Researchers from the Massachusetts Institute of Technology (MIT) and collaborating institutions developed a low-cost technique to extract battery-grade lithium from hard-rock minerals [1].
The breakthrough addresses the soaring global demand for lithium-ion batteries by reducing the energy and chemical costs associated with traditional mining [1]. Current industrial methods for extracting lithium from hard rocks are resource-intensive and environmentally damaging.
Traditional hard-rock lithium extraction requires heating rocks to temperatures over 1,000 °C [1]. This high-heat requirement contributes to significant energy consumption and carbon emissions during the production of raw materials for electric vehicle batteries.
The new process developed in Cambridge, Massachusetts, operates at room temperature, approximately 20-25 °C [2]. By using a liquid-reagent process, the team can pull lithium from the most common lithium-bearing hard-rock minerals without the need for extreme heat [2].
Beyond energy savings, the MIT team designed the method to be environmentally sustainable. The process generates near-zero waste compared with conventional extraction methods [3]. This closed-loop approach aims to prevent the ecological degradation often associated with large-scale mining operations.
The researchers focused on creating a system that maintains the quality of the output. The resulting lithium is battery-grade, meaning it meets the purity standards required for commercial use in high-capacity batteries [1].
This development comes as the U.S. and other nations seek to secure domestic supplies of critical minerals. By lowering the cost and environmental impact of extraction, the technique may make more rock deposits economically viable for mining [1].
“The new process operates at room temperature, approximately 20-25 °C.”
This shift from high-heat smelting to room-temperature chemical extraction could fundamentally change the economics of the battery supply chain. By removing the energy-intensive heating phase and eliminating most waste, the process reduces the primary barriers to sustainable lithium sourcing, potentially lowering the cost of electric vehicle batteries and reducing the carbon footprint of the mining industry.
