以金属有机骨架材料HKUST-1为模板制备多孔聚苯胺电极及其超级电容器性能研究  

Electrochemical Synthesis of Porous Polyaniline Electrodes Using HKUST-1 as a Template and Their Electrochemical Supercapacitor Property

作　　者：栾琼[1] 薛春峰[1] 祝红叶 杨复娟 马旭莉[1] 郝晓刚[1] LUAN Qiong XUE Chun-feng ZHU Hong-ye YANG Fu-juan MA Xu-li HAO Xiao-gang(Department of Chemical Engineering, Taiyaum University of Technology, Taiyuan 030024, Shanxi, Chin)

机构地区：[1]太原理工大学化学工程系,山西太原030024

出　　处：《电化学》2017年第1期13-20,共8页Journal of Electrochemistry

基　　金：国家自然科学基金项目(No.21476156);山西省自然科学基金项目(No.2014011012-05)资助

摘　　要：以涂敷在碳布基体上的金属有机骨架多孔材料HKUST-1为硬模板,使用单极脉冲法沉积聚苯胺制备了具有电活性的多孔复合电极Micro-PANI/CC,同时以空白碳布(Carbon Cloth,CC)为基体制备了聚苯胺电极PANI/CC,并研究、比较了它们的电化学电容器性能.使用XRD、SEM分析了所得电极的结构,结果显示电极Micro-PANI/CC表面具有大量的纳米孔状结构.在0.5 mol·L^(-1)硫酸为电解液的体系中测试了循环伏安、恒电流充放电、阻抗以及稳定性等特性,在扫速为2 mV·s^(-1)时,电极Micro-PANI/CC和PANI/CC的比电容分别为895.6 F·g-1和547.6 F·g^(-1),在其它测试条件相同的情况下,前者的比电容保持在后者的1.64倍以上,且具有更好的倍率特性、更低的电阻和较好的稳定性等特点,说明这种以HKUST-1为模板形成的多孔聚苯胺更适于超级电容器电极材料.Excellent electrode plays vital important role in the performance of supercapacitors.Polyaniline（PANI） with good conductivity is often used to prepare electrode.However,its available surface is limited and results in a poor supercapacitance in many cases.It is desirable to fabricate an electrode containing electroactive PANI with high surface area deriving from its porous structure.Here,the metal-organic framework（MOF） material with high surface area was selected as a hard template for synthesizing porous PANI.Microporous PANI composite electrodes（Micro-PANI/CC） were fabricated by depositing aniline on to carbon cloth（CC） pre-coated with MOF material of HKUST-1 using a unipolar pulse electro-polymerization method.At the same time,the PANI electrodes（PANI/CC） were also synthesized on blank carbon cloth for further comparatively studying their supercapacitor performances.Their microstructure and morphology were characterized by using XRD and SEM.Results indicate that the micro-PANI/CC electrode was composed of aggregated nanosized PANI spheres with pore structure.The cyclic voltammetry,constant current charge and discharge,impedance and stability tests were performed to evaluate the supercapacitor properties in 0.5 mol·L-1 sulfuric acid electrolyte.Specific capacitances of micro-PANI/CC and PANI/CC electrodes were 895.6 F·g-1 and 547.6 F·g-1at scan rate of 2 mV·s-1,respectively.At the same given conditions,the specific capacitance of micro-PANI/CC electrode was always 1.64 times higher than that of PANI/CC electrode.Meanwhile,the micro-PANI/CC electrode exhibited better rate capability,lower resistance and better stability of charge and discharge than PANI/CC.all the results imply that the microporous PANI templated from HKUST-1 could be a good candidate for the electrode of supercapacitors.

关 键 词：超级电容器 HKUST-1 多孔 聚苯胺 单极脉冲法 

分 类 号：O627[理学—有机化学] TM53[理学—化学]