当前位置: X-MOL 学术J. Alloys Compd. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
MnO2 nanoflowers-decorated MXene nanosheets with enhanced supercapacitor performance
Journal of Alloys and Compounds ( IF 5.8 ) Pub Date : 2023-05-04 , DOI: 10.1016/j.jallcom.2023.170411
Lang Luo , Wei Meng , Guojun Wang , Jinlong Qin , Haiyan He , Huajie Huang

As typical energy storage devices, the extensive application of the supercapacitors is largely restricted by their relatively low energy storage efficiency, which motivates the development of various advanced electrode materials with sophisticated architectural design. Herein, we put forward a robust and controllable approach to construct a series of hybrid nanoarchitectures consisting of nanoflower-shaped MnO2 nanocrystals grown on super-thin Ti3C2Tx MXene nanosheets (MNF/Ti3C2Tx) via a convenient co-precipitation process. Such a delicate configuration enables the nanoarchitectures to provide prominent structural merits, such as 2D thin-sheet structure with large surface area, porous MnO2 nanoflower frameworks, activated electronic structure, and high electron conductivity. As a consequence, the optimized MNF/Ti3C2Tx electrode manifests superior electrochemical capacitive properties with a maximum specific capacitance of 348.5 F g−1 at 0.5 A g−1, excellent rate property, and reliable cycling stability with 91.9% retention of initial capacitance after 5000 cycles, all of which are more competitive than those of conventional MnO2 and Ti3C2Tx electrodes.



中文翻译:

MnO2 纳米花装饰的 MXene 纳米片具有增强的超级电容器性能

作为典型的储能设备,超级电容器的广泛应用在很大程度上受到其相对较低的储能效率的限制,这推动了具有复杂结构设计的各种先进电极材料的发展。在此,我们提出了一种稳健且可控的方法来构建一系列混合纳米结构,该结构由生长在超薄 Ti 3 C 2 T x MXene纳米片 (MNF/Ti 3 C 2 T x )上的纳米花状 MnO 2纳米晶体组成,通过方便的共沉淀过程。如此精细的配置使纳米结构能够提供突出的结构优点,例如具有大表面积的二维薄片结构、多孔 MnO 2纳米花框架、激活的电子结构和高电子传导性。因此,优化后的 MNF/Ti 3 C 2 T x电极表现出优异的电化学电容性能,在 0.5 A g -1时的最大比电容为 348.5 F g -1,优异的倍率性能和可靠的循环稳定性,保留率为 91.9% 5000次循环后的初始电容,均优于传统MnO 2和Ti3 C 2 T x电极。

更新日期:2023-05-09
down
wechat
bug