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采用液相共沉积法合成了 RuO2/AC 复合电极材料,用扫描电镜对不同导电剂材料的形貌进行表征,进而通过循环伏安法、恒流充放电、交流阻抗谱研究了不同导电剂对RuO2/AC 复合电极材料超级电容器性能的影响.结果表明,在38%(质量分数)的H2 SO4溶液中,电流密度为2 mA/cm2,以 CNTs、AB、KS6、Super P Li 为导电剂时比容量和 ESR 分别为689,556,574和512 F/g,0.19,0.36,0.32和0.41Ω.

Amorphous hydrous ruthenium oxide/active carbon composite electrode materials prepared by the liq-uid phase codeposition.The morphology of the conductive agents were investigated by SEM.Based on the cyclic voltammetry,AC impedance spectroscopy and constant current charge-discharge techniques,the performances of the RuO2/AC composite electrodes materials which add different conductive agent are investigated.The re-sults show that when CNTs,AB,KS6 and Super P Li were used as conductive agent,the materials specific ca-pacitance of RuO2/AC composite electrodes was 689,556,574 and 512 F/g,respectively,the equivalent series resistance was 0.19,0.36,0.32 and 0.41 Ω,measured at 5 mV/s in 38% (mass fraction)H2SO4 and under the current density of 2 mA/cm2 .

参考文献

[1] 唐致远,耿新,王占良,徐国祥.金属氧化物电化学电容器[J].化学通报,2003(01):33-38.
[2] Chi-Chang Hu;Chen-Ching Wang;Kuo-Hsin Chang .A comparison study of the capacitive behavior for sol-gel-derived and co-annealed ruthenium-tin oxide composites[J].Electrochimica Acta,2007(7):2691-2700.
[3] Tanahashi I;Yoshida A;Nishino A .Electrochemical characterization of activated carbon-fiber cloth polarizable electrodes for electric double-layer capacitors[J].J Elec-trochem Soc,1990,137(10):3052-3057.
[4] Conway B E .Transition from “supercapacitor”to“battery”behavior in electrochemical energy storage[J].J Electrochem Soc,1991,138(06):1539-1548.
[5] Chemical Reviews Group .What Are Batteries,Fuel Cells,and Supercapacitors?[J].Chemical Reviews,2004(10):4245-4269.
[6] Katsuhiko Naoi;Shuichi Ishimoto;Nobuhiro Ogihara .Encapsulation of Nanodot Ruthenium Oxide into KB for Electrochemical Capacitors[J].Journal of the Electrochemical Society,2009(1):A52-A59.
[7] Zheng JP.;Jow TR.;Cygan PJ. .HYDROUS RUTHENIUM OXIDE AS AN ELECTRODE MATERIAL FOR ELECTROCHEMICAL CAPACITORS[J].Journal of the Electrochemical Society,1995(8):2699-2703.
[8] Wu Z S;Wang D W;Ren W et al.Anchoring hydrous RuO2 on graphene sheets for high-performance electro-chemical capacitors[J].Advanced Functional Materials,2010(20):3595-3602.
[9] Kim H;Popov B N .Characterization of hydrous rutheni-um oxide/carbon nanocomposite supercapacitors prepared by a colloidal method[J].Journal of Power Sources,2002,104(01):52-61.
[10] Rosario A V;Bulhoes L O S;Pereira E C .Investigation of pseudocapacitive properties of RuO2 film electrodes prepared by polymeric precursor method[J].Journal of Power Sources,2006,158(01):795-800.
[11] 王杰,徐友龙,马建华,张选红,蒙林斌,石洪富,蒋春强,彭丹.循环伏安沉积纳米氧化钌基超级电容器电极材料[J].稀有金属材料与工程,2012(08):1467-1471.
[12] Stoller M D;Ruoff R S .Best practice methods for deter-mining an electrode material's performance for ultraca-pacitors[J].Energy & Environmental Science,2010,3(09):1294-1301.
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