scholarly journals Paper-based microfluidic aluminum–air batteries: toward next-generation miniaturized power supply

Lab on a Chip ◽  
2019 ◽  
Vol 19 (20) ◽  
pp. 3438-3447 ◽  
Author(s):  
Liu-Liu Shen ◽  
Gui-Rong Zhang ◽  
Markus Biesalski ◽  
Bastian J. M. Etzold

Aluminum–air batteries with a unique paper-based microfluidic configuration are fabricated, and their superior discharging performance along with miniaturized size makes them feasible as next-generation power supplies for small electronic devices.

2020 ◽  
Vol 8 (1) ◽  
pp. 25-34
Author(s):  
Khoirul Effendi ◽  
◽  
Junaidi Junaidi ◽  
Sri Wahyu Suciyati ◽  
◽  
...  

Research about power supplies has been developed for various requirement. The power supply is used to supply electronic devices and laboratory-scale equipment, one of which is electrospinner. Electrospinner is an instrument used to make nanofibers consisting of several components, namely: power supply, high voltage, syringe pump, and collector drum. Electrospinner requires a stable supply of voltage so that the system can work well and requires a lot of voltage supply to supply components from the electrospinner. Arduino-based switching mode power supply (SMPS) is designed in this research. Arduino-based SMPS makes it possible to produce a stable supply with many outputs. Arduino as a PWM generator is used to control the power supply output voltage based on duty cycle. The results of the study addressed the duty cycle affecting the output of the power supply. The output voltage generated by the power supply can be set from 0-100 V with an accuracy of 98.19%, an error of 1.81% and a precision of 0.02% which is stated by the variation of the coefficient. The power supply produced also has an extra output voltage of 15 VCT and 15 V.


Impact ◽  
2019 ◽  
Vol 2019 (10) ◽  
pp. 6-8
Author(s):  
Qixin Guo

Next-generation power electronics is a term that is used to refer to devices of the future that will need to process considerably more energy in order to function than is typical for current electronic devices. For instance, the amounts of power that electric cars will need to process in the future necessitates new methods and techniques, particularly those that permit a minimising of power loss and can dissipate heat efficiently. Professor Qixin Guo is focused on understanding more about next-generation power electronics. He explains that one means of achieving these ambitions is through the use of wide bandgap (WBG) semiconductors, which are preferred over narrow band semiconductors, such as Silicon. 'This is because the large energy separation between the conduction and the valance bands enables electronic devices to operate at elevated temperatures and higher voltages,' outlines Guo. Powering electronics necessitates pushing an electron into a conducting state and bandgaps measure how energy is required to do this. Therefore, the larger the bandgap, the more a material can withstand a stronger electric field. 'Ultimately, this means that components can be thinner, lighter and handle more power than components that are made up of materials with lower bandgaps.' With that in mind, researchers around the world are exploring materials that can be used as WBG semiconductors to usher in the next generation of power electronics. If this can be achieved, our lives will be affected in myriad ways, where new efficiencies enable power capabilities that would have been unthinkable even just a few years ago.


Author(s):  
Xin Shen ◽  
Hongchun Shu ◽  
Min Cao ◽  
Nan Pan ◽  
Junbin Qian

In distribution networks with distributed power supplies, distributed power supplies can also be used as backup power sources to support the grid. If a distribution network contains multiple distributed power sources, the distribution network becomes a complex power grid with multiple power supplies. When a short-circuit fault occurs at a certain point on the power distribution network, the size, direction and duration of the short-circuit current are no longer single due to the existence of distributed power, and will vary with the location and capacity of the distributed power supply system. The change, in turn, affects the current in the grid, resulting in the generation and propagation of additional current. This power grid of power electronics will cause problems such as excessive standard mis-operation, abnormal heating of the converter and component burnout, and communication system failure. It is of great and practical significance to study the influence of distributed power in distributed power distribution networks.


Author(s):  
Zengxia Pei ◽  
Luyao Ding ◽  
Cheng Wang ◽  
Qiangqiang Meng ◽  
Ziwen Yuan ◽  
...  

Flexible zinc-air batteries (ZABs) have been scrutinized as a type of promising flexible power source for next-generation electronic devices, but the batteries’ temperature adaptability has been a major hurdle due...


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