A5102156130- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- Advanced Battery Technologies Research
- Supercapacitor Materials and Fabrication
- Conducting polymers and applications
- Extraction and Separation Processes
- ZnO doping and properties
- Semiconductor materials and devices
Virginia Tech
2022-2025
Polymer electrolytes have received tremendous interest in the development of solid-state batteries, but often fall short one or more key properties required for practical applications. Herein, a rigid gel polymer electrolyte prepared by immobilizing liquid mixture lithium salt and poly(ethylene glycol) dimethyl ether with only 8 wt% poly(2,2'-disulfonyl-4,4'-benzidine terephthalamide) (PBDT) is reported. The high charge density double helical structure PBDT lead to formation nanofibrillar...
Ni-rich layered oxides as high-capacity battery cathodes suffer from degradation at high voltages. We utilize a dry surface modification method, mechanofusion (MF), to achieve enhanced stability. The simplicity, yield, and flexibility make it cost-effective highly attractive for processing the industrial scale. underlying mechanisms responsible performance improvement are unveiled by systematic study combining multiple probes, e.g., 3D nano-tomography, spectroscopic imaging, in situ...
Designing the solid–electrolyte interphase (SEI) is critical for stable, fast-charging, low-temperature Li-ion batteries. Fostering a “fluorinated interphase,” SEI enriched with LiF, has become popular design strategy. Although LiF possesses low conductivity, many studies have reported favorable battery performance fluorinated SEIs. Such contradiction suggests that optimizing must extend beyond chemical composition to consider spatial distributions of different species. In this work, we...
Polymer electrolytes hold great promise for safe and high-energy solid-state batteries. Multiphase polymer electrolytes, consisting of mobile rigid phases, exhibit fast ion conduction desired mechanical properties. However, fundamental challenges exist in understanding regulating intricate chemomechanical interactions at the electrode-electrolyte interface, especially when using a high-voltage layered cathode. Here, we report that depletion conductive phase interface contributes to battery...
Polymer electrolytes hold great promise for safe and high-energy solid-state batteries. Multiphase polymer electrolytes, consisting of mobile rigid phases, exhibit fast ion conduction desired mechanical properties. However, fundamental challenges exist in understanding regulating intricate chemomechanical interactions at the electrode-electrolyte interface, especially when using a high-voltage layered cathode. Here, we report that depletion conductive phase interface contributes to battery...