Under the most Li-poor (oxidizing) condition (Figure ), E Fermi,eq is 2.59 eV. The dominant defects are V 0 Li , Li +1 i , and V -1 Li , with E D,q of 1.25 eV, 1.34 eV, and 1.47 eV, respectively. The total concentration of the dominant defects mediating Li-ion di↵usion is 3.77⇥10 2 cm 3 . The net free charge carrier concentration is still ⇡ 0.0 cm 3 , similar to the Li-rich condition. Even if the "frozen in" temperature for defects is raised to 800 K, the net carrier concentration would only increase to the order of