摘要:
A method for quality examination of cathode materials for lithium-ion batteries comprising steps of adding cathode material powders to a solution of a surfactant to form a cathode material mixture solution; transferring the cathode material mixture solution to ball milling; filtering the cathode material mixture through a 200-mesh sieve, measuring the weight of a first residue that does not pass through the sieve, and determining whether the weight of the first residue exceed a first threshold value; filtering the cathode material mixture through a 420-mesh sieve, measuring the weight of a second residue that does not pass through the sieve, and determining whether the weight of the second residue exceed a second threshold value; and analyzing the second residual and determining whether multiple metal elements exceed multiple threshold values.
摘要:
The present invention provides a preparation method of a battery composite material, wherein a precursor with the chemical formula FePO 4 is formed by introducing air or oxygen during calcination. The precursor is then reacted with a first reactant containing lithium atoms and a carbon source to form a battery composite material with the chemical formula LiFePO 4 .
摘要:
A method of manufacturing a positive electrode material has the steps of synthesizing an iron metal in a phosphoric acid solution to form an iron phosphate dispersion solution; adding a vanadium pentoxide (V 2 O 5 ), a non-ionic surfactant and a carbon source to the iron phosphate dispersion solution; and adding a lithium salt to the iron phosphate dispersion solution and then grinding and dispersing it to produce a positive electrode material. By regulating the timing of the addition of vanadium pentoxide (V 2 O 5 ), the present invention enables the battery made of the positive electrode material to have the advantage of higher battery performance.
摘要:
A particle structure of cathode material and a preparation method thereof is provided. Firstly, a precursor for forming a core is provided. The precursor includes at least nickel, cobalt and manganese. Secondly, a metal salt and a lithium ion compound are provided. The metal salt includes at least potassium, aluminum and sulfur. After that, the metal salt, the lithium ion compound and the precursor are mixed, and a mixture is formed. Finally, the mixture is subjected to a heat treatment step, and a cathode material particle structure is formed to include the core, a first coating layer coated on the core and a second coating layer coated on the first coating layer. The core includes potassium, aluminum and a Li-M-O based material. The first coating layer includes potassium and aluminum, and a potassium content of the first coating layer is higher than a potassium content of the core. The second coating layer includes sulfur.
摘要:
A cathode material with double carbon coatings is provided. The cathode material includes a lithium metal phosphate matrix, a first carbon coating, and a second carbon coating. The first carbon coating is coated on the lithium metal phosphate matrix. The second carbon coating is coated on the first carbon coating. The carbon source of the first carbon coating is a carbohydrate or a water-soluble macromolecule compound having relatively smaller molecular weight. The carbon source of the second carbon coating is a macromolecule compound having relatively higher molecular weight.
摘要:
A preparation method of a lithium nickel manganese oxide cathode material of a battery includes steps of providing a nickel compound, a manganese compound, a first quantity of lithium compound, a second quantity of lithium compound and a compound containing metallic ions, mixing the nickel compound, the first quantity of lithium compound, dispersant and deionized water to produce first product solution, adding the manganese compound into the first product solution and mixing to produce second product solution, performing a first grinding to produce first precursor solution, mixing the second quantity of lithium compound, the compound containing the metallic ions and the first precursor solution, then performing a second grinding to produce second precursor solution, and calcining the second precursor solution to produce the lithium nickel manganese oxide cathode material of the battery, the formula of which is written by Li 1.0+x Ni 0.5 Mn 1.5 M y O 4 . Therefore, the activation energy of reaction can be reduced.
摘要翻译:一种电池用锂镍锰氧化物正极材料的制备方法,包括以下步骤:提供镍化合物,锰化合物,第一量的锂化合物,第二量的锂化合物和含有金属离子的化合物,将所述镍化合物 第一批量的锂化合物,分散剂和去离子水以生产第一产品溶液,将锰化合物加入到第一产品溶液中并混合以产生第二产品溶液,进行第一研磨以产生第一前体溶液,混合第二量的 锂化合物,含金属离子的化合物和第一前体溶液,然后进行第二研磨以制备第二前体溶液,并煅烧第二前体溶液以制备电池的锂镍锰氧化物阴极材料,其配方为 由Li 1.0 + x Ni 0.5 Mn 1.5 M y O 4书写。 因此,可以降低反应的活化能。
摘要:
A preparation method of a battery composite material includes steps of providing phosphoric acid, iron powder, a carbon source and a first reactant, processing a reaction of the phosphoric acid and the iron powder to produce a first product, calcining the first product to produce a precursor, among which the formula of the precursor is written by Fe 7 (PO 4 ) 6 , and processing a reaction of the precursor, the carbon source and the first reactant to get a reaction mixture and calcining the reaction mixture to produce the battery composite material. As a result, the present invention achieves the advantages of reducing grind time of fabricating processes, so that the prime cost, the time cost, and the difficulty of fabricating are reduced.
摘要:
An electrolyte-solution composition (10) and a secondary battery (1) using the same. The electrolyte-solution composition (10) is configured in contact with an aluminous surface (21) of a cathode (20). The electrolyte-solution composition (10) includes an electrolyte solution and a hydroxyquinoline compound. With the hydroxyquinoline compound included in the electrolyte-solution composition (10), oxidation and corrosion occurred on the aluminous surface (21), which are caused by the electrolyte-solution composition (10), is reduced. Accordingly, the capacity of the secondary battery (1) is improved, and the occurrence of self-discharge phenomenon is avoided.
摘要:
A cathode material with oxygen vacancy is provided. The cathode material includes a lithium metal phosphate compound having a general formula LiMPO 4-Z , wherein M represents at least one of a first-row transition metal, and 0.001 ‰¤ z ‰¤ 0.05.