Preparation method of layered quaternary positive electrode material of lithium ion battery
A technology for lithium-ion batteries and cathode materials, applied in battery electrodes, electrical components, circuits, etc., can solve the problems of general discharge capacity of quaternary materials, large percentage of irreversible capacity, affecting the morphology and capacity of materials, and achieve the first irreversible capacity. Low percentage, low percentage of irreversible capacity, effect of reducing time cost and energy cost
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[0028] Example 1 Preparation of a layered quaternary cathode material for lithium-ion batteries
[0029] According to Figure 1 The process flow diagram uses soluble metal salts as raw materials to prepare a four-way cathode material LiNi with a layered structure by co-precipitation method 0.6 Co 0.08 Mn 0.24 Fe 0.08 O 2 , the method includes the following steps:
[0030] (1) Configuration solution:
[0031] First of all, the molar ratio of the metal elements of Ni, Co, Mn, and Fe is 60:8:24:8 to accurately weigh the water-soluble nickel salt nickel tetrahydrate nickel acetate (C 4 H 14 NiO 8 ), water-soluble drill salt cobalt tetrahydrate (C 4 H 14 CoO 8 ), water-soluble manganese salt manganese tetrahydrate manganese acetate (C 4 H 14 MnO 8 ), water-soluble iron salt ferrous sulfate (FeSO) heptaceous ferrous acid (FeSO 4 ·7H 2 O), and configured with deionized water into a mixed metal solution A with a concentration of 0.6 M;
[0032] Then, with oxalic acid as the precipitant, o...
Example Embodiment
[0037] Example 2 Preparation of layered quaternary cathode material for lithium-ion batteries
[0038] According to Figure 1 The process flow diagram uses soluble metal salts as raw materials to prepare a four-way cathode material LiNi with a layered structure by co-precipitation method 0.6 Co 0.08 Mn 0.24 Fe 0.08 O 2 , the method includes the following steps:
[0039] (1) Configuration solution:
[0040] First of all, the molar ratio of the metal elements of Ni, Co, Mn, and Fe is 60:8:24:8 to accurately weigh the water-soluble nickel salt nickel tetrahydrate nickel acetate (C 4 H 14 NiO 8 ), water-soluble drill salt cobalt tetrahydrate (C 4 H 14 CoO 8 ), water-soluble manganese salt manganese tetrahydrate manganese acetate (C 4 H 14 MnO 8 ), water-soluble iron salt ferrous sulfate (FeSO) heptaceous ferrous acid (FeSO 4 ·7H 2 O), and configured with deionized water into a mixed metal solution A with a concentration of 0.4 M;
[0041] Then, with oxalic acid as the precipitant, oxa...
Example Embodiment
[0046] Example 3 Preparation of a layered quaternary cathode material for lithium-ion batteries
[0047] According to Figure 1The process flow diagram uses soluble metal salts as raw materials to prepare a four-way cathode material LiNi with a layered structure by co-precipitation method 0.6 Co 0.08 Mn 0.24 Fe 0.08 O 2 , the method includes the following steps:
[0048] (1) Configuration solution:
[0049] First of all, the molar ratio of the metal elements of Ni, Co, Mn, and Fe is 60:8:24:8 to accurately weigh the water-soluble nickel salt nickel tetrahydrate nickel acetate (C 4 H 14 NiO 8 ), water-soluble drill salt cobalt tetrahydrate (C 4 H 14 CoO 8 ), water-soluble manganese salt manganese tetrahydrate manganese acetate (C 4 H 14 MnO 8 ), water-soluble iron salt ferrous sulfate (FeSO) heptaceous ferrous acid (FeSO 4 ·7H 2 O), and configured with deionized water into a mixed metal solution A with a concentration of 0.7 M;
[0050] Then, with oxalic acid as the precipitant, o...
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