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Porous Tin for High Energy Density Lithium-ion Batteries


Due to the high demand for mobile electronics, electric vehicles and renewables,

lithium ion batteries (LIBs) are considered as the promising technology to

support the further development of this technology. Due to the high demand for

high energy and high power density, conventional graphite anode fall-short of

meeting the capacity requirement for next generation electronic devices. We

studied Tin, because this material has much higher capacity (991 mAh/g) and

could replace commercial graphite anodes. However, continuous

charge/discharge cycles, the problem of significant volume expansion is

experienced. For this project, we successfully synthesis a stable porous Tin

material exhibiting good stability for up to 200 cycles. Based on the dealloy

process of Mg-Sn alloy for Tin, we control the particle size and the porosity of the

Tin particles. Based on our result, porous Tin is a promising candidate for next

generation lithium ion batteries.

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