纳米阻燃氢氧化镁/聚氧化乙烯复合聚合物电解质

doi:10.3866/PKU.WHXB20100818

Abstract

Abstract:

We prepared nanosized hydroxide magnesium (Mg(OH)₂) as a plasticizer and a flame-retarding additive for a poly(ethylene-oxide) (PEO) based polymer electrolyte. We characterized the prepared compound using transition electron microscopy (TEM), X-ray diffraction (XRD), and thermogravimetry (TG). The prepared hydroxide magnesium particles are hexagonal crystals with sizes of 50-80 nm. The decomposition of the prepared nanosized hydroxide magnesium started at 340 ℃. Electrochemical measurements shows that the ionic conductivity of the Mg(OH)₂/PEO composite polymer electrolytes (CPEs) increases initially and then decreases with an increase in hydroxide magnesium content. It reaches a maximum when the hydroxide magnesium mass fraction is between 5% and 10%. The anodic decomposition potential of the CPEs increases to a certain extent as the hydroxide magnesium content increases. Hydroxide magnesiumhas a positive influence on the electrochemical stability of PEO.

Key words: Lithiumion battery, Nanosized hydroxide magnesium, Flame-retarding, Poly(ethylene-oxide), Polymer electrolyte

LI Ya-Juan, ZHAN Hui, LIU Su-Qin, HUANG Ke-Long, ZHOU Yun-Hong. Nanosized Flame Retarded HydroxideMagnesium/Poly(ethylene-oxide) Composite Polymer Electrolyte[J]. Acta Phys. -Chim. Sin. 2010, 26(09), 2387-2391. doi: 10.3866/PKU.WHXB20100818

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Nanosized Flame Retarded HydroxideMagnesium/Poly(ethylene-oxide) Composite Polymer Electrolyte

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