Atomic Layer Deposition of Al2O3-Ga2O3 Alloy Coatings for Li[Ni0.5Mn0.3Co0.2]O2 Cathode to Improve Rate Performance in Li-Ion Battery.

Metal oxide coatings can improve the electrochemical stability of cathodes and hence, their cycle-life in rechargeable batteries. However, such coatings often impose an additional electrical and ionic transport resistance to cathode surfaces leading to poor charge-discharge capacity at high C-rates. Here, a mixed oxide (Al2O3)1-x(Ga2O3)x alloy coating, prepared via atomic layer deposition (ALD), on Li[Ni0.

Is bigger really better? Obesity among high school football players, player position, and team success.

Objective: American football is one of the most common high school sports in the United States. We examine obesity among high school football players, and variations based on positions, team division, and team success.

Patients And Methods: We used 2 data sets from the North Carolina High School Athletic Association (n = 2026) and MaxPreps (n = 6417).