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Ni–Cd pocket plate single cells have been float-charged at 1.40 and 1.42V at room temperature and 40°C for a time period of 2–3 years. Subsequent ex situ X-ray diffraction measurements were performed on the charged positive active Ni electrode material. The appearance of the diffraction pattern of one of the charged electrode materials (conventionally named nickel oxy-hydroxide-β-NiOOH) shows resemblance...
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