News by Levels · Level 2 · Student worksheet

Iodine Chemistry Boosts Battery Storage

In this lesson: Connect electrolyte design with a demonstrated result and next step.

Name: __________________________ Date: __________________

Read the story

A UCL-led team developed a liquid electrolyte that lets iodine transfer four electrons during battery charging and discharging, rather than two.

The water-based design stored more energy in laboratory tests. Larger-scale testing under realistic conditions remains a next step.

Source: University College London via Tech Xplore, 2026-11-13. https://techxplore.com/news/2026-11-based-batteries-energy-iodine-electrolyte.html

Read and practise

1. What allows the change in iodine transfer?

   1. A liquid electrolyte developed by the team
   2. Changing only the outer battery case
   3. Using larger cells without changing the electrolyte

2. Where was the higher energy storage demonstrated?

   1. In full-size commercial grid storage
   2. In a completed large-scale field trial
   3. In laboratory tests

Your turn

Describe the laboratory result and how the next testing stage differs.

________________________________________________________________
________________________________________________________________
________________________________________________________________

Read online: https://newsbylevels.com/news/ucl-water-battery-iodine-electron-transfer-november-2026/level-2/