TY - JOUR
T1 - Development of electrically conductive ZrO2-CaO-Fe2O3-V2O5 glass and glass-ceramics as a new cathode active materials for Na-ion batteries with high performance
AU - Khan, Irfan
AU - Zhang, Bofan
AU - Matsuda, Koken
AU - Bingham, Paul A.
AU - Kitajou, Ayuko
AU - Inoishi, Atsushi
AU - Okada, Shigeto
AU - Yoshioka, Satoru
AU - Nishida, Tetsuaki
AU - Homonnay, Zoltán
AU - Kuzmann, Ernő
AU - Kubuki, Shiro
N1 - Funding Information:
One of the authors (SK) expresses his gratitude for the financial support by Grant-in-Aid for Scientific Research (B) (KAKENHI, No. 15H03882) and cooperative research program of “Network Joint Research Center for Materials and Devices: Dynamic Alliance for Open Innovation Bridging Human, Environment and Materials” (Nos. 20201316, 20193025 and 20183034). Furthermore, KM is grateful to the International Conference Dispatch Program for Students and the Program for Enhancing Systematic Education in the Graduate Schools of Tokyo Metropolitan University.
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2022/4/5
Y1 - 2022/4/5
N2 - Glass-ceramics xZrO2•10Fe2O3•(90-x)V2O5 with ‘x’ between 0 and 30 mol% and yZrO2・(20-y)CaO・10Fe2O3・70 V2O5 glass with ‘y’ between 0 and 20 mol%, respectively abbreviated as xZFV and yZCFV, before and after heat treatment at 500 °C for 100 min, were evaluated as potential cathode-active materials for sodium-ion batteries (SIBs). Relationships between physical properties and local structure of xZFV and yZCFV glass-ceramics were investigated by 57Fe-Mössbauer spectroscopy, V K-edge X-ray absorption near edge structure (XANES), X-ray diffractometry (XRD), DC four-probe method and differential thermal analysis (DTA). SIBs containing heat-treated xZFV glass-ceramics showed the highest discharge capacity of 153 mA h g−1 under a current density of 50 mA•g−1, which exhibited a high electrical conductivity of 1.8 × 10−2 Scm−1. Precipitation of V0.05Zr0.95O2 and Fe2V4O13 nanoparticles were confirmed from the XRD pattern of the heat-treated 20ZFV glass, consistent with the lower energy of the pre-edge peak at 5467 eV in the V K-edge XANES spectrum. This result is associated with the reduction of vanadium ions from VV to VIV. It is concluded that the precipitation of stable vanadium bronze phases with high electrical conductivity and structural stability effectively enable the high SIB capacity of these materials.
AB - Glass-ceramics xZrO2•10Fe2O3•(90-x)V2O5 with ‘x’ between 0 and 30 mol% and yZrO2・(20-y)CaO・10Fe2O3・70 V2O5 glass with ‘y’ between 0 and 20 mol%, respectively abbreviated as xZFV and yZCFV, before and after heat treatment at 500 °C for 100 min, were evaluated as potential cathode-active materials for sodium-ion batteries (SIBs). Relationships between physical properties and local structure of xZFV and yZCFV glass-ceramics were investigated by 57Fe-Mössbauer spectroscopy, V K-edge X-ray absorption near edge structure (XANES), X-ray diffractometry (XRD), DC four-probe method and differential thermal analysis (DTA). SIBs containing heat-treated xZFV glass-ceramics showed the highest discharge capacity of 153 mA h g−1 under a current density of 50 mA•g−1, which exhibited a high electrical conductivity of 1.8 × 10−2 Scm−1. Precipitation of V0.05Zr0.95O2 and Fe2V4O13 nanoparticles were confirmed from the XRD pattern of the heat-treated 20ZFV glass, consistent with the lower energy of the pre-edge peak at 5467 eV in the V K-edge XANES spectrum. This result is associated with the reduction of vanadium ions from VV to VIV. It is concluded that the precipitation of stable vanadium bronze phases with high electrical conductivity and structural stability effectively enable the high SIB capacity of these materials.
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U2 - 10.1016/j.jallcom.2021.163309
DO - 10.1016/j.jallcom.2021.163309
M3 - Article
AN - SCOPUS:85121553677
VL - 899
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
M1 - 163309
ER -