糠醇树脂炭化产物作为锂离子电池炭电极材料的研究(I)——炭化产物的组成和结构参数测试分析

STUDY ON THE CARBONIZED PRODUCT OF FURFURALCOHOL RESIN AS ELECTRODE MATERIALS OF LITHIUM ION BATTERIES(I)— TEST AND ANALYSIS OF THE ELEMENTARY COMPOSITION AND STRUCTURAL PARAMETER OF THE CARBONIZED PRODUCT

测试分析了炭化处理条件对糠醇树脂炭化产物组成和结构的影响。结果表明 :糠醇树脂炭化裂解过程首先是五员杂环内的碳氧键发生断裂 ,引起碳氢键断裂。然后经过重排又转变成了一个具有碳碳双键的六员环体系 ,并在此基础上进一步发生脱氢反应。还原性气氛中 ,经 62 0℃炭化处理的样品出现了明显尖锐的 (1 0 0 )晶面特征衍射峰 ,同时还发现了 (1 1 0 )和 (0 0 6)晶面特征衍射峰 ,表明糠醇树脂是一种较易石墨化的树脂材料。炭化样品比表面积均随着处理温度升高而下降。还原性气氛中 70 0℃和 1 0 0 0℃炭化处理的样品与 62 0℃炭化处理的样品相比 ,比表面积分别下降了约 1 1 .2 %和 35.2 %。处理气氛对炭化产物比表面积的影响表现得更为显著。 70 0℃惰性气氛中炭化处理的样品与还原性气氛中处理的样品相比 ,比表面积降低了约 61 .5%。

Furfuralcohol resin was carbonized to make carbon materials. The elements and structure of resin carbon materials were analyzed. Results showed that during the carbonization of furfuralcohol resin C O bond rupture of pentacyclic ring, took place firstly, bringine C H bond rupture. Then a hexacyclic ring system formed as a result of molecular recombination, based on which further dehydrogenation occurred. In the resin carbon materials treated at 620 ℃ the (100) crystal plane diffraction peek appeared evidently, at the same time the (110) and (006) crystal plane diffraction peeks also appeared. It means that the furfuralcohol resin is a type of facility graphitisable material. The specific surface area of the resin carbon declined with the increase of treatment temperature . As compared with the sample treated at 620 ℃, the specific surfaces area of samples treated at 700 ℃ and 1 000 ℃ descended about 11.2 % and 35.2 % respectively. The treating ambience affected the specific surface area of resin carbon material more remarkably. As compared with the sample treated at 700 ℃ in reducing atmosphere, the specific surfaces area of samples treated at 700 ℃ in inert one descended about 61.5 %.