Development of high energy density Li-ion batteries based on LiNi1−x−yCoxAlyO2

Electrochemical characterisation of LiNi1−x−yCoxAlyO2 cathode material was conducted and a high reversible capacity of 184 mAh g−1 was obtained with good capacity retention. Evaluation of LiNi1−x−yCoxAlyO2 performance with a graphitic carbon anode was undertaken in several alternative high energy density Li-ion cell configurations. These included a D-size (33,600) cell design, a flat, “soft-packaged” 10 Ah cell design and a high capacity 75 Ah metal case cell design. Energy densities of 160, 150 and 130 W h kg−1 were achieved, respectively, for these cell designs. Further optimisation of these designs is envisaged to lead to projected energy densities, respectively, of 175, 180 and 150 W h kg−1.