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Long Cycle Life and High-Rate Sodium Metal Batteries Enabled by an Active/Inactive Co-Sn alloy Interface
被引:8
作者:
Huang, Zhongyi
[1
]
Zheng, Xiaoyang
[2
]
Liu, Haoxuan
[3
]
Huang, Jiawen
[1
]
Xu, Yi
[1
]
Xu, Xun
[3
]
Dou, Yuhai
[4
]
Yuan, Ding
[4
]
Li, Zhen
[1
]
Dou, Shi-Xue
[3
,4
]
Liu, Hua-Kun
[3
,4
]
Chou, Shulei
[5
]
Wu, Chao
[1
,3
,4
]
机构:
[1] Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
[2] Univ Tsukuba, Grad Sch Pure & Appl Sci, 1-1-1 Tennodai, Tsukuba 3058573, Japan
[3] Univ Wollongong, Inst Superconducting & Elect Mat, Australian Inst Innovat Mat, Wollongong, NSW 2525, Australia
[4] Univ Shanghai Sci & Technol, Inst Energy Mat Sci IEMS, Shanghai 200093, Peoples R China
[5] Wenzhou Univ, Inst Carbon Neutralizat, Coll Chem & Mat Engn, Wenzhou 325035, Zhejiang, Peoples R China
基金:
中国国家自然科学基金;
澳大利亚研究理事会;
关键词:
active;
inactive interfaces;
alloy interfaces;
high current density;
high utilization;
sodium metal batteries;
ANODES;
D O I:
10.1002/adfm.202302062
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Sodium-metal batteries (SMBs) are considered as a promising route to realize a high energy density battery, showing potential for applications in large-scale energy storage. However, the cycling stability and reversibility of the Na-metal anode suffer from significant challenges because of the growth of Na dendrites. This study reports an active/inactive Co-Sn alloy interface to suppress the growth of Na dendrites under harsh test conditions. In this interface, Sn provides abundant nucleation sites and Co plays a synergistic role in alleviating volume variation of Sn nanoparticles and increasing the interaction between Na and substrate, significantly promoting the uniform Na deposition and preventing the Na plating from the root of the deposited Na. Under High-current-density (12 mA cm(-2)) with a high depth of discharge (DOD, 66.67%), Na||Na can achieve stable cycling for over 4200 h at 4 mA h cm(-2). When paired with a high-loading NaTi2(PO4)(3) cathode (10 mg cm(-2)), SMB delivers an excellent performance (800 cycles) at a negative-to-positive electrode capacity (N/P) ratio up to 2.
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页数:9
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