Dynamic Behavior of Li in Solid-State Li-Ion Batteries Studied using MeV Ion Beam Analysis Techniques

In this review, various studies on the Li depth profiles of metal/electrolyte/metal capacitors and batteries Au/LCO/LATP/Pt, LCO/LiPON/Si, LMO/LiPON/NbO with different metal electrodes at both sides (by bias; LCO =LiCoO2, LATP =Li3.1Al0.86Ti1.14Ge1.27P1.73O12, LMO =LiMn2O4, NbO = Nb2O5) using in-situ reflection ERD (ERD) technique 9MeV O+4 ion beam transmission (TERD) 5MeV He+2 beam, respectively, are described. For capacitors, transport fraction Li-ion in electrolyte is less than unity. The atoms diffuse direction opposite to ion. It has been shown that rechargeable. On other hand, it observed an anomalous over-charging takes place when over-biased (Si/LiPON/LCO LMO/LiPON/NbO), strong reactions take under these conditions. anomaly explained terms imbalance capacities anode cathode, which can be attributed sizeable amounts hydrogen present as impurity during fabrication battery. This because potentially reduce capacity cathode. discussed ions (less unity) difference work functions sides. Finally, noted removal improve safety, efficiency, lifetime. These achieved by reducing reaction electrodes. recoil-scatter method TERD measure profile absence background yields.