Micro Supercapacitors



 Advancing technology depends on creating devices that are energy efficient and more compact. Researchers are developing ways to work with nanoscale form energy-storing capacitors.

Scientists from the KTH Royal Institute of Technology in Sweden report that they've made progress using a unique 3D printing method. The Swedish scientists showed a 3D printing method for fabricating glass micro supercapacitors (MSCs).This method reduces the time and complexity used to form the precise nanoscale features MSCs need. 

The study was recently published in ACS Nano.

Frank Niklaus is a professor of micro and nanosystems at KTH. He reports, "The advance could potentially lead to more compact and energy efficient portable devices, including self-sustaining sensors, wearable devices and other Internet of Things applications."

 The technique points out two important factors to creating the devices. A micro supercapacitor's capabilities are determined by electrodes. Electrodes both store and conduct electrical energy.  They would also need nanoscale channels to make possible rapid ion transport. 

Po-Han Huang is the lead author of the study at KTH. He claims that the new research addresses both issues by using ultrashort laser pulse 3D printing technology. Scientists used hydrogen silsesquioxane (HSQ), it is a glasslike precursor substance. They discovered the laser pulses can excite two reactions. One reaction resulted in self organized nanoplates. The second reaction converts the precursor into glass. This glass is the foundation of the 3D printing process. It allows for the precise fabrication of electrodes with a lot of open channels. These channels both maximize surface area and speed up ion transport.

Huang summarizes, " Our findings represent a significant leap forward in micro fabrication with broad implications for the development of high-performance energy storage devices. Beyond MSCs, our approach has exciting potential applications in fields such as optical communication, nanoelectromechanical sensors and 5D optical data storage."


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