Li Shaobin, Pan Jing, Li Fengbo, Zhang Li, Chai Dongfeng, Zhang Zhuanfang, Xin Jianjiao
College of Materials Science and Engineering, Qiqihar University, Qiqihar 161006, China.
Dalton Trans. 2020 Aug 7;49(29):10203-10211. doi: 10.1039/d0dt00251h. Epub 2020 Jul 15.
A simple continuous hydrothermal method was used to synthesize a NiFeO@Ni-Mn LDH/NF composite. The layered structure provides a large void to transfer the electron effectively, and the composite materials exhibit remarkable electrochemical performance including excellent specific capacitance (1265 F g at 1 A g) and remarkable cycling stability (the specific capacitance remains at 80.9% after 5000 cycles). In addition, the asymmetric supercapacitor exhibits a high energy density of 96.2 W h kg at a power density of 700 W kg, and there is an extraordinarily good cycling stability with a capacity retention rate of 92.5% after 4000 cycles. The outcomes indicate that the NiFeO@Ni-Mn LDH/NF composite electrode has potential application as a high-performance supercapacitor.
采用一种简单的连续水热法合成了NiFeO@Ni-Mn LDH/NF复合材料。层状结构提供了大的空隙以有效地传输电子，并且该复合材料表现出显著的电化学性能，包括优异的比电容（在1 A g下为1265 F g）和显著的循环稳定性（5000次循环后比电容保持在80.9%）。此外，不对称超级电容器在功率密度为700 W kg时表现出96.2 W h kg的高能量密度，并且具有非常好的循环稳定性，4000次循环后的容量保持率为92.5%。结果表明，NiFeO@Ni-Mn LDH/NF复合电极作为高性能超级电容器具有潜在的应用价值。
