Fabrication of poly (vinyl alcohol)/graphene nanocomposite foam based on solid state shearing milling and supercritical fluid technology

2017 ◽  
Vol 134 ◽  
pp. 121-131 ◽  
Author(s):  
Pengju Liu ◽  
Wenhua Chen ◽  
Yingbin Jia ◽  
Shibing Bai ◽  
Qi Wang
Keyword(s):  
Solid State ◽  
Supercritical Fluid ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Supercritical Fluid Technology ◽  
Graphene Nanocomposite ◽  
Nanocomposite Foam

Structural study of poly(vinyl alcohol) in the gel state by high-resolution solid-state 13C NMR spectroscopy

1995 ◽  
Vol 28 (19) ◽  
pp. 6677-6679 ◽  
Author(s):  
Masatoshi Kobayashi ◽  
Isao Ando ◽  
Takahiro Ishii ◽  
Shigetoshi Amiya
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
High Resolution ◽  
Structural Study ◽  
13C Nmr ◽  
Vinyl Alcohol ◽  
13C Nmr Spectroscopy ◽  
Poly Vinyl Alcohol ◽  
Solid State 13C Nmr

Cellulose and poly(vinyl alcohol) composite gels as separators for quasi-solid-state electric double layer capacitors

Cellulose ◽  
2018 ◽  
Vol 26 (2) ◽  
pp. 1055-1065 ◽  
Author(s):  
Yongsheng Ji ◽  
Na Liang ◽  
Jing Xu ◽  
Danying Zuo ◽  
Dongzhi Chen ◽  
...  
Keyword(s):  
Solid State ◽  
Double Layer ◽  
Vinyl Alcohol ◽  
Electric Double Layer ◽  
Poly Vinyl Alcohol ◽  
Composite Gels ◽  
Double Layer Capacitors ◽  
Electric Double Layer Capacitors

scholarly journals Mechanical Integrity Degradation and Control of All-Solid-State Lithium Battery with Physical Aging Poly (Vinyl Alcohol)-Based Electrolyte

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 1886
Author(s):  
Yaolong He ◽  
Shufeng Li ◽  
Sihao Zhou ◽  
Hongjiu Hu
Keyword(s):  
Solid State ◽  
Aging Time ◽  
Vinyl Alcohol ◽  
Physical Aging ◽  
Rupture Strength ◽  
Superposition Principle ◽  
Solid Polymer ◽  
Poly Vinyl Alcohol ◽  
Characteristic Relaxation Time ◽  
Mechanical Integrity

Ensuring the material durability of an electrolyte is a prerequisite for the long-term service of all-solid-state batteries (ASSBs). Herein, to investigate the mechanical integrity of a solid polymer electrolyte (SPE) in an ASSB upon electrochemical operation, we have implemented a sequence of quasi-static uniaxial tension and stress relaxation tests on a lithium perchlorate-doped poly (vinyl alcohol) electrolyte, and then discussed the viscoelastic behavior as well as the strength of SPE film during the physical aging process. On this basis, a continuum electrochemical-mechanical model is established to evaluate the stress evolution and mechanical detriment of aging electrolytes in an ASSB at a discharge state. It is found that the measured elastic modulus, yield stress, and characteristic relaxation time boost with the prolonged aging time. Meanwhile, the shape factor for the classical time-decay equation and the tensile rupture strength are independent of the aging history. Accordingly, the momentary relaxation modulus can be predicted in terms of the time–aging time superposition principle. Furthermore, the peak tensile stress in SPE film for the full discharged ASSB will significantly increase as the aging proceeds due to the stiffening of the electrolyte composite. It may result in the structure failure of the cell system. However, this negative effect can be suppressed by the suggested method, which is given by a 2D map under different lithiation rates and relative thicknesses of the electrolyte. These findings can advance the knowledge of SPE degradation and provide insights into reliable all-solid-state electrochemical device applications.

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