![\"\"](\"https:\/\/www.newsbeep.com\/au\/wp-content\/uploads\/2026\/02\/Low-Res_0.jpg\" "\\"New")
Synergistic conversion of spent mobile phone batteries and industrial lignin into the composite with enhanced sodium storage performance. <\/p>\nA new sustainable method turns discarded mobile phone batteries and industrial lignin into a powerhouse material for sodium-ion batteries.\u00a0<\/p>\n
It is a stunning example of circular economy innovation. Rather than letting these materials sit in landfills or go up in smoke, the team from China is giving the waste a high-tech second life.<\/p>\n
When tested as a sodium-ion battery anode, this composite of nickel-cobalt sulfides and lignin-derived carbon delivered electrochemical results.<\/p>\n
The use of abundant waste materials may open the door to lower manufacturing costs and improved energy storage options for both electric vehicles and power grids.<\/p>\n
\u201cSodium-ion batteries are attractive because sodium is abundant, low-cost, and environmentally friendly,\u201d the researchers from the Shenyang Agricultural University in China explained.\u00a0<\/p>\n
\u201cHowever, the development of efficient electrode materials remains a major challenge. Our work shows that waste resources can provide a solution,\u201d they added in the press release.\u00a0<\/p>\n
Synergistic conversion of spent mobile phone batteries and industrial lignin into the composite with enhanced sodium storage performance. <\/p>\n
Greener battery material<\/p>\n
For this waste conversion process, the team used the hydrothermal synthesis technique.\u00a0<\/p>\n
The process enables the extraction of key metals, such as nickel and cobalt, from old batteries. After this, the compounds are fused with carbon derived from lignin. Lignin is a significant byproduct of paper and biofuel production.<\/p>\n
The resulting composite is more than just a recycled mix; it is also a highly functional electrode<\/a>.\u00a0<\/p>\n Lignin acts as a robust carbon coating, boosting electrical conductivity and stabilizing the electrode, while the recovered metal sulfides provide the necessary reaction sites for sodium-ion storage.<\/p>\n The electrode material\u2019s unique structure facilitates efficient ion transport while ensuring long-term structural integrity.<\/p>\n During testing, the material achieved an initial discharge capacity exceeding 1,000 milliampere hours per gram. Even at high power demands, it maintained a strong, reliable performance.<\/p>\n \u201cEven at high current densities, the material retained notable capacity, demonstrating its ability to support rapid charge and discharge processes,\u201d the researchers stated.\u00a0<\/p>\n<\/p>\n Circular economy<\/p>\n Meeting the rising demand for sustainable energy<\/a> will require materials that successfully balance affordability with high performance.<\/p>\n Sodium-ion batteries<\/a> are often considered a sustainable energy storage solution due to the lower costs and greater abundance of sodium compared to lithium.<\/p>\n These could be used for applications such as grid storage, electric vehicles, and portable electronics.\u00a0<\/p>\n However, these batteries have typically struggled with efficient electrode materials. This new method tackles two environmental headaches at once: e-waste and the valorization of industrial byproducts.<\/p>\n It establishes a sustainable recycling pathway for the millions of discarded batteries replaced annually while simultaneously repurposing industrial lignin into a key component for clean energy technology.<\/p>\n \u201cWe wanted to move beyond traditional recycling and demonstrate true high-value reuse of waste,\u201d the authors noted.<\/a> \u201cBy converting discarded batteries and industrial lignin into advanced energy materials, we can reduce costs, conserve resources, and support cleaner technologies.\u201d<\/p>\n While the laboratory performance is a major milestone, it remains to be seen if the technique could be scaled for wider use.<\/p>\n If successful, this method could drive down manufacturing costs and accelerate the commercial adoption of sodium-ion batteries.<\/p>\n