Striving for Fuel · Secondary Battery Efficiency Improvement and Next Generation Solar Cell Development
emerges as a stronghold for energy education and research. In an effort to address
the global energy crisis, DGIST strives for convergence energy research and
education. DGIST makes stride to advance the next generation energy technology
in the areas of fuel cell, secondary battery, solar cell, thermoelectric
technology, and capture-and-utilization-of-carbon technology.
Speed up the Development of Renewable Energy to Address the Global Warming
for the 21st Century Sustainable Growth Engine with Convergence
Education and Research
◆ Department of Energy Systems Engineering
Department of Energy Systems Engineering at the Graduate School of DGIST is
carrying out education and research mainly focusing on the development of fuel
cell and secondary battery, and the catalyst that can improve those cells’
efficiency. Research on fuel cells are carried out by research teams of Professor Jong-Sung Yu, Professor Sangaraju Shanmugam and Professor Kang Taek Lee
researches across the world mainly focus on developing catalysts such as iron,
cobalt, nickel, and carbon material in order to replace platinum. The DGIST research
teams, however, turns to graphene and carbon nanotube, and are working to
design a new carbon structure to utilize it as a catalyst. The DGIST team aims
for the commercialization of fuel cell using a cheap catalyst and applying it
into developing fuel cell vehicle.
year, a research team at DGIST succeeded in developing a photocatalysis
synthesis method which produces hydrogen in quantity. Using magnesium and
hydrogen at the same time, the team developed a titanium dioxide synthesis
method which performs more efficiently. A metallic oxide reduced by this method
is to be utilized as electrode materials and produce hydrogen in quantity in
various areas such as photoactive materials, fuel cell, and secondary cell.
though lithium ion batteries (LIBs) have been the most prevalent energy-storage
technology so far especially in terms of energy and power densities, there
are increasing concerns regarding the safety of Li-based batteries and the area
preponderance of Li resources. Therefore, multivalent ion batteries based on
Mg, Ca, Zn and Al carrier ions have received attention due to its expected
large volumetric energy density of their metals and the abundances on earth. Professor Seung-Tae Hong and professor Hochun Lee are working for creating a new material overcoming the limitation of lithium ion
secondary battery being used for cell phone and electric car.
addition, the Department of Energy Systems Engineering makes research on photoelectron
cell and display material which will be used at solar battery and LED using
nano technology; electrochemical principle of energy storage and conversion
device; lowering the driving temperature of ceramic fuel battery.
◆The Convergence Research Center for Solar Energy and the Division
of Nano and Energy Convergence Research
global market for solar energy is rapidly growing. And solar energy research is
in full swing at the Convergence Research Center for Solar Energy. Currently,
the center is working on next generation solar cells, such as inorganic and
organic solar cells and dye-sensitized solar cells which will soon take over
the current solar battery market share.
Dr. Dae-Whan Kim’s team developed the CZTSSe thin film
solar cell. Dr. Kim’s cell showed 12.3% efficiency close to the world best
photoelectric conversion efficiency and this was published as a cover paper in
‘the Journal of Materials Chemistry A.’
thin film solar cell is cheaper than CIGS (copper, indium, gallium, and selenium)
because CZTSSe use zinc and tin which are more abundant and cheaper than indium
and gallium. It is viable to make CZTSSe solar cell in the form of thin film,
so that it can be applied on the outer wall of a building or used for wearable
devices. The research team will keep working to improve CZTSSE solar cell’s
photoelectric conversion efficiency to the world best level in order to further
accelerate their commercialization and advancement of technology.
addition, the Convergence Research Center for Solar Energy is making efforts to
improve dye-sensitized solar cell’s efficiency from current 11% to higher by developing
new organic dye and surface treatment technology by using nano-thin film layers.
of Nano and Energy Convergence Research is working on thermoelectric technology.
Fabrication technology of Bi-Te thermoelectric devices using nano technology,
and microstructure control technology using strong magnetic field are two key technologies
that the center takes pride in. Dr. Dong-Hwan Kim’s team, for the first time in
Korea, successfully synthesizes commercial thermoelectric devices using Bi-Te
compound thermoelectric material. Dr. Kim’s team commercialized the
thermoelectric devices manufacturing technology and transferred the technology
to domestic small-and-medium sized companies (technology fee 110 million
KRW).The thermoelectric material and thermoelectric devices synthesis
technology can further be utilized into thermoelectric cooling and precision temperature
renewable energy development and nurturing human resources in these areas are
the global issues beyond Korea. These are also an instrumental part of the
sustainable growth of the 21st century. DGIST will spare no effort
in the areas of convergence research and education to make R&D in the
future energy while educating talents who can create key technology for clean