+44-1518-081136High-performance anode materials for next generation Na-ion batteries
International Conference on Materials Science and Engineering
July 23-25, 2018 | Moscow, Russia
EunAe Cho, TaeHee Kim and JaeWook Shin
Korea Advanced Institute of Science and Technology, South Korea
Posters & Accepted Abstracts : Mater Sci Nanotechnol
Abstract:
Because of their high energy density, Li-ion batteries have
attracted attention as a large energy storage system
over their traditional use for portable and electric vehicle
applications. However, there are concerns about the scarcity,
uneven global distribution and high cost of lithium resources.
Compared with Li, Na has the advantages of natural abundance
and low cost. Furthermore, Na and Li are in the same main
group, exhibiting similar chemical properties, which translates
to a resemblance between operational characteristics in Li-ion
batteries and Na-ion batteries. Therefore, Na-ion batteries have
been suggested for the alternatives to Li-ion batteries for largescale
systems. For the practical use of Na-ion batteries, studies
for finding suitable electrode materials with high energy density,
good cyclability and rate performance for Na-ion batteries have
been actively conducted. Although several cathode materials
have been suggested, the anode choices are severely limited
because of the unique characteristic of Na. Na-ions cannot be
stored in the commercial layered graphite because of their large
radius. Si based materials are expected to be the most promising
anode for Li-ion batteries, but it is electrochemically inactive
with Na. To explore a high-performance anode materials for
Na-ion batteries, we synthesized i) pure Sn electrodes with
various structures such as Sn nanofibers, Sn multilayer, and
Sn foam ii) MoS2/MoOx (2