Publications Details

In Situ Investigations of Li-MoS₂ with Planar Batteries

Wan, Jiayu; Bao, Wenzhong; Liu, Yang; Dai, Jiaqi; Shen, Fei; Zhou, Lihui; Cai, Xinghan; Urban, Daniel; Li, Yuanyuan; Jungjohann, Katherine L.; Fuhrer, Michael S.; Hu, Liangbing

For this study, a planar microbattery that enables various in situ measurements of lithiation of 2D materials on the individual-flake scale is developed. A large conductivity increase of thick MoS₂ crystallite lithiation due to the formation of a percolative Mo nanoparticle network embedded in a Li₂S matrix is observed. The nanoscale study leads to the development of a novel charging strategy for batteries that largely improves the capacity and cycling performance confirmed in bulk MoS₂/Li coin cells.