(中南大學 粉末冶金國家重點實驗室，長沙 410083)
摘 要: 以添加5%(質(zhì)量分數(shù))硼酸的呋喃樹脂為前驅(qū)體，經(jīng)炭化后進行高溫(2 000和3 000 ℃)熱處理，制備摻硼呋喃樹脂炭。采用XRD、Raman、XPS和SEM考察樣品的物相組成、微觀結(jié)構(gòu)和表面形貌；采用恒流充放電技術(shù)研究樣品的電化學性能。結(jié)果表明：摻硼明顯促進樹脂炭的石墨化，并改變其表面形貌；樹脂炭的可逆容量與XRD、Raman測得的結(jié)構(gòu)參數(shù)密切相關(guān)，有序度越高，微晶尺寸越大，此時其可逆容量也越大；3 000 ℃處理的摻硼樹脂炭有序度高，微晶尺寸大，La和Lc分別為25.93和27.17nm，此時其可逆容量最高，約為310 mA?h/g，且循環(huán)50次后無容量衰減。
關(guān)鍵字: 負極材料；摻硼；呋喃樹脂炭；電化學性能
（National Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China）
Abstract:Boron-doped 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.
Key words: anode materials; boron doping; furan resin carbons; electrochemical properties
