Interlayer space regulating of NiMn layered double hydroxides for supercapacitors by controlling hydrothermal reaction time

2019 ◽  
Vol 295 ◽  
pp. 1-6 ◽  
Author(s):  
Xiaoliang Wang ◽  
Jiaqi Zhang ◽  
Shaobin Yang ◽  
Huiyan Yan ◽  
Xiaodong Hong ◽  
...  
2021 ◽  
Vol 127 (6) ◽  
Author(s):  
M. R. Manikandan ◽  
K. P. Cai ◽  
Y. D. Hu ◽  
C. L. Li ◽  
J. T. Zhang ◽  
...  

2014 ◽  
Vol 28 (06) ◽  
pp. 1450045 ◽  
Author(s):  
Arbab Mohammad Toufiq ◽  
Fengping Wang ◽  
Qurat-ul-Ain Javed ◽  
Yan Li

In this paper, single crystalline 1D tetragonal MnO 2 pen-type nanorods were synthesized by varying the dwell time through a facile hydrothermal route at a reaction temperature of 250°C. X-ray diffraction (XRD) and transmission electron microscopy (TEM) studies showed that the diameter of MnO 2 nanorods decreases from 460 nm to 250 nm with the increase in hydrothermal reaction time from 5 h to 15 h. Field-emission scanning electron microscopy (FESEM) and TEM studies revealed the evolution of improved surface morphology of MnO 2 nanorods that are prepared with longer hydrothermal reaction time. The magnetic properties of the products were evaluated using vibrating sample magnetometer (VSM) at room temperature, which showed that the as-prepared samples exhibit weak ferromagnetic behavior. The effect of diameter on the magnetization values was observed and discussed in detail.


2008 ◽  
Vol 93 (2) ◽  
pp. 373-379 ◽  
Author(s):  
Mihaela Frunza ◽  
Gabriela Lisa ◽  
M. I. Popa ◽  
N. D. Miron ◽  
Denisa Ileana Nistor

2020 ◽  
Vol 3 (6) ◽  
pp. 499-509 ◽  
Author(s):  
Alvaro Seijas‐Da Silva ◽  
Roger Sanchis‐Gual ◽  
Jose A. Carrasco ◽  
Víctor Oestreicher ◽  
Gonzalo Abellán ◽  
...  

MRS Advances ◽  
2016 ◽  
Vol 1 (45) ◽  
pp. 3089-3097 ◽  
Author(s):  
H. Adhikari ◽  
C. Ranaweera ◽  
R. Gupta ◽  
S. R. Mishra

ABSTRACTA facile hydrothermal method was used to synthesize molybdenum disulfide (MoS2) microspheres. The effect of hydrothermal reaction time on morphology and electrochemical properties of MoS2 microspheres was evaluated. X-ray diffraction showed presence of crystalline MoS2 structure, where content of crystalline phase was observed to increase with hydrothermal reaction time. Electrochemical properties of MoS2 were evaluated using cyclic voltammetry (CV) and galvanostatic charge-discharge in 3M KOH solution. Specific capacitance of nanostructured MoS2 was observed to be between 68 F/g and 346 F/g at different scan rates along with excellent cyclic stability. High power density (∼1200 W/kg) and energy density (∼5 Wh/kg) was observed for MoS2 sample synthesized for 24 hours of hydrothermal reaction time. Overall optimal electrocapactive performance was observed for sample prepared for 24 hours of reaction time. It is demonstrated that the obtained MoS2 microspheres with three-dimensional architecture has excellent electrochemical performances as electrode materials for supercapacitor applications.


2019 ◽  
Vol 31 (17) ◽  
pp. 6798-6807 ◽  
Author(s):  
Jose A. Carrasco ◽  
Roger Sanchis-Gual ◽  
Alvaro Seijas-Da Silva ◽  
Gonzalo Abellán ◽  
Eugenio Coronado

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