多孔碳/铂/聚苯胺复合材料的制备及其电容性能研究

摘要：本文首先通过冷冻溶胶－凝胶法，制备出孔道结构较优的多孔碳材料（PC）（配方为间苯二酚1。2626g、糠醛1。920mL、叔丁醇13。0500mL、六亚甲基四胺[乌洛托品]0。0214g），再通过乙二醇原位还原氯铂酸，将生成的纳米铂颗粒与多孔碳原位复合，形成多孔碳/铂材料（PC/Pt）；接着将多孔碳/铂材料加入苯胺和硫酸的混合溶液中，利用纳米铂无电催化苯胺聚合，得到多孔碳/铂/聚苯胺复合材料（PC/Pt/PAN）。采用FTIR、SEM和BET对产物的结构和形貌进行了表征，结果表明：铂呈颗粒状存在于多孔碳的孔隙中，聚苯胺呈蠕虫状附着在多孔碳的孔隙中，且（PC/Pt/PAN）的比表面积与纯多孔碳相比明显增大。采用循环伏安、恒电流充放电和交流阻抗法对复合材料进行了电化学性能测试。结果表明：多孔碳炭/铂/聚苯胺复合材料在1mol L-1的H2SO4电解液中，0~1V电位范围内，表现出良好的电容性能：循环伏安曲线中呈现出明显的氧化还原峰；在1A g-1的电流密度下，的比电容达到168。4F g-1，高于纯多孔碳的比电容（111。6F g-1）；25次恒电流充放电后，PC/Pt/PAN比电容保留率为95。01%，表明其有优异的电化学循环稳定性能。93277

毕业论文关键词: 冷冻溶胶-凝胶法，多孔碳/铂/聚苯胺，电化学性能

Abstract：In this paper, a sort of excellent porous carbon (PC) were synthesized through the frozen sol-gel method ( The formula was that the dosage of the resorcinol, furfural, tert-butyl alcohol, six methylene tetramine [methenamine] were 1。2626 g, 1。920 mL, 13。0500 mL, 0。0214 g, respectively)。 PC/Pt materials were obtained by in situ reduction between chloroplatinic acid and glycol, during which process platinum nanoparticles were generated into the pore canal of PC。 Then, PC/Pt/PAN was acquired by adding PC/Pt to a mixture of aniline and sulfuric acid solution and using nano platinum to catalyze the polymerization of aniline。 The structure and morphology of the products were characterized by FT-IR, scanning electron microscopy (SEM) and BET methods。 Results showed that the granular platinum and the vermicular polyaniline existed in the pores of PC and the specific surface area of PC/Pt/PAN increased obviously compared with the pure PC。 The electrochemical performance of the products was tested by cyclic voltammetry, constant current charge-discharge and AC impedance methods。 The measurements showed that the PC/Pt/PAN materials in 1 mol·L-1 H2SO4 electrolyte and at the voltage range from 0 to 1 V indicated good capacitance performance。 The obvious oxidation-reduction peaks were found in CV curves。 In addition, under the current density of 1 A·g-1, the specific capacitance of PC/Pt/PAN was 168。4 F·g-1, which is better than that of pure PC (111。6F·g-1)。 The specific capacitance retention rate maintained at 95。01% after 25 cycles, indicating the excellent cycle stability performance of the PC/Pt/PAN composites。来自优O尔P论R文T网WWw.YoueRw.com 加QQ7520`18766

Keywords： Frozen sol-gel method, PC/Pt/PAN, Capacitive performance

1 前言 1

1。1 超级电容器简介 1

2 实验部分 2

2。1 实验试剂及仪器 2

2。1。1 实验试剂 2

2。1。2 实验仪器 3

2。2 电极材料的制备 3

2。2。1 多孔碳材料(PC)的制备和处理 3

2。2。2 多孔碳/纳米铂复合材料(PC/Pt)的制备 4 多孔碳/铂/聚苯胺复合材料的制备及其电容性能研究:http://www.youerw.com/huaxue/lunwen_201093.html