Negative electrode material for lithium ion secondary battery and method for producing the same
A technology for secondary batteries and negative electrode materials, applied in electrode manufacturing, secondary batteries, battery electrodes, etc., can solve problems such as manufacturing difficulties, and achieve the effects of less anisotropy, high filling density, and high capacity
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Embodiment 1
[0143] Add 7 parts by mass (solid content 5 mass % as phenolic resin) general-purpose phenolic resin (solid content 70 mass %, manufactured by Gunei Chemical Industry Co., Ltd., trade name レゾチップ ). Moreover, 150 mass parts of methanol was added, and the slurry (40 mass % of slurry concentration) was obtained. This slurry was granulated using a spray dryer equipped with an atomizer nozzle to obtain secondary particles having an average particle diameter of 45 μm.
[0144] The secondary particles were press-molded at 19 kN using a hand press to obtain a flaky secondary particle molded body with a diameter of 12 mm and a thickness of 5 mm. The molded body was pulverized with a pin mill. The pulverized particles were classified with a mesh size of 53 μm using a vibrating sieve. This operation was repeated three times to obtain 1 kg of pulverized particles with a sieve yield of 92% and an average particle diameter of 32 μm.
[0145] Using a flow type reaction furnace, the pulver...
Embodiment 2、3
[0168] Except having changed to the manufacturing conditions shown in Table 1, the same operation as Example 1 was performed. Tables 2-4 summarize the results.
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Abstract
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