Related Experiment Video
Updated: Jun 25, 2025
13:58
Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
Published on: September 28, 2016
11.8K
Carbon Binder Domain Inhomogeneity in Silicon-Monoxide/Graphite Composite Anode by 2D Multiphysics Modeling
1Department of Mechanical Engineering, University of Delaware, Newark, DE, 19716, USA.
Summary
Optimizing carbon-binder domain (CBD) distribution in silicon-graphite anodes enhances lithium-ion battery performance. Strategic placement improves capacity and reduces lithium plating, but requires balancing mechanical integrity for advanced battery design.
Area of Science:
- Materials Science
- Electrochemistry
- Battery Technology
Background:
- The carbon-binder domain (CBD) is critical for lithium-ion battery electrode performance.
- Heterogeneous CBD distribution is a key factor influencing electrode behavior.
- Understanding CBD inhomogeneity effects in silicon-graphite (SiO/Gr) anodes is essential.
Purpose of the Study:
- To quantitatively investigate the impact of CBD inhomogeneity on SiO/Gr composite anode performance.
- To establish an electro-chemo-mechanical model for analyzing CBD distribution effects.
- To inform advanced battery design by exploring multiphysics modeling of CBD.
Main Methods:
- Development of a detailed electro-chemo-mechanical model.
- Geometric description of particles within the anode.
- Quantitative analysis of CBD inhomogeneity effects on anode behaviors.
Main Results:
- Reducing CBD in the upper anode domain (vs. lower domain) improves capacity and reduces lithium plating.
- This arrangement may increase risks of mechanical failure; higher CBD near SiO particles is recommended.
- An anode design with lower upper-domain CBD shows superior rate performance.
Conclusions:
- CBD distribution significantly impacts SiO/Gr anode electrochemical and mechanical performance.
- A tailored CBD gradient can optimize battery performance, balancing capacity and mechanical stability.
- This pioneering modeling study offers insights for next-generation lithium-ion battery anode design.
Keywords:
CBD inhomogeneitySiO/graphite composite anodehigh‐energy‐density batterymultiphysics modelingMore Related Videos
Related Concept Videos
02:18Network Covalent Solids
13.4K
Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
13.4K
01:19Modeling of Diode Forward Characteristics
523
Understanding the behavior of diodes when forward-biased is a fundamental aspect of electronic circuit design and analysis. This analysis primarily utilizes two models: the exponential diode model and the constant-voltage-drop model. The exponential model comes into play when the source voltage exceeds 0.5 volts, pushing the diode current to rise exponentially above the saturation current. This relationship is graphically depicted in the current-voltage (I-V) curve, illustrating the diode's...
523