Electrochemical Energy Storage


Electrochemistry is the study of chemical reactions which cause electron movement (electricity). These reactions produce a lot energy which can be harnessed if we can understand how the reactions work and how to utilise them.

Learning objectives:
1. Learn about energy storage solutions
2. Understand how electrochemistry reactions are measured
3. Calculate the performance of a battery

What do these all have in common?
- Mobile phone
- Electric car
- Laptop
- Smartwatch

How are they powered?

They are all powered by batteries!

Electrochemical reactions are happening all around us! In our phones, laptops, smart watches and electric cars. Batteries harness the energy produced from electrochemical reactions which allow us to use devices for hours on end.

Energy storage is become an important problem in the fight against climate change.
Sustainable energy sources such as wind turbines and solar panels are great at producing energy for us to use. However, wind turbines are dependent on how windy a particular day is, and solar panels need the sun to produce electricity. These variable energy sources mean we need to store energy so that we can use it in the night when there is no sun, or when there is no wind.

One of the most common energy storage solutions are batteries which are incredibly useful for small to medium sized portable devices. Another solution is redox flow batteries which are useful for large-scale industrial size energy storage. In this resource we will look at these electrochemical energy storages as well are understanding how these reactions can be measured and understood.

Get started by clicking the resources below and test your knowledge at the end by trying the quiz!

We will cover...

In the below resource activities we will cover: 

1. Batteries

2. How do we measure electrochemical reactions?

3. How do we evaluate battery performance? 

4. Large scale energy storage solutions

You can then test what you have learnt in our Quiz!

Resource activities

Resource 1: Batteries


Resource 2: How do we measure electrochemical reactions?


Resource 3: How do we evaluate battery performance?


Resource 4: Large scale energy storage solutions



In this quiz you will identify the key parts of a battery.

You will also calculate the capacity and discharge of an example battery.


Quiz Solutions!

Solutions to the quiz.


Activity questions

  • What is the liquid inside a battery called?
  • What equipment piece can we use to measure current as we change the voltage?
  • What is the difference between a battery and a redox flow battery?
  • What is the maximum distance you can drive a Tesla on a single charge?

Reflective questions

To answer and record these questions you will need to have an account and be logged in.

Task 1

What are the key arguments, concepts, points contained within it?

Task 2

What are you struggling to understand?

What could you do to improve your understanding of these concepts/terminology etc.?

Task 3

What further questions has this resource raised for you?

What else are you keen to discover about this topic and how could you go about learning more?

Can you make any links between this topic and your prior knowledge or school studies?

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Further reading

  • Cyclic Voltammetry

    Learn about how to interpret cyclic voltammetry data and the underlying reactions.

  • Battery Faults

    Batteries can go wrong, and the Samsung Note 7 is an example of how a battery can fail when pushed to the limit.

  • The rise and rise of lithium

    Lithium is a scares element which many current and next-generation batteries rely upon. Read this article to understand how we can keep up with demand.