11 (7) Flashcards

(10 cards)

1
Q

What is the energy density range for Generation 1 Lithium-ion batteries?

A

200-250 Wh/kg

Generation 1 Lithium-ion batteries are considered safe.

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2
Q

What is the energy density range for Generation 2 Lithium-ion batteries?

A

250-300 Wh/kg

Generation 2 Lithium-ion batteries are also considered safe.

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3
Q

What is the energy density range for Generation 3 Lithium-metal batteries?

A

400-500 Wh/kg

Generation 3 Lithium-metal batteries are the safest.

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4
Q

What are the energy density and specific energy values for Lithium-metal batteries?

A
  • Energy density: 400-500 Wh/kg
  • Specific energy: 1200 Wh/L

These values indicate high performance for Lithium-metal batteries.

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5
Q

What is the process of lithium dendrite growth?

A
  • Li plating
  • Non-uniform deposition
  • Significant volume expansion
  • SEI destruction
  • Lithium dendrite detach

This process can lead to safety hazards in lithium batteries.

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6
Q

What are the steps involved in the lithium dendrite growth process?

A
  • Step 1: Li plating
  • Step 2: Non-uniform deposition
  • Step 3: Lithium dendrite growth
  • Step 4: Li stripping

Each step contributes to the formation and potential hazards of lithium dendrites.

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7
Q

What strategies can be employed for fabricating safe Li-metal anodes?

A
  • Alternative lithium-host anodes
  • Structured anodes
  • Solid polymer electrolytes
  • Separator modification

These strategies aim to enhance the safety of lithium-metal anodes.

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8
Q

What is the significance of SEI reformation in lithium batteries?

A

It helps in stabilizing the lithium surface

SEI (Solid Electrolyte Interphase) is crucial for battery performance and safety.

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9
Q

True or false: Lithium-metal anodes are considered dangerous.

A

TRUE

Lithium-metal anodes pose safety risks due to dendrite formation.

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10
Q

What is the capacity range for lithium batteries mentioned in the text?

A

200-5000 Ah/Kg

This range indicates the varying capacities of different lithium battery generations.

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