# Energizer (DD-236)

> Lithium-ion batteries power phones, laptops and electric vehicles. Making them starts with mining and refining materials such as lithium, nickel, cobalt, manganese and graphite. These become the anode (usually graphite) and cathode (a lithium metal oxide), which are coated onto foils, combined with a separator and electrolyte, and sealed into cells. Cells are charged for the first time, aged and tested, then assembled into modules and packs. China dominates production, with most of the world's cell manufacturing capacity in the early 2020s. The footage shows battery factories and assembly lines, with the presenter.

- Department: Tech (also Science)
- First published: 2024-05-20
- Last updated: 2024-05-20
- Permalink: https://detailenjoyer.com/case/energizer/
- Original Reel title: Energizer ⚡️
- Author: Marcus Easterling (DetailEnjoyer), The Detail Department

## Quick facts

- **DD-236-F01**: Lithium, nickel, cobalt and graphite are key. _(Write-up · Exhibit A (Raw materials))_
- **DD-236-F02**: The anode is usually graphite. _(Write-up · Exhibit B (Electrodes))_

## Write-up

Lithium-ion batteries start with lithium, cobalt, nickel and graphite. China makes most of the world's lithium-ion cells.

1. **Raw materials**: Lithium, nickel, cobalt and graphite are key.
2. **Electrodes**: The anode is usually graphite.
3. **Cells**: Electrodes, separator and electrolyte are sealed into cells.
4. **Formation**: Cells are charged, aged and tested.
5. **China**: China leads cell production.

## Related case files

- [Shrinking Circuits (DD-018)](https://detailenjoyer.com/case/shrinking-circuits/): I linked more electronics manufacturing

## Reel vs. record

- **Note**: The Reel's figures (over 5 billion lithium-ion batteries a year, and a 72% share of production for China in 2020) vary by source and year, so I didn't repeat them as facts.

## Video: Energizer: Lithium-Ion Batteries Start With Lithium, Cobalt, Nickel and Graphite

- Duration: 49.7 s · Published: 2024-05-20
- File: https://detailenjoyer.com/assets/videos/C7NOiSxp07-.mp4

### Transcript

Batteries are ubiquitous in our modern world, powering everything from smartphones to electric vehicles. DID YOU KNOW? The production process begins with the extraction and processing of raw materials like lithium, cobalt, nickel, and graphite. These materials are then used to create the key components of batteries, the anode, cathode, and electrolyte. These components are assembled into cells, which are rigorously tested to ensure quality and performance. Once tested, the cells are packaged into battery packs, ready for use. Each year over 5 billion lithium-ion batteries are produced globally to meet the growing demand for electric vehicles and renewable energy storage. China leads the world in battery production, accounting for over 72% of global production in 2020, with the electric industry expected to be over 1000 GWh capacity by 2025. The demand for batteries continues to rise, driving advancements in production processes and technology. NOW YOU KNOW!

## Questions & answers

**Q: Which metal gives these batteries their name?**  
A: Lithium-ion. _(Source: Write-up · Exhibit A (Raw materials) · Wikipedia: Lithium-ion battery)_

**Q: What is the anode usually made of?**  
A: Carbon. _(Source: Write-up · Exhibit B (Electrodes) · Wikipedia: Lithium-ion battery)_

**Q: What separates the electrodes?**  
A: Inside each cell. _(Source: Write-up · Exhibit C (Cells) · Wikipedia: Lithium-ion battery)_

**Q: What happens after assembly?**  
A: Quality checks. _(Source: Write-up · Exhibit D (Formation) · Wikipedia: Lithium-ion battery)_

**Q: Which country leads production?**  
A: Most capacity. _(Source: Write-up · Exhibit E (China) · IEA: Global EV Outlook 2024, Trends in electric vehicle batteries)_

## Sources

- [Wikipedia: Lithium-ion battery](https://en.wikipedia.org/wiki/Lithium-ion_battery)
- [IEA: Global EV Outlook 2024, Trends in electric vehicle batteries](https://www.iea.org/reports/global-ev-outlook-2024/trends-in-electric-vehicle-batteries)

## Cite this case file

Easterling, Marcus. "Energizer." The Detail Department (DetailEnjoyer), case file DD-236, last updated May 20, 2024. https://detailenjoyer.com/case/energizer/