以添加5%(质量分数)硼酸的呋喃树脂为前驱体，经炭化后进行高温(2000和3000℃)热处理，制备掺硼呋喃树脂炭。采用 XRD、Raman、XPS 和 SEM 考察样品的物相组成、微观结构和表面形貌；采用恒流充放电技术研究样品的电化学性能。结果表明：掺硼明显促进树脂炭的石墨化，并改变其表面形貌；树脂炭的可逆容量与XRD、Raman 测得的结构参数密切相关，有序度越高，微晶尺寸越大，此时其可逆容量也越大；3000℃处理的掺硼树脂炭有序度高，微晶尺寸大，La 和 Lc 分别为25.93和27.17nm，此时其可逆容量最高，约为310 mA∙h/g，且循环50次后无容量衰减。%Borondoped furan resin carbons were prepared by high temperature (2 000 and 3 000 ℃) treatment furan resin containing 5% (mass fraction) boric acid after carbonization. The phase composition, microstructure and surface morphology of furan resin carbons were investigated by XRD, Raman spectroscopy, XPS and SEM. Electrochemical behaviors of samples were studied by galvanostatic charge/discharge test. The results indicate that boron doping exhibits catalytic graphitization effect and brings evident different morphologies. The electrode reversible capacity is closely correlated with crystal parameters of the materials by XRD and Raman. The larger the structure order is, the crystallite the size is, the higher the reversible capacity is. The boron doping furan resin carbon prepared at 3 000 ℃ obtains high structure order and crystal orientation with La and Lc reaching 25.93 and 27.17 nm, respectively, and shows high reversible capacity of about 310 mA∙h/g and no capacity fading after 50 cycles.
展开▼
