A5044984956- Advanced Battery Technologies Research
- Advancements in Battery Materials
- Advanced Battery Materials and Technologies
- VLSI and Analog Circuit Testing
- Tribology and Lubrication Engineering
- Low-power high-performance VLSI design
- Electron and X-Ray Spectroscopy Techniques
- Analytical Chemistry and Sensors
- Semiconductor materials and devices
- Advanced machining processes and optimization
- Physics and Engineering Research Articles
- Manufacturing Process and Optimization
Technical University of Munich
2015-2018
In this paper we introduce a pseudo two-dimensional (P2D) model for common lithium-nickel-cobalt-manganese-oxide versus graphite (NCM/graphite) cell with solid electrolyte interphase (SEI) growth as the dominating capacity fade mechanism on anode and active material dissolution main aging cathode. The SEI implementation considers due to non-ideal insulation properties during calendar well cyclic re-formation after cracking of layer expansion. Additionally, our approach distinguishes between...
A single-layered NMC/graphite pouch cell is investigated by means of differential local potential measurements during various operation scenarios. 44 tabs in total allow for a highly resolved measurement along the electrodes whilst single layer configuration guarantees absence superimposed thermal gradients. By applying multi-dimensional model framework to this cell, current density and SOC distribution are analyzed quantitatively. The study performed four C-rates (0.1C, 0.5C, 1C, 2C) at...
Inhomogeneous utilization of electrodes and consequent limitations in the operating conditions are a severe problem, reducing lifetime safety. By using previously developed laboratory cell setup, we able to show an inhomogeneous retrieval lithium-ions from graphite electrode throughout layer with spatial resolution for two different graphites. After provoking inhomogeneities via constant current operations, equilibration processes recorded assigned effects. One effect is inside particles...
Future battery applications require higher energy densities as e.g. range and longer lifetime in automotive are demanded by the customers will help to increase acceptance of electric vehicles. To density lithium-ion cells, ratio between passive components active material needs be improved thicker electrodes [1]. Unfortunately, can lead an even more pronounced inhomogeneous utilization already seen normal sized [2, 3]. Inhomogeneous consequent limitations operating conditions have recently...