---
id: "2020-07-08-mobile-robotic-chemist"
url: "https://postcutoff.com/e/2020-07-08-mobile-robotic-chemist/"
as_of: "2026-11-13T13:49:00+01:00"
date: "2020-07-08"
date_precision: day
category: science
importance: 3
confidence: high
status: [Result confirmed]
verification: Peer-reviewed
sources: 2
editor: human editor
human_review: null
version: "2026-10-04"
---

As of: 2026-11-13 13:49 CET.
Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/
Canonical page: https://postcutoff.com/e/2020-07-08-mobile-robotic-chemist/

# Liverpool's mobile robot chemist runs 688 experiments in 8 days and finds a 6× better photocatalyst

Andrew Cooper's group (Nature, July 2020) built a mobile robot that moved around a standard lab and ran 688 experiments over 8 days in a 10-variable space, guided by batched Bayesian optimisation. It found photocatalyst formulations about 6× more active for hydrogen production from water than the starting mixtures.

## Key facts
- 688 experiments, 8 days, 10-dimensional search space
- ~6× improvement in hydrogen-evolution activity
- Operated autonomously, including nights and weekends

## What happened

A humanoid-sized mobile robot used ordinary lab instruments and an optimisation algorithm to choose and run experiments by itself.

## Why it matters

It is a landmark for self-driving laboratories, the physical half of the "AI scientist" vision.

## Your AI and this story

- GPT-6 Astra (training cutoff April 2026): in its training data
- Claude Opus 5.5 (training cutoff June 2026): in its training data
- Gemini 4 Hydrogen (training cutoff March 2026): in its training data
- Grok 4.7 (training cutoff May 2026): in its training data

## Sources

1. [A mobile robotic chemist (Nature)](https://www.nature.com/articles/s41586-020-2442-2) (nature.com, paper)
2. [C&EN: Robot runs almost 700 chemistry experiments](https://cen.acs.org/physical-chemistry/computational-chemistry/Robot-runs-almost-700-chemistry/98/i27) (cen.acs.org, press)

## Changes

- 2026-09-29 (filed): Created

## Related

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- 2023-11-29: [Berkeley's A-Lab claims 41 new materials from autonomous synthesis](https://postcutoff.com/e/2023-11-29-a-lab-autonomous-synthesis-dispute/index.md)