Hydrogen storage electrode and nickel hydrogen battery
A nickel-metal hydride battery and electrode technology, applied in battery electrodes, battery pack parts, alkaline battery electrodes, etc., can solve the problems of high resistance of current collector leads and low battery output characteristics, and achieve excellent anti-corrosion effect and efficient discharge. characteristics, the effect of excellent charge-discharge cycle characteristics
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[0131] (Example 1)
[0132] (Surface modification treatment of hydrogen storage alloy powder)
[0133] (Pre-treatment: hydrogen storage)
[0134] Under reduced pressure, 100℃ for AB with an average particle size of 30μm 5 Type rare earths with MmNi 3.55 Co 0.6 Al 0.3 Mn 0.35 The hydrogen storage alloy of the composition was heated for 10 hours, and put into a hydrogen atmosphere with a hydrogen partial pressure of 0.1 MPa and a temperature of 60°C for 15 minutes to store hydrogen.
[0135] (Step 1: Dipping treatment)
[0136] Using a NaOH aqueous solution 11 with a temperature of 100° C. and a concentration of 45% by weight as the treatment solution, 1 kg of the hydrogen storage alloy powder after the hydrogen storage treatment was impregnated. The immersion treatment time was 52 minutes. In order to prevent the hydrogen storage alloy powder from settling during the immersion treatment, the treatment liquid is stirred. Here, the immersion treatment is controlled so that the treatm...
Example Embodiment
[0153] (Example 2)
[0154] A unipolar battery was produced in the same manner as in Example 1, except that in the step of subjecting the hydrogen storage alloy powder to the surface modification treatment (the first step: immersion treatment), the immersion treatment time was set to 1.3 hours, and the discharge capacity was measured. Take this embodiment as embodiment 2.
Example Embodiment
[0155] (Example 3)
[0156] A unipolar battery was produced in the same manner as in Example 1, except that in the step of subjecting the hydrogen storage alloy powder to the surface modification treatment (first step: immersion treatment), the immersion treatment time was set to 1.8 hours, and the discharge capacity was measured. Take this embodiment as embodiment 3.
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