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题名: Selective transporting of lithium ion by shape selective molecular sieves ZSM-5 in PEO-based composite polymer electrolyte
作者: Xi, JY;  Miao, SJ;  Tang, XZ
刊名: MACROMOLECULES
发表日期: 2004-11-16
DOI: 10.1021/ma048849d
卷: 37, 期:23, 页:8592-8598
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Polymer Science
研究领域[WOS]: Polymer Science
英文摘要: To elucidate the mechanism of the enhancement of lithium ion transference numbers, TLi+, induced by ZSM-5 in PEO-based composite polymer electrolyte, different types of other fillers, such as ceramic fillers (SiO2 and Al2O3), solid superacid (SO4 (2-)/ZrO2), layered materials (montmorillonite), and mesoporous materials (MCM-41, HMS, and SBA-15), are selected to compare with ZSM-5 molecular sieves. The experimental results suggest that ZSM-5 may enhance the TLi+ of PEO-based composite polymer electrolytes in three ways: (1) Lewis acid-base interactions, resulting in the release of more "free" Li+ cations; (2) selective passing of Li+ cations due to the special pore size of ZSM-5 and electrostatic repulsion for ClO4- anions due to the negative environment in the channels of ZSM-5; (3) the cation-exchange centers in the framework of ZSM-5, suggesting that the Li+ cation can be ion-exchanged into the channels for charge balance, namely, provide a special conducting pathway for Li+ cation. In addition, room temperature ionic conductivity of the composite polymer electrolyte can also be increased by about 2 orders of magnitude. The high lithium ion transference numbers combined with a suitable ionic conductivity of PEO-LiClO4-ZSM5 composite polymer electrolyte suggest that it can be used as candidate electrolyte material for all solid-state rechargeable lithium polymer batteries.
关键词[WOS]: MESOPOROUS SILICA ;  POLY(ETHYLENE OXIDE) ;  SULFATED-ZIRCONIA ;  ELECTROCHEMICAL PROPERTIES ;  NANOCOMPOSITE ;  BATTERIES ;  CONDUCTIVITY ;  CATALYSTS ;  FILLERS ;  ISOMERIZATION
语种: 英语
WOS记录号: WOS:000225056800017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139305
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Shanghai Jiao Tong Univ, Sch Chem & Chem Technol, Shanghai 200240, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Xi, JY,Miao, SJ,Tang, XZ. Selective transporting of lithium ion by shape selective molecular sieves ZSM-5 in PEO-based composite polymer electrolyte[J]. MACROMOLECULES,2004,37(23):8592-8598.
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