The nickel -lithium battery was developed in 2009 at the Japanese National Institute of Advanced Industrial Science and Technology ( AIST ). This battery has more than 900 Wh / kg, approximately 3.5 times higher energy density than the previously best conventional lithium - ion batteries.
Structure and properties
The nickel -lithium battery combines the best qualities of nickel -metal hydride batteries and lithium - ion batteries and was therefore for a long time the subject of intensive research. The success were hitherto militated against the different and incompatible requirements of electrolytes. For a lithium anhydrous organic electrolyte is needed because lithium otherwise react under intense heat release with water. Nickel or Ni (OH) 2, however, requires an aqueous electrolyte. With a newly developed, as LISICON designated glass-ceramic membrane, it was possible to provide the suitable electrolyte for each electrode, without mixing the electrolyte.
For a prototype, the cell voltage was 3.47 volts and the storage capacity was 264 Ah / kg. Therefore, the energy density was 916 Wh / kg.