Porous Tin for High Energy Density Lithium-ion Batteries
- Author(s): Shen, Chia-Ying
- Advisor(s): Tolbert, Sarah H.
- et al.
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.