TY - JOUR
T1 - Electrochemical and structural study of layered P2-type Na2/3Ni1/3Mn2/3O2 as cathode material for sodium-ion battery
AU - Wen, Yanfen
AU - Wang, Bei
AU - Zeng, Guang
AU - Nogita, Kazuhiro
AU - Ye, Delai
AU - Wang, Lianzhou
N1 - Publisher Copyright:
© 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2015/3
Y1 - 2015/3
N2 - P2-type Na2/3Ni1/3Mn2/3O2 was synthesized by a controlled co-precipitation method followed by a high-temperature solid-state reaction and was used as a cathode material for a sodium-ion battery (SIB). The electrochemical behavior of this layered material was studied and an initial discharge capacity of 151.8 mAhg-1 was achieved in the voltage range of 1.5-3.75 V versus Na+/Na. The retained discharge capacity was found to be 123.5 mAhg-1 after charging/dis charging 50 cycles, approximately 81.4% of the initial discharge capacity. In situ X-ray diffraction analysis was used to investigate the sodium insertion and extraction mechanism and clearly revealed the reversible structural changes of the P2-Na2/3Ni1/3Mn2/3O2 and no emergence of the O2-Ni1/3Mn2/3O2 phase during the cycling test, which is important for designing stable and high-performance SIB cathode materials.
AB - P2-type Na2/3Ni1/3Mn2/3O2 was synthesized by a controlled co-precipitation method followed by a high-temperature solid-state reaction and was used as a cathode material for a sodium-ion battery (SIB). The electrochemical behavior of this layered material was studied and an initial discharge capacity of 151.8 mAhg-1 was achieved in the voltage range of 1.5-3.75 V versus Na+/Na. The retained discharge capacity was found to be 123.5 mAhg-1 after charging/dis charging 50 cycles, approximately 81.4% of the initial discharge capacity. In situ X-ray diffraction analysis was used to investigate the sodium insertion and extraction mechanism and clearly revealed the reversible structural changes of the P2-Na2/3Ni1/3Mn2/3O2 and no emergence of the O2-Ni1/3Mn2/3O2 phase during the cycling test, which is important for designing stable and high-performance SIB cathode materials.
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U2 - 10.1002/asia.201403134
DO - 10.1002/asia.201403134
M3 - Article
AN - SCOPUS:84923354340
SN - 1861-4728
VL - 10
SP - 661
EP - 666
JO - Chemistry - An Asian Journal
JF - Chemistry - An Asian Journal
IS - 3
ER -