研究目的
Investigating the effects of nano-Al2O3 doping on the morphology, pore size distribution, thermal, electrochemical, and mechanical properties of porous polymer electrolytes (PPEs) for lithium-ion batteries.
研究成果
The addition of nano-Al2O3 improves the structure, pore size distribution, interfacial performance, and tensile strength of PPEs without compromising their conductivity. The PPEs with 10% Al2O3 showed a total resistance of only 9 Ω at 80 °C and a maximum tensile strength of 24.43 MPa, indicating good potential for application in lithium-ion batteries.
研究不足
The study focuses on the effects of nano-Al2O3 doping on PPEs and does not explore the long-term stability or performance under cycling conditions in lithium-ion batteries.
1：Experimental Design and Method Selection:
PPEs were prepared by a joint application of ultrasonic treatment and control evaporation in a vacuum oven. The mixture of PMMA, PEO, LiClO4, and Al2O3 was dissolved in THF, stirred, ultrasonically dispersed, cast on a Petri dish, and dried under controlled conditions.
2：Sample Selection and Data Sources:
The morphology, pore size distribution, thermal, electrochemical, and mechanical properties of the PPEs were investigated using SEM, FTIR, TG, DTA, and electrochemical impedance spectroscopy.
3：List of Experimental Equipment and Materials:
SEM (JSM 6360LV), FTIR (Nicolet 6700), TG (Netzsch-STA 409), electromechanical testing machine (MTS Insight), and electrochemical workstation (Beijing Huake Apparatus).
4：Experimental Procedures and Operational Workflow:
The solution was cast on a Petri dish, allowed to evaporate slowly in the air, and then dried in a vacuum oven. The membranes were characterized for their properties.
5：Data Analysis Methods:
The data were analyzed to determine the effects of Al2O3 doping on the properties of PPEs.
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