Sodium-ion batteries in EV Technology - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the sentence to describe the main element used in sodium-ion batteries.

EV Technology

Sodium-ion batteries primarily use [1] ions to store and release energy.

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Asodium

Bcalcium

Cpotassium

Dlithium

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing sodium with lithium because lithium-ion batteries are more common.

Choosing potassium or calcium which are also metals but not used here.

Sodium-ion batteries use sodium ions (Na+) as the charge carriers, unlike lithium-ion batteries which use lithium ions.

2fill in blank

medium

Complete the sentence to explain a key advantage of sodium-ion batteries.

EV Technology

One advantage of sodium-ion batteries is that sodium is [1] than lithium, making it more abundant and cheaper.

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Ararer

Bless reactive

Cheavier

Dmore abundant

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing 'rarer' which is the opposite of the correct answer.

Confusing chemical properties like reactivity instead of abundance.

Sodium is more abundant in the Earth's crust than lithium, which can reduce costs and supply risks for batteries.

3fill in blank

hard

Fix the error in the sentence about sodium-ion battery energy density.

EV Technology

Sodium-ion batteries generally have a [1] energy density compared to lithium-ion batteries.

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Ahigher

Bunpredictable

Clower

Dequal

Attempts:

3 left

💡 Hint

Common Mistakes

Assuming sodium-ion batteries have higher or equal energy density.

Choosing 'unpredictable' which is not a standard comparison.

Sodium-ion batteries usually have lower energy density than lithium-ion batteries, meaning they store less energy for the same weight.

4fill in blank

hard

Fill both blanks to complete the sentence about sodium-ion battery materials.

EV Technology

The [1] is commonly used as the cathode, while the [2] serves as the anode in sodium-ion batteries.

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Asodium cobalt oxide

Bgraphite

Chard carbon

Dlithium manganese oxide

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing lithium manganese oxide as a cathode for sodium-ion batteries.

Choosing graphite as an anode, which is common in lithium-ion but less effective for sodium-ion.

Sodium cobalt oxide is a common cathode material, and hard carbon is often used as the anode in sodium-ion batteries.

5fill in blank

hard

Fill all three blanks to complete the sentence about sodium-ion battery challenges.

EV Technology

Sodium-ion batteries face challenges such as [1] energy density, [2] cycle life, and [3] electrode volume changes during charging.

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Alower

Bshorter

Clarger

Dhigher

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up 'higher' and 'lower' for energy density.

Assuming cycle life is longer instead of shorter.

Underestimating electrode volume changes.

The main challenges are lower energy density, shorter cycle life, and larger volume changes in electrodes compared to lithium-ion batteries.