
摘要:
A method for making current collector is described. In the method, a substrate, a graphene film, and a plastic support film are provided. The substrate has a surface. The graphene film is disposed on the surface of the substrate. The graphene film disposed on the surface of the substrate and the plastic support film are laminated to form a substrate-graphene-plastic support film composite structure. The substrate is removed.
摘要:
The invention relates to a current collector. The current collector include a metal foil and a graphene film covered on at least one surface of the metal foil. The invention also relates to an electrode of an electrochemical battery and the electrochemical battery using the current collector.
摘要:
A method for making sulfur-graphene composite material is disclosed. In the method, a dispersed solution including a solvent and a plurality of graphene sheets dispersed in the solvent is provided. A sulfur-source chemical compound is dissolved into the dispersed solution to form a mixture. A reactant, according to the sulfur-source chemical compound, is introduced to the mixture. Elemental sulfur is produced on a surface of the plurality of graphene sheets due to a redox reaction between the sulfur-source chemical compound and the reactant, to achieve the sulfur-graphene composite material. The sulfur-graphene composite material is separated from the solvent.
摘要:
In the method for making graphene, an electrolyte solution is formed by dissolving an electrolyte lithium salt in an organic solvent. Lithium ions are separated out from the electrolyte lithium salt in the electrolyte solution. Metal lithium and graphite are disposed in the electrolyte solution, and the metal lithium and the graphite are in contact with each other. In the electrolyte solution, lithium ions and organic solvent molecules jointly insert between adjacent layers of the graphite to form a graphite intercalation compound. The graphene is peeled off from the graphite intercalation compound.
摘要:
A cathode active material of a lithium ion battery includes a number of LiNi0.5Mn1.5O4 particles and an AlF3 layer coated on a surface of the LiNi0.5Mn1.5O4 particles. A method for making the cathode active material is provided. In the method, a number of LiNi0.5Mn1.5O4 particles are provided. The LiNi0.5Mn1.5O4 particles are added to a trivalent aluminum source solution to form a solid-liquid mixture. A fluorine source solution is put into the solid-liquid mixture to react and form an AlF3 layer coated on the surface of the LiNi0.5Mn1.5O4 particles. The coated LiNi0.5Mn1.5O4 particles are heat treated to form the cathode active material. A lithium ion battery including the cathode active material is also provided.
摘要翻译:锂离子电池的正极活性物质包括多个LiNi 0.5 Mn 1.5 O 4颗粒和涂覆在LiNi0.5Mn1.5O4颗粒表面上的AlF 3层。 提供了制造阴极活性材料的方法。 在该方法中,提供了许多LiNi 0.5 Mn 1.5 O 4颗粒。 将LiNi0.5Mn1.5O4颗粒加入到三价铝源溶液中以形成固液混合物。 将氟源溶液放入固液混合物中反应并形成涂覆在LiNi0.5Mn1.5O4颗粒表面上的AlF3层。 涂覆的LiNi0.5Mn1.5O4颗粒被热处理以形成阴极活性材料。 还提供了包括阴极活性材料的锂离子电池。
摘要:
A cathode composite material includes a cathode active material particle having a surface and a continuous aluminum phosphate layer coated on the surface of the cathode active material particle. A material of the cathode active material particle is layered type lithium nickel manganese oxide. The present disclosure also relates to a lithium ion battery and a method for making the cathode composite material.
摘要:
A method for making a current collector of an electrochemical battery is disclosed. In the method, a current collecting metal substrate and a solid graphite source are provided. A graphite/graphene layer is formed on at least one surface of the current collecting metal substrate, by rubbing the at least one surface of the current collecting metal substrate with the solid graphite source. A method for making an electrode of an electrochemical battery is also disclosed.
摘要:
A cathode composite material includes a cathode active material particle having a surface, and a continuous aluminum phosphate layer coated on the surface of the cathode active material particle. A material of the cathode active material particle is spinel type lithium manganese oxide. The present disclosure also relates to a lithium ion battery and a method for making the cathode composite material.
摘要:
A lithium titanate composite material includes a lithium titanate particle and a double layered structure coated on a surface of the lithium titanate particle. The double layered structure includes a carbon layer directly disposed on the surface of the lithium titanate particle, and an AlPO4 layer disposed on an outer surface of the carbon layer. The lithium titanate composite material, as an anode active material, can be applied to a lithium ion battery to increase its electrochemical stability.