Environmental Engineering Reference
In-Depth Information
Cathode and Anode Materials
for Na-Ion Battery
Lifen Xao, Yuliang Cao and Jun Liu
Abstract Energy storage is more important today than at any time in the human
history. The battery systems that are pursued for clean renewable energy-based
grid or the electrification of transportation need to meet the requirements of low
cost and high efficiency. Li-ion battery is the most advanced battery system, but it
is expensive and insufficient as a resource for widespread application. Na-ion
battery is seen as a promising alternative due to the abundance of Na resource.
However, the realization of the Na-ion intercalation/deintercalation mechanism is
also challenging because Na ions are 40 % larger in radius than Li ions. This
makes the finding of suitable host materials with high storage capacity, rapid ion
uptaking rate, and long cycling life not easy. In the recent 3 years, several elec-
trode materials were found to have energy density close to those used in Li-ion
batteries. These scientific advances have greatly rekindled worldwide passion for
Na-ion battery system. In this chapter, the development of the electrode materials
for Na-ion batteries is briefly reviewed, with the aim of providing a wide view of
the problems and future research orientations of this system.
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