Positive-electrode materials: methods for their preparation and use in lithium secondary batteries
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United States of America Patent
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Feb 21, 2017
Grant Date -
Feb 5, 2015
app pub date -
Oct 4, 2012
filing date -
Oct 4, 2011
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Abstract
A positive-electrode material for a lithium secondary battery which includes a lithium oxide compound or a complex oxide as reactive substance. The material also includes at least one type of carbon material, and optionally a binder. A first type of carbon material is provided as a coating on the reactive substance particles surface. A second type of carbon material is carbon black. And a third type of carbon material is a fibrous carbon material a mixture of at least two types of fibrous carbon material different in fiber diameter and/or fiber length. Also, a method for preparing the material as well as lithium secondary batteries including the material.
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