We have investigated the Li3-xMxN (M: Co, Ni, or Cu, x = 0.1-0.6) system as an anode material for lithium rechargeable cells. Li metal/Li3-xMxN cells were prepared and the anode properties evaluated galvanostatically. Li2.6Co0.4N exhibits a high specific capacity of 760 mA h/g in the 0.0-1.4 V range. This value is more than twice the theoretical capacity of C6Li (372 mA h/g). The capacity of the Li3-xCoxN system depends on the amount of lithium ions removed during the first extraction. These systems are expected to increase substantially the energy density of lithium rechargeable cells.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics