Wang Zijie, Perera Wijayantha A, Perananthan Sahila, Ferraris John P, Balkus Kenneth J
Department of Chemistry and Biochemistry, The University of Texas at Dallas, 800 West Campbell Road, Richardson, Texas 75080-3021, United States.
ACS Omega. 2018 Oct 23;3(10):13913-13918. doi: 10.1021/acsomega.8b01714. eCollection 2018 Oct 31.
Lanthanum hydroxide nanorods were employed as both a template and catalyst for carbon synthesis by chemical vapor deposition. The resulting carbon possesses hollow nanorod shapes with graphitic walls. The hollow carbon nanorods were interconnected at some junctions forming a mazelike network, and the broken ends of the tubular carbon provide accessibility to the inner surface of the carbon, resulting in a surface area of 771 m/g. The hollow carbon was tested as an electrode material for supercapacitors. A specific capacitance of 128 F/g, an energy density of 55 Wh/kg, and a power density of 1700 W/kg at 1 A/g were obtained using the ionic liquid, 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, as the electrolyte.
氢氧化镧纳米棒被用作化学气相沉积法合成碳的模板和催化剂。所得的碳具有带石墨壁的中空纳米棒形状。中空碳纳米棒在一些节点处相互连接形成迷宫状网络，管状碳的断裂末端使碳的内表面易于接触，从而得到表面积为771平方米/克的材料。这种中空碳被测试用作超级电容器的电极材料。使用离子液体1-乙基-3-甲基咪唑双（三氟甲基磺酰）亚胺作为电解质，在1A/克的电流密度下，获得了128F/克的比电容、55Wh/千克的能量密度和1700W/千克的功率密度。
