What are the three types of electrochemical reactions in LIBs?
- Intercalation
- Alloy
- Conversion
These types describe different mechanisms for lithium-ion storage and release.
Name the advantages of carbonaceous materials in LIBs.
- Good working potential
- Good safety
- Low cost
Carbonaceous materials are commonly used for their favorable properties.
What are the advantages of titanium oxides in LIBs?
- Extreme safety
- Low cost
- Long cycle life
- High power capability
Titanium oxides are considered safe and efficient for energy storage.
List the advantages of alloy materials in LIBs.
- Higher specific capacity
- High energy density
- Good safety
Alloy materials are known for their performance in energy density.
What are the common issues associated with conversion materials in LIBs?
- High voltage hysteresis
- High irreversible capacity
These issues can affect the efficiency and lifespan of conversion materials.
What are the common issues with alloy materials in LIBs?
- Very low capacity
- Low energy density
- Large irreversible capacity
- Huge capacity fading
- Poor cycling
These challenges limit the practical use of alloy materials.
What are the characteristics of metal oxides in LIBs?
- High capacity
- Low cost
- Environmental benignity
Metal oxides are often favored for their environmental impact and cost-effectiveness.
What are the characteristics of metal phosphides/sulfides/nitrides in LIBs?
- High capacity
- Low operation potential
- Low polarization
These materials can offer advantages in specific applications within LIBs.
What are the limitations of titanium-based oxides (LTO) in LIBs?
- Poor electronic conductivity (10^-13 S cm^-1)
This limitation affects the capacity performance at high C-rates.
What is the operating potential of lithium insertion/extraction in LTO?
1.55 V vs. Li/Li+
This potential is significant for the reversibility of Li-ion in titanium-based oxides.
Fill in the blank: Lithium insertion/extraction in LTO occurs by the lithiation of spinel _______ yielding rock salt type LI7 Ti5012.
Li4Ti5O12
This process is crucial for the functioning of LTO in LIBs.
