scholarly journals Blessing and Curse: How a Supercapacitor’s Large Capacitance Causes its Slow Charging

2020 ◽  
Vol 124 (7) ◽  
Author(s):  
Cheng Lian ◽  
Mathijs Janssen ◽  
Honglai Liu ◽  
René van Roij
Keyword(s):  
2021 ◽  
Vol 5 (1) ◽  
Author(s):  
Depeng Wang ◽  
Shufang Zhao ◽  
Ruiyang Yin ◽  
Linlin Li ◽  
Zheng Lou ◽  
...  

AbstractDiversified regulation of electrons have received much attention to realize a multi-functional transistor, and it is crucial to have a considerable control over the charge carriers in transistors. Ionic gel, as the dielectric material in transistors, facilitates a large capacitance, and high induced-carrier concentrations. This review presents the recent progress in ionic-gated transistors (IGTs) that have good mechanical stability as well as high physical and chemical stability. We first briefly introduce the various applications of IGTs in sensors, neuromorphic transistors, organic transistor circuits, and health detection. Finally, the future perspectives of IGTs are discussed and some possible solutions to the challenges are also proposed.


2021 ◽  
Vol 16 (6) ◽  
pp. 1005-1010
Author(s):  
Jian Wang ◽  
Yan Zhao ◽  
Yucai Li ◽  
Shiwei Song

The electrochemical performance of the material depends heavily on the morphologies and structural characteristics of the material. Co3O4 samples show the remarkable electrochemical performance owing to the high porosity, appropriate pore size distribution and novel architecture and the effect of NH4F for morphology. Co3O4 nanowires grown on Ni foam have been synthesized through a facile hydrothermal approach, revealing large capacitance of 2178.4 mF cm−2 at the current density of 2 mA cm−2 and superior cycling stability.


2018 ◽  
Vol 5 (6) ◽  
pp. 1166-1175 ◽  
Author(s):  
Swetha Chandrasekaran ◽  
Bin Yao ◽  
Tianyu Liu ◽  
Wang Xiao ◽  
Yu Song ◽  
...  

Additive manufacturing is used to overcome inherent aerogel limitations. 3D printed aerogels simultaneously exhibit large capacitance and fast ion transport in millimeter-thick electrodes.


1986 ◽  
Vol 72 ◽  
Author(s):  
O. Bouquin ◽  
M. Lejeune ◽  
J. P. Boilot

AbstractMultilayer capacitors were made from Pb(Mg1/3Nb2/3)O3 compositon by an usual technique: ceramic green sheets formed by slip casting method, printed with an 70% wt Ag- 30% wt Pd internal electrode and sintered at temperature ranging from 950 to 11OO°C. Chip capacitors exhibit large capacitance and temperature characteristics meet Z5U specification. Electrical properties of MLC based on PMN depend on specific parameters such as the average concentration of pyrochlore phase and perovskite phase, and the homogeneity degree of dielectric layers. Load humidity life tests show a degradation of some chips which can be connected with the formation of a surface layer rich in pyrochlore phase.


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