Preparation and characterization of PEO-PMMA polymer composite electrolytes doped with nano-Al2O3

Autor:	Xu Chen, Xuehui Yan, Liang Bo, Jiang Qingbai, Li Shengliang, Siqi Tang, Chuangsheng Chen
Rok vydání:	2015
Předmět:	chemistry.chemical_classification Materials science General Chemical Engineering Composite number Inorganic chemistry chemistry.chemical_element Electrolyte Polymer Electrochemistry Membrane chemistry Chemical engineering Ultimate tensile strength Ionic conductivity Lithium
Zdroj:	Electrochimica Acta. 169:334-341
ISSN:	0013-4686
DOI:	10.1016/j.electacta.2015.04.039
Popis:	This paper presents the preparation and characterization of a series of PEO-PMMA composites containing different lithium salts (LiClO4 or LiTFSI) with or without nano-Al2O3. Nano-Al2O3 is added to the polymer electrolytes to alter the morphology, ionic conductivity, interfacial and thermal shrinkage properties. Nano-Al2O3 can effectively improve the stability of the polymer electrolyte membrane interface. The tensile strength of the PEO-PMMA-LiTFSI-Al2O3 electrolyte membrane is 3.24 MPa at room temperature. The study shows that the ion conductivities at room temperature for PEO-PMMA-LiTFSI (EO/Li+ = 10) and PEO-PMMA-LiTFSI-Al2O3 (EO/Li+ = 10) are 6.71 × 10−7 S/cm and 9.39 × 10−7 S/cm, respectively. A good dimensional stability was observed for PEO-PMMA-LiTFSI with a thermal shrinkage of 8.7%. The electrochemical windows of PEO-PMMA-LiTFSI and PEO-PMMA-LiTFSI-Al2O3 are all stable up to 4.6 V versus Li+/Li, which makes them good electrolyte candidates of lithium ion batteries with high-potential cathodes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c0ebcd90815a93551163ef93c879e94e https://doi.org/10.1016/j.electacta.2015.04.039 Zobrazit plný text záznamu Full Text from ScienceDirect