Positive-electrode material of metal hydride nickle sealed secondary cell
A technology of secondary battery and positive electrode material, which is applied in the direction of alkaline battery electrode, secondary battery, airtight battery, etc. problems such as service life and internal resistance, to achieve the effect of extending cycle life, excellent high-rate discharge performance, and reducing ohmic internal resistance
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[0011] The positive electrode material composition of the metal hydride nickel sealed alkaline secondary battery contains (by weight): 0.8% multi-walled carbon nanotubes (CNTs), 6.4% CoO, 0.7% Co, remaining β-Ni(OH) 2 . Mix multi-walled carbon nanotubes and spherical β-Ni(OH) according to the material composition 2 , CoO and Co powders are mixed in proportion, and after ultrasonic vibration and mechanical stirring for 60 minutes, the multi-walled carbon nanotubes, CoO and Co powders are in β-Ni(OH) 2 Evenly dispersed in the powder. The uniformly mixed powder is coated on the current collector foam nickel after adding a small amount of CMC and PTFE binder and water, and then is dried and pressed to prepare positive electrodes of different sizes.
[0012] Cut the foamed nickel positive electrode sheet into shape, the size is: 86×40×0.66mm 3 ; The negative electrode is AB added with oxygen catalyst formed by dry pressing on the copper mesh 5 Type hydrogen storage a...
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