NICKEL-ZINC RECHARGEABLE PENCIL BATTERY
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United States of America Patent
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Issued Date -
Jul 4, 2013
app pub date -
Jan 29, 2013
filing date -
Oct 13, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A rechargeable pencil battery has a hollow cylindrical positive electrode including nickel hydroxide; a gelled negative electrode comprising at least one of zinc and a zinc compound; a separator interposed between the hollow cylindrical positive electrode and the gelled negative electrode; and a negative electrode current collector inserted into the gelled negative electrode. Rechargeable batteries of the invention are capable of between about 50 and 1000 cycles from a fully charge state to a fully discharged state at a discharge rates of about 0.5 C or greater, in some embodiments about 1 C or greater. Batteries of the invention have a ratio of length to diameter of between about 1.5:1 and about 20:1, and therefore can be longer than typical commercially available batteries but also include batteries of commercial sizes e.g. AAAA, AAA, AA, C, D, sub-C and the like.
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