The growth of wearable and portable electronics drives the miniaturization of energy storage devices. Micro-supercapacitors (MSCs) with fast charging and discharging rates, long life cycles and high energy density stand out from miniaturized energy storage devices, especially given their small size and construction Adjustable, easy handling to integrate with other integrated chip electronic devices. During the evaluation of the micro-supercapacitor, scientists from the Beijing Institute of Technology systematically analyzed the integration of the MSC with other electronic devices from a structural and functional perspective. They published their work on August 3 at Energy materials progress.
“MSCs typically have a planar structure, and the two electrodes are separated in-plane without an additional separator. The MSC’s narrow electrode spacing allows for rapid transport of electrolyte ions between electrodes. short diffusion distance, charge easily accumulated and released during charging and discharging, allowing MSC’s extremely high energy density for electrical equipment“The corresponding author Liangti Qu, professor at Tsinghua University, said.” The extremely high power density of MSC promotes a great momentum for electrical devices, thus MSC shows great potential in ultra-small wearable electronics. “
Qu explains the advantages of the planar feature of the MSC, especially for its small area, usually in the range of centimeters to micrometers, which can be assembled in several portable electronic devicesuch as on-chip integrated circuits, micro-robots and position indicators.
“The integration of MSC and other electronic devices is gradually becoming an important development direction for MSC and an important part of future integrated circuits,” said Qu. “The application of MSC integration is mainly concerned with the connections and coverage between each electrical componentsand the suitability of the material and structure of the device. Discussions about this device have never been mentioned before. “
Focusing on the applications of multifunctional MSCs and MSC integrated circuits, Qu and his team introduced some special properties of multifunctional MSCs in the review. In addition, from an integration point of view, as energy storage units, MSCs combined with energy consuming devices (such as sensors) or energy supply devices are systematically discussed. . To achieve a robust and compact structure, design the MSC and various electronics into an all-in-one structure using compatible materials also listed. Finally, the challenges and development potential of MSC integrated systems are presented.
“We surmised the research objective of integrated MSC systems in the review. The evolution of integrated MSC devices ranged from a simple, rudimentary connection with a metal wire to a combination of all. all the components into a shared substrate, and then the organic unity in all in one structure makes the integrated MSCs device even more compact and powerful,” said Qu.
“The level of integration of self-powered integrators including MSCs and power generators is still unsatisfactory. Loose and rudimentary connections between the generating equipment and the MSC are easily caused. energy consumptionresulting in low charging efficiency and insufficient charging voltage of the MSCs,” said Qu.
“Although the development of the structure and system integration of MSCs has solved this problem to a certain extent, very few compatible and multifunctional materials can be selected. Besides, Integrated device structure design is also difficult to meet most practical applications.To solve these problems, multifunctional compatible materials and structural design of integrated devices between MSC and other devices are required. electronic components should be developed in future MSC integrated devices. ”
Chang Gao et al., The recent development of integrated systems of microcapacitors, Energy materials progress (In 2022). DOI: 10.34133 / 2022/9804891
Provided by Beijing Institute of Technology Press Co., Ltd
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