Energy Storage Science and Technology ›› 2022, Vol. 11 ›› Issue (3): 957-963.doi: 10.19799/j.cnki.2095-4239.2022.0002

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Role of drying on the mechanical behavior of composite anodes

Dengfeng JIANG1(), Yajun CHEN2, Yaolong HE1,3,4(), Da BIAN1, Hongjiu HU1,3   

  1. 1.Shanghai Institute of Applied Mathematics and Mechanics, School of Mechanics and Engineering Science, Shanghai University, Shanghai 200072, China
    2.Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, Zhejiang, China
    3.Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai 200072, China
    4.Joint-Research Center for computational materials, Zhejiang Laboratory, Hangzhou 311100, Zhejiang, China
  • Received:2022-01-04 Revised:2022-01-15 Online:2022-03-05 Published:2022-03-11
  • Contact: Yaolong HE E-mail:dengfengjiang@shu.edu.cn;yaolonghe@shu.edu.cn

Abstract:

Carbon-coated SiOx composite anodes with different drying temperatures and binding systems, including poly(vinylidene fluoride) (PVDF), polymerized styrene butadiene rubber/carboxymethyl cellulose (SBR/CMC), and sodium alginate (SA), were prepared. Their quasi-static tensile and interfacial tensile-shear properties were thoroughly tested. The results showed that when the drying temperature increases, the elastic modulus, tensile strength, and interface tensile-shear strength of the active layer of each binding system gradually decrease. Among them, the ratio of tensile strength to elastic modulus of electrodes containing SBR/CMC is the highest. Additionally, its tensile-shear strength is also relatively less affected by temperature. The ratio of tensile strength to elastic modulus of electrodes with SBR/CMC is better suited for high-temperature drying than SA and PVDF systems.

Key words: drying, temperature, composite electrode, mechanical behavior, lithium-ion battery

CLC Number: