摘要
超级电容器具有大充放电速率、良好的循环稳定性及高功率密度等优点,是一种新兴的绿色环保储能器件。采用简单的水热合成法制备镍铝层状双金属氢氧化物(NiAl-LDHs)超级电容器电极材料,探究不同镍铝比对其形貌组成及电化学性能的影响。所制备的Ni1Al1-LDHs电极材料在电流密度为1A/g时表现出378F/g的高比电容。以活性炭(AC)为负极组成的Ni1Al1-LDHs//AC非对称超级电容器在能量密度为27.5 Wh/kg时,具有1.4 kW/kg的高功率密度,表现出优异的电化学性能。
As a new green energy storage device,supercapacitors has the advantages of fast charge and discharge rates,good cycle stability,and high power density.In this study,a simple hydrothermal synthesis method was used to prepare nickel aluminum layered double hydroxides(NiAl-LDHs)electrode materials for supercapacitors,and the effects of different nickel aluminum ratios on their mor-phology,composition,and electrochemical properties were investigated.The Ni1Al1-LDHs electrode material exhibits a high specific capacitance of 378 F/g at a current density of 1 A/g.The Ni1Al1-LDHs//AC asymmetric supercapacitor with activated carbon(AC)as the negative electrode has a high power density of 1.4 kW/kg at an energy density of 27.5 Wh/kg,exhibiting excellent electrochemical performance.
作者
刘宽鑫
黎阳
王利军
乔永民
LIU Kuanxin;LI Yang;WANG Lijun;QIAO Yongmin(School of Energy and Materials,Shanghai Polytechnic University,Shanghai 201209,China;Shanghai Shanshan Tech Co.,Ltd.,Shanghai 201209,China)
出处
《上海第二工业大学学报》
2023年第3期210-218,共9页
Journal of Shanghai Polytechnic University
基金
郴州2022年国家可持续发展议程创新示范区建设省级专项(2022sfq26)资助。
关键词
镍铝层状双金属氢氧化物
超级电容器
水热合成法
电化学性能
nickel aluminum layered double hydroxide
supercapacitor
hydrothermal synthesis
electrochemical performance
