Educational background：

Degree：Master

Status：Finish school

Thesis title：Preparation of Mn doped LiPON electrolyte and properties of solid-state thin film batteries

Destination after graduation：Huawei Technologies Co. LTD

Research direction：Solid-state thin film battery

Introduce：Mainly engaged in the research of key materials of solid-state thin-film batteries, LiPON solid-state electrolyte films were prepared based on RF magnetron sputtering technology. Aiming at the bottleneck problem of low ionic conductivity of LiPON at room temperature, Mn ion doping modification was carried out on the basis of the original LiPON films to improve ionic conductivity and electrochemical stability window. After doping with polyvalent manganese ions, the formation of Mn−N bonds enhanced the cross-linking structure of the network and provided more channels for the rapid migration of Li+. The ionic conductivity of LiPON films reached 5.00×10-6 S/cm, the decomposition voltage was above 5 V, and the ionic migration number reached 0.999. After Mn ion incorporation, the intrinsic work function of LiPON is increased, and the contact potential difference (VCPD) between LiPON and LiCoO2 is reduced, which is conducive to improving the electrochemical stability of the contact interface. LiCoO2/ Lipon-Mn /Li solid thin film lithium battery (TFLB) was prepared by using Mn-doped LiPON electrolyte layer, which has high cycle and rate performance. Sufficient research work has verified the feasibility of applying MN-doped LiPON electrolyte to batteries, and it is expected that Lipon-Mn electrolyte thin film samples can be used to assemble and output high-performance solid-state thin film batteries.

Enrollment date：2020-09-01

Graduation date：2023-06-25