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Striving for Fuel · Secondary Battery Efficiency Improvement and Next Generation Solar Cell Development

  • 조회. 447
  • 등록일. 2016.08.30
  • 작성자. Administrator

Striving for Fuel · Secondary Battery Efficiency Improvement and Next Generation Solar Cell Development 











DGIST

emerges as a stronghold for energy education and r
esearch. 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.



 



-To

Speed up the Development of Renewable Energy to Address the Global Warming






-Working

for the 21
st Century Sustainable Growth Engine with Convergence

Education and Research






Department of Energy Systems Engineering



 



The

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 



 



Many

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.



 



Last

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.



 



Even

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.



 



In

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






 



The

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.’



 



CZTSSe

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.



 



In

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.



 



Division

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

controlling.



 



New

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 21
st 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

energy.