16-10-2014 дата публикации
Номер: US20140306152A1
Принадлежит:
There is provided a cathode active material for a lithium ion battery having good battery properties. The cathode active material for a lithium ion battery is represented by a composition formula: LiNiMO wherein M is one or more selected from Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Zn, Ga, Ge, Al, Bi, Sn, Mg, Ca, B, and Zr; 0.9≦x≦1.2; 00.1, and has a moisture content measured by Karl Fischer titration at 300° C. of 1100 ppm or lower. 1. A cathode active material for a lithium ion battery , represented by a composition formula:{'br': None, 'sub': x', '1−y', 'y', '2+α, 'LiNiMO'}wherein M is one or more selected from Sc, Ti, V, Cr, Mn, Fe, Co, Cu, Zn, Ga, Ge, Al, Bi, Sn, Mg, Ca, B, and Zr; 0.9≦x≦1.2; 00.1,wherein a moisture content measured by Karl Fischer titration at 300° C. is 1,100 ppm or lower and,a difference between a moisture content measured by Karl Fischer titration at 300° C. and a moisture content measured by Karl Fischer titration at 150° C. is 100 to 500 ppm.2. The cathode active material for a lithium ion battery according to claim 1 , wherein the moisture content measured by Karl Fischer titration at 300° C. is 800 ppm or lower.3. The cathode active material for a lithium ion battery according to claim 1 , wherein the M is one or more selected from Mn and Co.4. The cathode active material for a lithium ion battery according to claim 1 , wherein α>0.15 in the composition formula.5. The cathode active material for a lithium ion battery according to claim 4 , wherein α>0.20 in the composition formula.6. The cathode active material for a lithium ion battery according to claim 1 , wherein a moisture content measured by Karl Fischer titration at 150° C. is 300 ppm or lower.7. The cathode active material for a lithium ion battery according to claim 6 , wherein the moisture content measured by Karl Fischer titration at 150° C. is 200 ppm or lower.8. (canceled)9. The cathode active material for a lithium ion battery according to claim 1 , ...
Подробнее