TY - JOUR
T1 - Layered Na2RuO3 as a cathode material for Na-ion batteries
AU - Tamaru, Mao
AU - Wang, Xianfen
AU - Okubo, Masashi
AU - Yamada, Atsuo
N1 - Funding Information:
This work was financially supported by the Mitsubishi Motors Corporation . A part of this work was performed under a management of ‘Element Strategy Initiative for Catalysis & Batteries’ (ESICB) by the Ministry of Education, Culture, Sports, Science and Technology, Japan. The crystal structure was drawn using the VESTA software [18] .
PY - 2013
Y1 - 2013
N2 - Na-ion batteries have attracted much interest recently due to strong industrial demands for inexpensive and efficient energy storage. Although layered NaxMO2 (0 < x < 1, M: transition metal) is the subject of intense studies as cathode materials for the Na-ion batteries, the electrochemical properties of layered Na2MO3 have not been clarified to date. The present work demonstrates that Na 2RuO3 can show reversible Na-ion insertion/extraction leading to the specific capacity of 140 mA h g-1 at the average potential of 2.8 V vs. Na/Na+. Both the capacity retention and Coulombic efficiency are kept at almost 100% during 20 cycles, which suggests high reversibility of the electrochemical reaction. Due to the fast Na-ion diffusion and metallic conduction, Na2RuO3 can show the excellent rate capability, where 53% of the maximum discharge capacity is retained even at a high discharge rate of 5C.
AB - Na-ion batteries have attracted much interest recently due to strong industrial demands for inexpensive and efficient energy storage. Although layered NaxMO2 (0 < x < 1, M: transition metal) is the subject of intense studies as cathode materials for the Na-ion batteries, the electrochemical properties of layered Na2MO3 have not been clarified to date. The present work demonstrates that Na 2RuO3 can show reversible Na-ion insertion/extraction leading to the specific capacity of 140 mA h g-1 at the average potential of 2.8 V vs. Na/Na+. Both the capacity retention and Coulombic efficiency are kept at almost 100% during 20 cycles, which suggests high reversibility of the electrochemical reaction. Due to the fast Na-ion diffusion and metallic conduction, Na2RuO3 can show the excellent rate capability, where 53% of the maximum discharge capacity is retained even at a high discharge rate of 5C.
KW - Cathode materials
KW - Electrochemistry
KW - Ruthenium oxide
KW - Sodium-ion batteries
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U2 - 10.1016/j.elecom.2013.04.011
DO - 10.1016/j.elecom.2013.04.011
M3 - Article
AN - SCOPUS:84877670723
SN - 1388-2481
VL - 33
SP - 23
EP - 26
JO - Electrochemistry Communications
JF - Electrochemistry Communications
ER -