TY - JOUR
T1 - Deep discharge and elevated temperature cycling of LiMn 1.485Ni0.45Cr0.05O4 spinel cathodes
T2 - Solid-state cell studies
AU - West, William C.
AU - Ishii, Yosuke
AU - Kaneko, Masakazu
AU - Motoyama, Munekazu
AU - Iriyama, Yasutoshi
PY - 2014
Y1 - 2014
N2 - LiNi0.5-xMn1.5MexO4 (Me = Cr, Co, Fe, Al, Ga) (LNM) provides specific capacity of ca. 130 mAh/g between 5.0 V-3.5 V though discharge to 2 V can yield 250 mAh/g. Others have shown in liquid electrolyte cells that discharge to 2 V results in steep capacity fade associated with phase transitions below 3.5 V. We show that in thin-film cells, LNM can be cycled at 25°C and 100°C between 5 V-1.9 V with little capacity fade over 100-200 cycles. These findings suggest that rapid capacity fade of LNM at deep discharge for liquid electrolyte cells is not due to an inherent crystallographic limitation of LNM.
AB - LiNi0.5-xMn1.5MexO4 (Me = Cr, Co, Fe, Al, Ga) (LNM) provides specific capacity of ca. 130 mAh/g between 5.0 V-3.5 V though discharge to 2 V can yield 250 mAh/g. Others have shown in liquid electrolyte cells that discharge to 2 V results in steep capacity fade associated with phase transitions below 3.5 V. We show that in thin-film cells, LNM can be cycled at 25°C and 100°C between 5 V-1.9 V with little capacity fade over 100-200 cycles. These findings suggest that rapid capacity fade of LNM at deep discharge for liquid electrolyte cells is not due to an inherent crystallographic limitation of LNM.
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U2 - 10.1149/2.0051410eel
DO - 10.1149/2.0051410eel
M3 - Article
AN - SCOPUS:84906888775
SN - 2162-8726
VL - 3
SP - A99-A101
JO - ECS Electrochemistry Letters
JF - ECS Electrochemistry Letters
IS - 10
ER -