Promotion of Interface Fusion of Solid Polymer Electrolyte and Cathode by Ultrasonic Vibration

被引:4
|
作者
Wang, Hui [1 ,2 ]
Ke, Haoran [1 ]
Chen, Yizhe [1 ,2 ]
Wang, Jinhuo [3 ]
Yan, Fei [4 ]
Cui, Xiaodong [2 ]
机构
[1] Wuhan Univ Technol, Hubei Key Lab Adv Technol Automot Components, Wuhan 430070, Peoples R China
[2] Hubei Collaborat Innovat Ctr Automot Components T, Wuhan 430070, Peoples R China
[3] Xiamen Univ Technol, Fujian Key Lab Funct Mat & Applicat, Xiamen 361024, Peoples R China
[4] Wuhan Univ Technol, Hubei Res Ctr New Energy Intelligent Connected Ve, Wuhan 430070, Peoples R China
关键词
solid polymer electrolyte; ultrasonic fusion; interface resistance; wireless sensors; COMPOSITES;
D O I
10.3390/s22051814
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
All-solid-state polymer lithium batteries have good safety, stability, and high energy densities and are employed in wireless sensors. However, the solid contact between the polymer electrolyte and the cathode leads to high interface resistance, limiting the broad application of solid-state lithium batteries. This paper proposes an ultrasonic fusion method to reduce the interface resistance between the polymer electrolyte and the cathode. The method applied a high-frequency ultrasonic vibration technique to impact the polymer electrolyte/cathode structure, melting the electrolyte at the interface and thus generating good contact at the interface. The experimental results showed that the ultrasonic fusion method decreased the interface resistance between the polymer electrolyte and the cathode by 96.2%. During the ultrasonic fusion process, high-frequency ultrasonic vibrations generated high temperatures at the interface, and the polymer electrolyte became molten, improving the contact between the electrolyte and the cathode. The ultrasonic fusion method eliminated the gaps at the interface, and the interface became more compact. Furthermore, ultrasonic vibrations made the molten electrolyte fill the holes in the cathode, and the contact area was enhanced, providing more Li+ ions transmission paths.
引用
收藏
页数:16
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