| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide mixture slurry containing a positive electrode active material mainly composed of a lithium-containing complex oxide containing Ni to obtain a lithium ion secondary battery of high capacity, and having stable viscosity for a long time. <P>SOLUTION: The mixture slurry contains a positive electrode active material containing a lithium-containing complex oxide represented by the formula: Li<SB POS="POST">x</SB>Ni<SB POS="POST">y</SB>M<SB POS="POST">(1-y)</SB>O<SB POS="POST">2</SB>, where 0.9≤x≤1.1, 0.45≤y≤1.0, and M represents at least one kind of metal selected from Al, Mn, Co, Cr, Mg, Fe, Zr, and Ti; a conductive assistant composed of a carbonaceous material; a binder mainly composed of polyvinylidene fluoride; and a solvent composed of N-methyl-2-pyrrolidone having a water content of 100 ppm or smaller measured by Karl-Fischer method. <P>COPYRIGHT: (C)2012,JPO&INPIT |
