Porous silica-based anode materials with high theoretical specific capacity and abundant reserves have attracted popular attention for application in lithium ion batteries (LIBs). However, poor electrochemical conductivity and mechanical performance hinder the development of silica-based anode materials. In this work, attapulgite/multi-walled carbon nanotube (AT/CNT) composite anode materials were prepared. The structural features of AT/CNT composite aerogels were characterized by field emission scanning electron microscopy (FESEM), energy dispersive spectroscopy (EDS), x-ray diffraction (XRD) and Brunauer–Emmett–Teller (BET). because of the excellent conductivity and porous pathways of AT/CNT anode material, the reversible specific capacity of AT/CNTs containing 0.5 wt.% CNTs (AT-0.5) with a mass loading of 0.67 mg cm⁻² was 303.6 mAh g⁻¹ at 0.1 A g⁻¹ after 50 cycles, and a coulombic efficiency of AT-0.5 was 99.1%. The green LEDs were lit by the assembled battery of AT-0.5. The electrochemical results demonstrated that AT/CNT anode materials possessed practical application values for energy storage. Moreover, the preparation method of AT/CNT anode materials is efficient and environmentally friendly.

中文翻译：

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凹凸棒石/多壁碳纳米管气凝胶作为锂离子电池负极材料的制备

具有高理论比容量和丰富储备的多孔二氧化硅基负极材料在锂离子电池（LIB）中的应用引起了广泛的关注。但是，差的电化学电导率和机械性能阻碍了二氧化硅基负极材料的发展。在这项工作中，制备了凹凸棒石/多壁碳纳米管（AT / CNT）复合阳极材料。AT / CNT复合气凝胶的结构特征通过场发射扫描电子显微镜（FESEM），能量色散谱（EDS），X射线衍射（XRD）和Brunauer-Emmett-Teller（BET）表征。由于AT / CNT阳极材料具有出色的导电性和多孔通道，因此含有质量分数为0.67 mg cm ^-2的0.5％（重量）的CNT（AT-0.5）的AT / CNT的可逆比容量为303.6毫安克^-1在0.1 A克^-1 50个循环，和AT-0.5的库伦效率后为99.1％。绿色LED指示灯由AT-0.5的电池组点亮。电化学结果表明，AT / CNT阳极材料具有实用的储能应用价值。而且，AT / CNT阳极材料的制备方法是高效且环境友好的。