Wei Chengzhen, Cheng Cheng, Wang Shanshan, Xu Yazhou, Wang Jindi, Pang Huan
College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, 455002, Henan, P. R. China.
College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, Jiangsu, China.
Chem Asian J. 2015 Aug;10(8):1731-7. doi: 10.1002/asia.201500335. Epub 2015 Jun 26.
A simple hydrothermal method has been developed to prepare hexagonal tablet precursors, which are then transformed into porous sodium-doped Ni2P2O7 hexagonal tablets by a simple calcination method. The obtained samples were evaluated as electrode materials for supercapacitors. Electrochemical measurements show that the electrode based on the porous sodium-doped Ni2P2O7 hexagonal tablets exhibits a specific capacitance of 557.7 F g(-1) at a current density of 1.2 A g(-1) . Furthermore, the porous sodium-doped Ni2P2O7 hexagonal tablets were successfully used to construct flexible solid-state hybrid supercapacitors. The device is highly flexible and achieves a maximum energy density of 23.4 Wh kg(-1) and a good cycling stability after 5000 cycles, which confirms that the porous sodium-doped Ni2P2 O7 hexagonal tablets are promising active materials for flexible supercapacitors.
已开发出一种简单的水热法来制备六方片状前驱体，然后通过简单的煅烧方法将其转化为多孔钠掺杂的Ni2P2O7六方片。所获得的样品被评估为超级电容器的电极材料。电化学测量表明，基于多孔钠掺杂的Ni2P2O7六方片的电极在1.2 A g(-1)的电流密度下表现出557.7 F g(-1)的比电容。此外，多孔钠掺杂的Ni2P2O7六方片成功用于构建柔性固态混合超级电容器。该器件具有高度柔性，在5000次循环后实现了23.4 Wh kg(-1)的最大能量密度和良好的循环稳定性，这证实了多孔钠掺杂的Ni2P2O7六方片是用于柔性超级电容器的有前景的活性材料。
