AoLNS Doctoral Talk – Molecular Innovation and Advanced Materials Theme Week2

Title 1

Metal oxides-based materials tuning by Schottky barrier height in gas sensor in microfluidic channel for lithium-ion battery (LIB) thermal runaway

Abstract

Current thermal runaway monitoring in lithium-ion batteries (LIBs) relies on physical parameters, such as temperature and voltage, which cannot inform the battery management system (BMS) effectively. This research aims to develop an innovative gas sensor with high sensitivity and selectivity for specific electrolyte gases, ethylene carbonate and propylene carbonate, during thermal runaway. The gas sensor is fabricated using lithium-containing transition metal oxide (LiMn₂O₄) as the core sensing material. It is integrated into microfluidic channel for a low detection limit. Furthermore, Au doping optimizes the Schottky barrier to facilitate electron transfer.

Title 2

Study on the dynamic mechanical behavior and its deformation mechanism of titanium alloy

Abstract

Ti80 are vital structural materials in aerospace and defense, yet they suffer catastrophic failure via adiabatic shear bands (ASBs) under ultrahigh strain rates 10³s^-1). ASB development involves complex, coupled mechanisms: work hardening, thermal softening, dynamic recrystallization, and phase transformation, whose temporal activation sequence remains unresolved. We try to clarify the sequential interactions of competing deformation mechanisms during shear localization and improve impact-resistant of Ti80.