|Title||Develops Technology for Carbon Electrode Composition Using Semiconductor Technology|
Prof. Moon Jun-hyuk Develops Technology for Carbon Electrode Composition
Using Semiconductor Technology
- Opens the Possibility of Developing an On-chip Energy Device -
The research team led by Prof. Moon Jun-hyuk of the Chemical and Biomolecular Engineering Department used lithography technology, which is used in the semiconductor process, to develop the carbon electrode composition with a 3D network structure. The results were posted in the online edition of ‘Nano Energy,’ a world-renowned journal in the field of energy and materials ((IF 13.120) on August 23). (Corresponding author: Moon Jun-hyuk; Primary author: Kim Cheol-ho, Ph. D. course)
The carbon electrode is the essential material for an electrochemical energy storage device, such as a lithium cell or super capacitor. The existing carbon electrode has been manufactured in a chemical method through coating with a solution in which the carbon particles are dispersed. The research team led by Prof. Moon Jun-hyuk manufactured a carbon electrode using the lithography process as opposed to the conventional process that uses a solution. The lithography technology forms particle patterns for a semiconductor device. The team carbonized a high-molecule particle pattern to produce the carbon pattern. In particular, they utilized the 3D lithography process to manufacture a multi-layered carbon pattern. A characteristic of this carbon electrode is that it includes a fine porosity structure that is precisely controlled. The research team manufactured a compact-size super capacitor chip using the lithography carbon electrode and discovered very fast charging and discharging properties, along with high-density energy storage.
Prof. Moon Jun-hyuk said, “For instance, the manufacturing of an energy storage device using the semiconductor process means that a battery can be manufactured with a semiconductor device. This type of on-chip energy device is expected to be applied to the next generation of wearable devices.”
This study was implemented with the sponsorship of the C1 refinery project and the project for developing core technologies for aerospace conducted by the National Research Foundation of Korea.
▲ Process diagram for the implementation of a super-thin energy storage device and the manufacturing of a carbon electrode utilizing the semiconductor process: with the 3D lithography technology, a high-molecule pattern is produced and the carbon electrode is manufactured by carbonizing the pattern; the electrode wiring is installed to the carbon electrode and, by applying the electrolyte, the energy storage device is realized.
▲ On-chip energy device embedded with the lithography carbon electrode: (left) multi-layered carbon electrode/energy device cell manufactured on a wafer; (middle) a cell; (right) multi-layered particle pattern carbon electrode, viewed through electronic microscope.
▲ LED operation using the manufactured energy device: (left) LED operated by controlling the voltage and energy density, integrated on the energy device board; (right) the charging and discharging chart for the unit cell of the energy device.