Si-based alloy negative electrode material for electricity storage devices and electrode using same
A negative electrode material and accumulator technology, applied in the direction of hybrid capacitor electrodes, battery electrodes, capacitors, etc., to achieve the effect of preventing collapse, obvious effect, and excellent charge-discharge cycle characteristics
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[0061] Hereinafter, the present invention will be specifically described by way of examples.
[0062] The negative electrode material powder for lithium ion secondary batteries of the composition shown in Tables 1-2 was produced by the single roll rapid cooling method, gas atomization method, etc. mentioned below. For the liquid quenching method, which is a single-roll quenching method, the raw material of a predetermined composition is put into a quartz tube with fine holes at the bottom, high-frequency melted in an Ar atmosphere to form a melt, and the melt is discharged to the center of a rotating copper roll. After the surface, a quenched belt in which the crystallite size of the Si phase was miniaturized was produced by utilizing the quenching effect by the copper roll. Then, the produced quenched belt was sealed in an Ar atmosphere together with zirconia balls, SUS304 balls, and SUJ2 balls in a tank-shaped container made of zirconia, SUS304, or SUJ2, and processed into p...
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