A5083152146- Advancements in Battery Materials
- Advanced Battery Technologies Research
- Advanced Battery Materials and Technologies
- Extraction and Separation Processes
- Conducting polymers and applications
- Electrochemical Analysis and Applications
- Multimedia Communication and Technology
- Green IT and Sustainability
- ICT Impact and Policies
Jaguar Land Rover (United Kingdom)
2023
University of Warwick
2016-2018
Li-ion cell designs, component integrity, and manufacturing processes all have critical influence on the safety of batteries. Any internal defective features that induce a short circuit, can trigger thermal runaway: cascade reactions, leading to device fire. As consumer manufacturers push aggressively for increased battery energy, instances field failure are increasingly reported. Notably, Samsung made press release in 2017 following total product recall their Galaxy Note 7 mobile phone,...
Silicon-Few Layer Graphene (Si-FLG) composite electrodes are investigated using a scalable electrode manufacturing method. A comprehensive study on the electrochemical performance and impedance response is measured spectroscopy. The demonstrates that incorporation of few-layer graphene (FLG) results in significant improvement terms cyclability, resistance diffusion properties. Additionally, responses occur during phase changes silicon elucidated through Staircase Potentio Electrochemical...
Measurements of the open circuit voltage Li-ion cells have been extensively used as a non-destructive characterisation tool. Another technique based on entropy change measurements has also applied for this purpose. More recently, both techniques to make qualitative statements about aging in cells. One proposed cause cell failure is point defect formation electrode materials. The steps profiles, and peaks profiles are sensitive order/disorder transitions arising from Li/vacancy...
We illustrate a simple and effective electrolyte extraction methodology from commercial 18650 lithium-ion cells. This is based on liquid-liquid step, which highlighted for robustness, reproducibility, reliability. assess the consumption of by tracking compositional changes using liquid-state nuclear magnetic resonance (NMR) spectroscopy, supported differential thermal analysis (DTA) before after cell cycling. An method that monitors dynamics presented shows impact these throughout cell’s...
Li-ion cell designs, component integrity and manufacturing processes all have critical influence on the safety of batteries. Any internal defective features that induce a short circuit, can trigger thermal runaway: cascade reactions, leading to device fire. As consumer manufacturers push aggressively for increased battery energy, instances field failure are increasingly reported. Notably Samsung made press release in 2017 following total product recall their Galaxy Note 7 mobile phone,...
The ongoing demand for smaller and lighter devices, with batteries having longer usage times, has put increasing operational pressure on the batteries. use of higher capacity cathodes, areal thinner separators are some approaches used to achieve energy densities. Here we report two case studies from Samsung Galaxy Note 7 phone fitness tracker wristband, Fitbit Flex 2, highlighting where device manufacturers were pushing boundaries this density. In September 2016, several reports published...
Manufacturer of Li-ion batteries specify the maximum application temperature their products to around 50 – 60 °C. If operated at higher temperatures cells tend generate gas and age much faster. When a battery reaches critical limit it could even result in thermal runaway explosion cell. However, some industries require stability devices for up 80 °C higher. To evaluate cycling behaviour under these conditions, commercial pouch (1.2 Ah) without electrolyte have been obtained from Li-Fun...