由废弃离子交换树脂制备多孔碳纳米片及其储锂性能研究
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摘要
离子交换树脂在水处理、食品行业、制药、合成化学及石油化工等行业已经得到了广泛的应用,同时每年也产生大量的废弃树脂。这些废弃树脂性质十分稳定,难以降解,其对环境的影响已经引起了人们的广泛关注~([1,2])。消除废旧树脂对环境的影响并将其转化为高附加值材料成为广大研究者面临的严峻挑战。本工作以废弃的丙烯酸树脂为碳源,通过催化碳化和活化制备得到了多孔碳纳米片。这些碳纳米片兼有比表面积大与石墨化程度高的优点。用作锂电池阳极材料,碳纳米片的高石墨化程度可以显著提高电极材料的电子迁移率,其片状结构缩短了锂离子的传输距离,高的比表面积有利于更多锂离子的存储,从而展现出优异的锂电性能。本工作为实现废弃树脂的处理和高附加值利用提供了一种新思路。
Currently, ion exchange resins have been widely used in various industry processes, such as the water treatment, food industry, medicine production, chemical synthesis and oil chemical engineering. Therefore, large amounts of spent resins are produced annually. The non-degradable property and robust stability of the spent ion exchange resins make a great impact on the environment~([1,2]). The treatment and high value-added application of the spent resin become a big challenge. Herein, acrylic resin is used as the carbon source to produce carbon materials via catalytic carbonization and activation in one step. Interestingly, sheet-like carbon materials is prepared. The as-prepared carbon nanosheets exhibit both large specific surface area and high graphitization degree. When used as an anode material for lithium ion battery, this carbon nanosheets realize an excellent performance due to their superior properties. This work demonstrates a high value-added application of spent ion exchange resins.
引文
[1]C.Long,J.Lu,A.Li,D.Hu,F.Liu and Q.Zhang,Journal of Hazardous Materials,2008,150,656-661.
    [2]K.Bratek,W.Bratek and M.Ku?a?yński,Carbon,2002,40,2213-2220.

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