A comparative structural study of ternary graphite intercalation compounds containing alkali metals and linear or branched amines

作者：Maluangnont Tosapol; Sirisaksoontorn Weekit; Lerner Michael M^*

来源：Carbon, 2012, 50(2): 597-602.

DOI：10.1016/j.carbon.2011.09.018

New donor-type ternary graphite intercalation compounds (GICs) containing alkali metals and branched amines are prepared by direct reaction of graphite with the alkali metal and amine. The new GICs include M(iC3)(0.4)C(15-18) (M = Li, Na; iC3 = iso-propylamine; d(i), = 0.76 nm) with a monolayer intercalate arrangement; and Na(sC4)(1.6)C(18) (sC4 = sec-butylamine; d(i) = 1.34 nm) and Na(iC4)(2.0)C(28) (iC4 = iso-butylamine; d(i) = 1.28 nm) with bilayer arrangements. Li-sC4-GIC and K-iC3-GIC are not formed using this reaction chemistry. M-iC3-GICs show galleries expanded by 0.06 nm more than that for M(nC3)(0.7-0.8)C(16) (M = Li, Na; nC3 = n-propylamine). Unlike the case of rigid-sheet hosts where branched amines intercalate at a lower rate and with lower amine content, M-sC4-GICs and M-iC4-GIC5 readily form intercalate bilayers.

• 出版日期2012-2