Scalable synthesis of Na3V2(PO4)3/C with high safety and ultrahigh-rate performance for sodium-ion batteries
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Scalable synthesis of Na3V2(PO4)3/C with high safety and ultrahigh-rate performance for sodium-ion batteries
Scalable synthesis of Na3V2(PO4)3/C with high safety and ultrahigh-rate performance for sodium-ion batteries
中国化学工程学报(英文版)2022年46卷第6期 页码:280-286
Affiliations:
1. Department of Chemical Engineering, Shanghai Electrochemical Energy Devices Research Center, Shanghai Jiao Tong University,Shanghai,China,200240
2. SINOPEC Shanghai Research Institute of Petrochemical Technology,Shanghai,China,201208
3. Zhejiang NaTRIUM Energy Co. Ltd.,Shaoxing,China,312000
Author bio:
Funds:
DOI:
中图分类号:
纸质出版:2022
Accepted:
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Guijia Cui, Hong Wang, Fengping Yu, 等. Scalable synthesis of Na3V2(PO4)3/C with high safety and ultrahigh-rate performance for sodium-ion batteries[J]. 中国化学工程学报(英文版), 2022,46(6):280-286.
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Guijia Cui, Hong Wang, Fengping Yu, 等. Scalable synthesis of Na3V2(PO4)3/C with high safety and ultrahigh-rate performance for sodium-ion batteries[J]. 中国化学工程学报(英文版), 2022,46(6):280-286.DOI:
VDOI:
Scalable synthesis of Na3V2(PO4)3/C with high safety and ultrahigh-rate performance for sodium-ion batteries
is a promising electrode material for developing advanced sodium-ion batteries. Preparing Na
3
V
2
(PO
4
)
3
with good performance by a cost-effective and large-scale method is significant for industrial applications. In this work
a porous Na
3
V
2
(PO
4
)
3
/C cathode material with excellent electrochemical performance is successfully prepared by an agar-gel combined with freeze-drying method. The Na
3
V
2
(PO
4
)
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 Na
3
V
2
(PO
4
)
3
/C electrodes are successfully fabricated. The 500-mAh symmetrical batteries exhibit outstanding low temperature performance with a capacity retention of 83% at 0 ℃ owing to the rapid sodium ion migration ability and structural stability of Na
3
V
2
(PO
4
)
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 sodi
um-ion batteries. Our work makes it clear that the soft-packed symmetrical sodium ion batteries based on Na
3
V
2
(PO
4
)
3
/C have a prospect of practical application in high safety requirement fields.
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