摘要
非对称式超级电容器采用赝电容型和双电层型电极材料分别作为正负电极,可以结合两种电容器的优势.利用电化学沉积法,制得氢氧化钴/氢氧化镍/碳纤维纸(Co(OH)_2/Ni(OH)_2/CFP)正电极;利用简单的喷涂法,在碳纤维纸上喷涂活性碳,获得活性碳/碳纤维纸(AC/CFP)负电极,并选用KOH水溶液作为电解液.电极材料制备简单,成本低廉,具有高的导电性和可逆性.组装的非对称式超级电容器充放电速度快,循环寿命长,能量密度高,功率密度高.高的电化学性能来源于高导电性的电极材料以及正负电极的协同效应.
With different electrode materials as positive and negative electrode,asymmetric capacitors show a combinative advantage of electric double layer capacitance and faradaic pseudocapacitance. Co（OH）2/Ni（OH）2/CFP positive electrode has been synthesized by electrochemical deposition. With a simple spraying method activated carbon coating on carbon fiber paper electrode has been prepared to use as the negative electrode. And an aqueous solution of KOH is chosen as the electrolyte for the capacitor. The electrode material is easy preparation,low cost,high conductivity and excellent reversibility. The asymmetric capacitor shows fast charge-discharge rate,long cycle life,high energy density and high power density. High electrochemical performance is derived from the high conductivity of electrode materials and synergistic effect between the positive and negative electrodes.
出处
《吉林师范大学学报（自然科学版）》
2017年第4期105-109,共5页
Journal of Jilin Normal University:Natural Science Edition
基金
吉林省教育厅项目(2016-222)
吉林师范大学博士启动项目(2014007)
关键词
电化学沉积
纳米复合材料
活性碳
非对称电容器
electrochemical deposition
nano composite materials
activated carbon
asymmetric capacitor
