A research team at ARCI, Chennai, India have successfully used micron-sized tin as an anode for lithium-ion batteries to achieve cost-effective energy capacity, lifetime and power performance.

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.

Wiley Online Paper August 2019
Centre for Automotive Energy Materials (ARCI), India webpage

ITA Report – Tin in Lithium-ion Batteries, Jan 2019

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