They used the <10 micron tin powder without any of the typically complex and expensive secondary modifications applied in advanced anode materials. At the same time an environmentally benign water-based binder ensured a sustainable product. Their work published in the Wiley Online Library received a prestigious recognition as a Hot Topic in Sustainable Chemistry.
The optimised tin anode outperformed conventional graphite anodes, achieving capacities of 723 and 506 mAhg-1 at 0.1C and 1C rate respectively, retaining >80% performance after 1,500 cycles. A particularly fast delithiation reaction capacity of 478 mAhg-1 at 5C could boost electric vehicle acceleration.
Development of cost-effective, scalable and sustainable production routes will significantly increase potential for new tin use in lithium-ion batteries.