Publication number: 20160344024
Abstract: A negative active material for a rechargeable lithium battery includes a lithium titanate compound represented by Chemical Formula 1, where R, a Raman spectrum intensity ratio (I(F2u)/I(F2g)) of an F2u peak in a range of about 200 cm?1 to about 300 cm?1 relative to an F2g peak in a range of about 400 cm?1 to about 550 cm?1 is greater than or equal to about 0.7. Li4+xTi5?yMzO12?n ??Chemical Formula 1 In Chemical Formula 1, ?0.2?x?0.2, ?0.3?y?0.3, 0?z?0.3, ?0.3?n?0.3, and M is selected from Mg, Al, Ca, Sr, Cr, V, Fe, Co, Ni, Zr, Zn, Si, Y, Nb, Ga, Sn, Mo, W, Ba, La, Ce, Ag, Ta, Hf, Ru, Bi, Sb, As, and a combination thereof.
Type:
Application
Filed:
May 9, 2016
Publication date:
November 24, 2016
Inventors:
Soojeong Lee, Young-Kee Kim, Dong-Hyun Shin, Sun-Il Park, Sujin Um