In Situ Neutron Depth Profiling: A Powerful Method to Probe Lithium Transport in Micro-Batteries

In situ neutron depth profiling (NDP) offers the possibility to observe lithium transport inside micro-batteries during battery operation. It is demonstrated that NDP results are consistent with the results of electrochemical measurements, and that the use of an enriched (LiCoO2)-Li-6 cathode offers more insight in transport processes occurring inside all-solid-state thin-film batteries.