# Background

## Components

### Search

The Battery Explorer app, just like the Materials Explorer app, provides a search bar where one can search by chemical formula (eg. "CoO2") or by chemical system (eg. "Fe-P-O"). The user can also click on the periodic table to add elements to the search.

### Advanced Options

On the left tab on the app, users can choose to filter query results by composition and working ion, as well as battery properties such as average voltage or capacity.

![](/files/IjutXQJ1zRbw6QbQnhQX)

![](/files/o3upvhVdFO8TM1f8Xw1N)

### Visualization Viewer

The battery material details page provides a visualization for the host material of the battery.

### Data Table

The search result data table provides info on each entry, including formula, volume change, capacity and energy, etc.

## Thermodynamic data


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.materialsproject.org/apps/explorer-apps/battery-explorer/background.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.