TY - JOUR
T1 - Scalable synthesis of Na3V2(PO4)3/C with high safety and ultrahigh-rate performance for sodium-ion batteries
AU - Cui, Guijia
AU - Wang, Hong
AU - Yu, Fengping
AU - Che, Haiying
AU - Liao, Xiaozhen
AU - Li, Linsen
AU - Yang, Weimin
AU - Ma, Zifeng
N1 - Publisher Copyright:
© 2021 Chemical Industry Press should be changed to Chemical Industry Press Co., Ltd
PY - 2022/6
Y1 - 2022/6
N2 - NASICON-type Na3V2(PO4)3 is a promising electrode material for developing advanced sodium-ion batteries. Preparing Na3V2(PO4)3 with good performance by a cost-effective and large-scale method is significant for industrial applications. In this work, a porous Na3V2(PO4)3/C cathode material with excellent electrochemical performance is successfully prepared by an agar-gel combined with freeze-drying method. The Na3V2(PO4)3/C cathode displayed specific capacities of 113.4 mAh·g−1, 107.0 mAh·g−1 and 87.1 mAh·g−1 at 0.1 C, 1 C and 10 C, respectively. For the first time, the 500-mAh soft-packed symmetrical sodium-ion batteries based on Na3V2(PO4)3/C electrodes are successfully fabricated. The 500-mAh symmetrical batteries exhibit outstanding low temperature performance with a capacity retention of 83% at 0 °C owing to the rapid sodium ion migration ability and structural stability of Na3V2(PO4)3/C. Moreover, the thermal runaway features are revealed by accelerating rate calorimetry (ARC) test for the first time. Thermal stability and safety of the symmetrical batteries are demonstrated to be better than lithium-ion batteries and some reported sodium-ion batteries. Our work makes it clear that the soft-packed symmetrical sodium ion batteries based on Na3V2(PO4)3/C have a prospect of practical application in high safety requirement fields.
AB - NASICON-type Na3V2(PO4)3 is a promising electrode material for developing advanced sodium-ion batteries. Preparing Na3V2(PO4)3 with good performance by a cost-effective and large-scale method is significant for industrial applications. In this work, a porous Na3V2(PO4)3/C cathode material with excellent electrochemical performance is successfully prepared by an agar-gel combined with freeze-drying method. The Na3V2(PO4)3/C cathode displayed specific capacities of 113.4 mAh·g−1, 107.0 mAh·g−1 and 87.1 mAh·g−1 at 0.1 C, 1 C and 10 C, respectively. For the first time, the 500-mAh soft-packed symmetrical sodium-ion batteries based on Na3V2(PO4)3/C electrodes are successfully fabricated. The 500-mAh symmetrical batteries exhibit outstanding low temperature performance with a capacity retention of 83% at 0 °C owing to the rapid sodium ion migration ability and structural stability of Na3V2(PO4)3/C. Moreover, the thermal runaway features are revealed by accelerating rate calorimetry (ARC) test for the first time. Thermal stability and safety of the symmetrical batteries are demonstrated to be better than lithium-ion batteries and some reported sodium-ion batteries. Our work makes it clear that the soft-packed symmetrical sodium ion batteries based on Na3V2(PO4)3/C have a prospect of practical application in high safety requirement fields.
KW - Accelerating rate calorimetry
KW - Battery thermal safety
KW - NaV(PO)/C
KW - Sodium-ion batteries
KW - Symmetrical battery
UR - https://www.scopus.com/pages/publications/85112593537
U2 - 10.1016/j.cjche.2021.06.008
DO - 10.1016/j.cjche.2021.06.008
M3 - Article
AN - SCOPUS:85112593537
SN - 1004-9541
VL - 46
SP - 280
EP - 286
JO - Chinese Journal of Chemical Engineering
JF - Chinese Journal of Chemical Engineering
ER -
