Thin film lithium battery is a very important micro energy device
which has showed tremendous potential application.In order to further improve the performance of the thin film battery
it requires better assembling method.Layer-by-layer (LbL ) technique provides a simple
safe and affordable route in assembling thin film electrolytes and electrodes.The technique is very important to construct nanoscale thin film which has showed unique property compared with bulk film.Here
we review the design of LbL films for electrolytes and electrodes and recent progress.Furthermore
material choice is significant to affect the properties of LBL battery.Hence
we review the recent progress of LBL film battery incorporating carbon nanotubes(CNT) due to its excellent electronic property.