Metal slope dope anode material of a lithium ion battery

Japanese Patent JP6034413

B2

PROBLEM TO BE SOLVED: To provide a metal gradient dope positive electrode material for a lithium ion battery.SOLUTION: A metal gradient dope positive electrode material for a lithium ion battery is an active unit of positive electrode material powder which contains a hexagonal crystal positive electrode main body and modified metal, and comprises, as main component, any type oxide of single metal of nickel or cobalt, two kinds of metal of nickel and cobalt, nickel and magnesium or cobalt and magnesium, or three kinds of metal of nickel, cobalt and magnesium. The modified metal is an active metal element different from nickel, cobalt and manganese. Particularly, the modified metal relatively concentrates on the surface of the positive electrode material powder, and gradually decreases to a core, whereby the modified metal forms a continuous concentration gradient dope distribution and has no boundary and no divided layer in the material powder. The modified metal has a relatively high concentration on the surface of the positive electrode material powder, the reactivity of the surface of the positive material to electrolyte liquid is lowered, the stability and safety of a lithium ion battery are enhanced, the material amount of the modified metal is small and the energy density and the use-life can be increased.SELECTED DRAWING: Figure 1

Liu Shihuang
Ken Ken
Huang Shinda
Hayashi Zhong Min

JP2015015556A

November 30, 2016

January 29, 2015

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Suin University of Education

H01M4/525; H01M4/505

JP2010170741A
JP2007018985A
JP2010211925A
JP2003257434A
JP2011028976A
JP2011129498A
JP2014220261A
JP2001196063A
JP2004006277A

WO2011043296A1
WO2013145913A1

Aiwa Patent Business Corporation

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