Morphology of Lithium-Containing Diblock Copolymer Thin Films

被引：12

作者：

Metwalli, Ezzeldin ^{[1
]}

Nie, Man ^{[1
,2
]}

Koerstgens, Volker ^{[1
]}

Perlich, Jan ^{[3
]}

Roth, Stephan V. ^{[3
]}

Mueller-Buschbaum, Peter ^{[1
]}

机构：

[1] Tech Univ Munich, Phys Dept E13, Lehrstuhl Funkt Mat, D-85747 Garching, Germany

[2] Beihang Univ, Dept Phys, Ctr Condensed Matter & Mat Phys, Beijing 100191, Peoples R China

[3] DESY, HASYLAB, D-22603 Hamburg, Germany

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2011年 / 212卷 / 16期

关键词：

block copolymers; GISAXS; lithium batteries; polyelectrolytes; thin films; X-RAY-SCATTERING; NANOCOMPOSITE POLYMER ELECTROLYTES; MOLECULAR-DYNAMICS SIMULATIONS; BLOCK-COPOLYMERS; ELECTROCHEMICAL PROPERTIES; MECHANICAL-PROPERTIES; CRYSTAL ORIENTATIONS; TRIBLOCK COPOLYMERS; IONIC-CONDUCTIVITY; PHASE-BEHAVIOR;

D O I：

10.1002/macp.201100112

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The morphology of block-copolymer, ion-conductive, electrolyte thin films is studied. Based on PS-b-PEO and the alkali salt Li[N(CF3SO2)(2)], hybrid structures are probed as a function of Li/PEO ratio. Using optical microscopy, AFM and grazing incidence SAXS, films of 50nm thickness are probed right after spin-coating. Below a critical Li/PEO weight ratio of 0.015, the crystallization of PEO is prohibited and nanostructured block copolymer films with Li incorporated in the PEO domains are obtained. In the range of 0.015> Li/PEO > 0.035, aggregation of Li salt on the polymer film surface occurs. Solvent-vapor annealing of such films further enriches the Li salt at the surface. For Li/PEO > 0.035, the electrolyte films become unstable and dewet on the surface of the silicon substrate.

引用

页码：1742 / 1750

页数：9

共 81 条

[1]

Abul Kashem M M, 2009, MACROMOLECULES, V42, P6202

[2] New macromolecules for solid polymeric electrolytes [J].

Allcock, HR ;

Napierala, ME ;

Olmeijer, DL ;

Cameron, CG ;

Kuharcik, SE ;

Reed, CS ;

O'Connor, SJM .

ELECTROCHIMICA ACTA, 1998, 43 (10-11) :1145-1150

[3] Synthesis of polyphosphazenes with ethyleneoxy-containing side groups: New solid electrolyte materials [J].

Allcock, HR ;

Kuharcik, SE ;

Reed, CS ;

Napierala, ME .

MACROMOLECULES, 1996, 29 (10) :3384-3389

[4] Hot-pressed, solvent-free, nanocomposite, PEO-based electrolyte membranes II.: All solid-state Li/LiFePO4 polymer batteries [J].

Appetecchi, GB ;

Hassoun, J ;

Scrosati, B ;

Croce, F ;

Cassel, F ;

Salomon, M .

JOURNAL OF POWER SOURCES, 2003, 124 (01) :246-253

[5] A new class of advanced polymer electrolytes and their relevance in plastic-like, rechargeable lithium batteries [J].

Appetecchi, GB ;

Dautzenberg, G ;

Scrosati, B .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (01) :6-12

[6]

Appetecchi GB, 1996, GAZZ CHIM ITAL, V126, P405

[7] Composite polymer electrolytes with improved lithium metal electrode interfacial properties - I. Electrochemical properties of dry PEO-LiX systems [J].

Appetecchi, GB ;

Croce, F ;

Dautzenberg, G ;

Mastragostino, M ;

Ronci, F ;

Scrosati, B ;

Soavi, F ;

Zanelli, A ;

Alessandrini, F ;

Prosini, PP .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1998, 145 (12) :4126-4132

[8]

BIONSKE PT, 1996, J COMPUT-AIDED MATER, V3, P385

[9] LiTFSI structure and transport in ethylene carbonate from molecular dynamics simulations [J].

Borodin, O ;

Smith, GD .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (10) :4971-4977

[10] Mechanism of ion transport in amorphous poly(ethylene oxide)/LiTFSI from molecular dynamics simulations [J].

Borodin, O ;

Smith, GD .

MACROMOLECULES, 2006, 39 (04) :1620-1629

← 1 2 3 4 5 6 7 8 9 →