Chinese Researchers Build Solar Seesaw That Extracts Lithium 15-Fold and Produces Water
Updated
Updated · en.clickpetroleoegas.com.br · Jun 2
Chinese Researchers Build Solar Seesaw That Extracts Lithium 15-Fold and Produces Water
1 articles · Updated · en.clickpetroleoegas.com.br · Jun 2
Summary
A Zhejiang University-led team built a lab-scale device that uses only sunlight and gravity to concentrate lithium from seawater and also yield low-salinity water.
By evaporating seawater and swinging like a seesaw, the system sheds salt crust automatically, avoiding clogging while boosting lithium concentration more than 15 times at the capture point.
Tests in simulated seawater showed the setup captured about 70% more lithium than the manganese-oxide adsorbent alone, a key gain for a metal present at just 0.2 milligrams per liter in seawater.
The main hurdle is durability: the adsorbent degrades after about 30 cycles, regeneration requires acid, and the device has not yet been proven in real ocean conditions.
Independent researchers called the approach smart but not a paradigm shift, underscoring its promise as an incremental step toward cleaner lithium supply and desalination.
Is ocean lithium extraction a green energy miracle or a new threat to our marine ecosystems?
With billions invested in extraction tech, is this simple 'seesaw' device a breakthrough or just a drop in the ocean?
Solar Seesaw Device Achieves 98% Solar Efficiency for Lithium Extraction and Water Desalination from Seawater: A Sustainable Solution to the Global Lithium Crisis
Overview
As global demand for lithium rises and sustainable solutions become urgent, Chinese researchers have developed a novel solar-powered 'seesaw' device that uses only sunlight and gravity. This prototype efficiently extracts lithium directly from seawater—a vast, untapped resource—while also desalinating water to produce potable water as a valuable byproduct. The device addresses the pressing challenges of resource acquisition and water purification, offering a timely response to the immense pressure on traditional lithium sourcing methods. By combining innovation with environmental responsibility, this technology represents a promising step toward meeting future resource and sustainability needs.