Ideal Bi‑Based Hybrid Anode Material for Ultrafast Charging of Sodium‑Ion Batteries at Extremely Low TemperaturesOA
Sodium-ion batteries have emerged as competitive substitutes for low-temperature applications due to severe capacity loss and safety concerns of lithium-ion batteries at−20°C or lower.However,the key capability of ultrafast charging at ultralow temperature for SIBs is rarely reported.Herein,a hybrid of Bi nanoparticles embedded in carbon nanorods is demonstrated as an ideal material to address this issue,which is synthesized via a high temperature shock method.Such a hybrid shows an unprecedented rate performance(237.9 mAh g^(−1) at 2 A g^(−1))at−60℃,outperforming all reported SIB anode materials.Coupled with a Na_(3)V_(2)(PO_(4))_(3)cathode,the energy density of the full cell can reach to 181.9 Wh kg^(−1) at−40°C.Based on this work,a novel strategy of high-rate activation is proposed to enhance performances of Bi-based materials in cryogenic conditions by creating new active sites for interfacial reaction under large current.
Jie Bai;Jian Hui Jia;Yu Wang;Chun Cheng Yang;Qing Jiang
Key Laboratory of Automobile Materials(Jilin University),Ministry of Education,School of Materials Science and Engineering,Jilin University,Changchun 130022,People’s Republic of ChinaKey Laboratory of Automobile Materials(Jilin University),Ministry of Education,School of Materials Science and Engineering,Jilin University,Changchun 130022,People’s Republic of ChinaKey Laboratory of Automobile Materials(Jilin University),Ministry of Education,School of Materials Science and Engineering,Jilin University,Changchun 130022,People’s Republic of ChinaKey Laboratory of Automobile Materials(Jilin University),Ministry of Education,School of Materials Science and Engineering,Jilin University,Changchun 130022,People’s Republic of ChinaKey Laboratory of Automobile Materials(Jilin University),Ministry of Education,School of Materials Science and Engineering,Jilin University,Changchun 130022,People’s Republic of China
动力与电气工程
Bi nanoparticlesHigh temperature shockHigh-rate activationUltrafast chargingLow-temperature sodium-ion batteries
《Nano-Micro Letters》 2025 (3)
P.152-167,16
supported from Science and Technology Development Program of Jilin Province(Nos.20240101128JC,20230402058GH)National Natural Science Foundation of China(No.52130101).
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