Qian Yongteng, Lyu Zhiyi, Zhang Qianwen, Lee Tae Hyeong, Kang Tae Kyu, Sohn Minkyun, Shen Lin, Kim Dong Hwan, Kang Dae Joon
College of Pharmacy, Jinhua Polytechnic, Jinhua 321007, China.
Department of Physics, Sungkyunkwan University, 2066, Seobu-ro, Jangan-gu, Suwon-si 16419, Republic of Korea.
Micromachines (Basel). 2023 Jan 23;14(2):297. doi: 10.3390/mi14020297.
MoS, owing to its advantages of having a sheet-like structure, high electrical conductivity, and benign environmental nature, has emerged as a candidate of choice for electrodes of next-generation supercapacitors. Its widespread use is offset, however, by its low energy density and poor durability. In this study, to overcome these limitations, flower-shaped MoS/graphene heterostructures have been deployed as electrode materials on flexible substrates. Three-electrode measurements yielded an exceptional capacitance of 853 F g at 1.0 A g, while device measurements on an asymmetric supercapacitor yielded 208 F g at 0.5 A g and long-term cyclic durability. Nearly 86.5% of the electrochemical capacitance was retained after 10,000 cycles at 0.5 A g. Moreover, a remarkable energy density of 65 Wh kg at a power density of 0.33 kW kg was obtained. Our MoS/Gr heterostructure composites have great potential for the development of advanced energy storage devices.
由于具有片状结构、高导电性和环境友好等优点，二硫化钼已成为下一代超级电容器电极的候选材料。然而，其低能量密度和较差的耐久性限制了它的广泛应用。在本研究中，为克服这些限制，已将花状二硫化钼/石墨烯异质结构用作柔性基板上的电极材料。三电极测量在1.0 A g时产生了853 F g的优异电容，而在不对称超级电容器上进行的器件测量在0.5 A g时产生了208 F g的电容以及长期循环耐久性。在0.5 A g下进行10,000次循环后，近86.5%的电化学电容得以保留。此外，在功率密度为0.33 kW kg时获得了65 Wh kg的显著能量密度。我们的二硫化钼/石墨烯异质结构复合材料在先进储能器件的开发方面具有巨大潜力。
