Chemistry: Cathode

LMNO vs. LMO

In LMNO compared to LMO, Mn is partially replaced by Ni Incorporating Ni into the system raises the redox voltage, resulting in increased overall energy density LMNO offers a higher energy density, typically around 180200 Wh/kg, whereas LMO possess a moderate energy density 140160 Wh/kg LMNO has a higher cutoff voltage of 4.7 V, whereas LMO has a cutoff voltage of 4.2 V LMNO has improved low-temperature performance compared to LMO

LMO

LMNO

Ni/Mn ratio in LMO (cell voltage, practical capacity, energy density) LMO 0% Ni 4.0 V

30% Ni 4.3V

50% Ni 4.7V

70% Ni 4.8V

80% Ni 4.9V

LNO 100% Ni) 4.4V

120.0 mAh/g 180.0 Wh/kg

170.0 mAh/g 230.0 Wh/kg

200.0 mAh/g 300.0 Wh/kg

220.0 mAh/g 330.0 Wh/kg

230.0 mAh/g 360.0 Wh/kg

250.0 mAh/g 380.0 Wh/kg

Source: K. Mukai et al. RSC Adv., 2013, 3, 1163411639

Extracted from the PDF; charts and images may read imperfectly.