Graphite intercalation of bis(trifluoromethanesulfonyl) imide and other anions with perfluoroalkanesulfonyl substituents

被引：89

作者：

Zhang, XR

Sukpirom, N

Lerner, MM

机构：

[1] Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA

[2] Oregon State Univ, Adv Mat Res Ctr, Corvallis, OR 97331 USA

来源：

MATERIALS RESEARCH BULLETIN | 1999年 / 34卷 / 03期

基金：

美国国家科学基金会;

关键词：

layered compounds; intercalation reactions; X-ray diffraction;

D O I：

10.1016/S0025-5408(99)00035-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Graphite intercalation compounds (GICs) containing the bis(trifluoromethanesulfonyl) imide anion, CxN(SO2CF3)(2), were prepared under ambient conditions in 48% hydrofluoric acid, using the oxidant K2MnF6. Within seconds, the graphite phase was no longer observed, and a stable, stage 2 product with x = 37 and d(i) = 8.1 Angstrom was obtained in 15 min. Product compositions were evaluated by powder X-ray diffraction (PXRD), thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and elemental analyses. One-dimensional structural refinement for the stage 2 product provided values for the graphene carbon/intercalant molar ratio, distance between graphene and sulfonate oxygen planes, and the anion orientation within the intercalated galleries. Intercalation reactions with the larger fluoroanions bis(pentafluoroethanesulfonyl) imide (CF3CF2SO2)(2)N-, trifluoromethanesulfonyl-n-nona-fluorobutanesulfonyl imide (CF3SO2)(CF3(CF2)(3)SO2)N-, and tris (trifluoromethanesulfonyl) methide (CF3SO2)(3)C- occurred but were dramatically slower. For each product, stages and d(i) were determined for the mixed phase products. In all cases with the larger anions, the products obtained also contained unreacted graphite, (C) 1999 Elsevier Science Ltd.

引用

页码：363 / 372

页数：10

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