Open AccessSuperior Low-Temperature Power and Cycle Performances of Na-Ion Battery over Li-Ion Battery
Author(s) -
Kazuhiko Mukai,
Takao Inoue,
Yuichi Kato,
Soichi Shirai
Publication year - 2017
Publication title -
acs omega
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.779
H-Index - 40
ISSN - 2470-1343
DOI - 10.1021/acsomega.6b00551
Subject(s) - battery (electricity) , ion , power density , raman spectroscopy , materials science , power (physics) , carbon fibers , chemistry , chemical engineering , analytical chemistry (journal) , nanotechnology , composite material , thermodynamics , physics , chromatography , organic chemistry , engineering , composite number , optics
The most simple and clear advantage of Na-ion batteries (NIBs) over Li-ion batteries (LIBs) is the natural abundance of Na, which allows inexpensive production of NIBs for large-scale applications. However, although strenuous research efforts have been devoted to NIBs particularly since 2010, certain other advantages of NIBs have been largely overlooked, for example, their low-temperature power and cycle performances. Herein, we present a comparative study of spirally wound full-cells consisting of Li 0.1 Na 0.7 Co 0.5 Mn 0.5 O 2 (or Li 0.8 Co 0.5 Mn 0.5 O 2 ) and hard carbon and report that the power of NIB at -30 °C is ∼21% higher than that of LIB. Moreover, the capacity retention in cycle testing at 0 °C is ∼53% for NIB but only ∼29% for LIB. Raman spectroscopy and density functional theory calculations revealed that the superior performance of NIB is due to the relatively weak interaction between Na + ions and aprotic polar solvents.