NEGATIVE ELECTRODE MATERIAL FOR LITHIUM SECONDARY BATTERY
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United States of America Patent
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Issued Date -
May 29, 2014
app pub date -
Oct 11, 2011
filing date -
Oct 12, 2010
priority date (Note) -
Abandoned
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Abstract
A lithium secondary battery negative electrode material 1 is in the form of a foil 2 or a plate, and includes a core layer 3 having electrical conductivity, and a porous layer 4 which is formed on at least one surface of the core layer 3, and which contains Al in an amount of 90 mass % or more. The porous layer 4 has a porosity of 30 to 70 vol. %. Pores 5 formed in the porous layer 4 have a pore size of 0.1 to 15 μm. The lithium secondary battery negative electrode material 1 realizes prolongation of the cycle life of a lithium secondary battery.
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