Texas A & M Researchers Developing Fish-Inspired Nanorobots to Recover Lithium from Seawater

A team at Texas A&M University is developing a new approach to lithium recovery by designing tiny swimming nanorobots that mimic the movement of fish. Supported by a $1 million award from the U.S. Department of Energy, the project aims to make lithium extraction from seawater more efficient and environmentally sustainable. Unlike conventional mining or brine pumping, which require substantial infrastructure and energy, the nanorobots are designed to move through seawater and actively seek lithium ions. External stimuli such as light can power the robots, while magnetic fields can guide their movement. Research Challenges The research team, led by Dr. Shiren Wang and Dr. Jingjing Qiu, is focused on improving robot performance, testing recovery efficiency, and scaling the technology for larger demonstrations. Key challenges include separating lithium from other minerals in seawater, ensuring durability in marine environments, and demonstrating continuous operation at industrial scale. Why It Matters If successful, the approach could turn seawater into an additional source of lithium, potentially reducing reliance on land-based mining and supporting supply chains for electric vehicles, battery systems, and renewable-energy infrastructure.