Researchers of Kim Il Sung University are conducting intensive research into design of energy materials which are indispensable in the development and utilization of natural energy resources.
“Energy materials are largely divided into those for energy conversion and energy storage. Our goal is to design materials that are highly effective in converting natural energy into electric energy and in storing the converted energy,” said Yu Chol Jun (pictured), professor and PhD, who is department chief of the materials science faculty.
He has spent several years engaged in the research into materials for photovoltaic cells.
Today, it is a dominant trend in the development of photovoltaic conversion materials for solar panels to use perovskite which can be obtained at low cost by a chemical method, instead of using expensive silicon.
However, perovskite entails some stability problems.
Yu newly designed an interface structural model of the photovoltaic material consisting of mixed halogen perovskite, Lewis base and graphene.
“Mixed halogen perovskite and graphene are widely applied as energy conversion materials. I found out that when Lewis base is added between mixed halogen perovskite and graphene to form a new interface structural model, it can improve the stability of the photovoltaic cells,” said Yu.
He also discovered that the replacement of a certain amount of titanium, which is used as a cathode activation material for sodium ion battery, by vanadium can greatly expand the storage capacity in the design of energy storage materials.
According to him, the research finding provided the scientific base for increasing the capacity of sodium ion batteries to more than double that of expensive lithium batteries at the maximum.
Yu has contributed 43 papers to SCI-class magazines and his last paper was published last January.
More From Pyongyang Times
As regards the fact that the US recently decided to move its aircraft carrier from the Mediterranean to the Caribbean Sea, the
October 29, 2025
As regards the fact that the US recently decided to move its aircraft carrier from the Mediterranean to the Caribbean Sea, the
DPRK player Pak Kyong Song lifted 112kg in snatch (new record of the games) and won a gold medal in the men's 56kg category at the
October 29, 2025
DPRK player Pak Kyong Song lifted 112kg in snatch (new record of the games) and won a gold medal in the men's 56kg category at the
The United States enforced sanctions on Colombia on October 24. It found fault with the latter’s rejection of its demand for
October 29, 2025
The United States enforced sanctions on Colombia on October 24. It found fault with the latter’s rejection of its demand for
International efforts are being intensified to solve food problem. The 80th Session of the UN General Assembly discussed
October 29, 2025
International efforts are being intensified to solve food problem. The 80th Session of the UN General Assembly discussed
The 18th Pyongyang International Film Festival closed at the Pyongyang International Cinema House on October 27. Present at the
October 29, 2025
The 18th Pyongyang International Film Festival closed at the Pyongyang International Cinema House on October 27. Present at the
Modern dwelling houses have been built in Chilhyang-ri, Orang County, North Hamgyong Province, this year again after last year.
October 29, 2025
Modern dwelling houses have been built in Chilhyang-ri, Orang County, North Hamgyong Province, this year again after last year.
The 17th Pyongyang Autumn International Trade Fair opened in the DPRK. Presented to the fair were tens of thousands of products of
October 29, 2025
The 17th Pyongyang Autumn International Trade Fair opened in the DPRK. Presented to the fair were tens of thousands of products of
Pak Thae Song, member of the Presidium of the Political Bureau of the Central Committee of the Workers' Party of Korea and premier
October 29, 2025
Pak Thae Song, member of the Presidium of the Political Bureau of the Central Committee of the Workers' Party of Korea and premier
The whole countryside is turning into a socialist paradise day by day. New public and production buildings have been built at the
October 29, 2025
The whole countryside is turning into a socialist paradise day by day. New public and production buildings have been built at the
Choe Son Hui, foreign minister of the Democratic People's Republic of Korea, who is on a visit to the Russian Federation at the
October 29, 2025
Choe Son Hui, foreign minister of the Democratic People's Republic of Korea, who is on a visit to the Russian Federation at the
Venezuela is one of the world’s leading oil producers and exporters. The country is rich in underground resources including
October 28, 2025
Venezuela is one of the world’s leading oil producers and exporters. The country is rich in underground resources including
Sergey Narishkin, director of the Russian external intelligence agency, denounced the war moves of the West in a consultative meet
October 28, 2025
Sergey Narishkin, director of the Russian external intelligence agency, denounced the war moves of the West in a consultative meet
New villages were built at the Nongsadong Farm and the Hongam Farm of Taehongdan County in Ryanggang Province. Present at the
October 28, 2025
New villages were built at the Nongsadong Farm and the Hongam Farm of Taehongdan County in Ryanggang Province. Present at the
National intangible cultural heritage elements were newly registered in August. Custom of moving into new house It is a
October 28, 2025
National intangible cultural heritage elements were newly registered in August. Custom of moving into new house It is a
The drive for economy is being dynamically carried on throughout the country. Economy is an important way to maximize production
October 28, 2025
The drive for economy is being dynamically carried on throughout the country. Economy is an important way to maximize production
The Taean Heavy Machine Complex was selected as one of top 10 businesses for 2024 as it completed the huge task of manufacturing
October 28, 2025
The Taean Heavy Machine Complex was selected as one of top 10 businesses for 2024 as it completed the huge task of manufacturing
The 2025 FIFA U-17 Women's World Cup is now underway in Morocco. Divided into six groups, the teams competed in league matches and
October 27, 2025
The 2025 FIFA U-17 Women's World Cup is now underway in Morocco. Divided into six groups, the teams competed in league matches and
The DPRK players bagged seven medals including three golds at the 2025 World Wrestling Championship in Croatia in September. Han
October 27, 2025
The DPRK players bagged seven medals including three golds at the 2025 World Wrestling Championship in Croatia in September. Han
DPRK athlete Kang Ryon Hui won a gold medal at the Third Asian Youth Games being held in Bahrain. The Games brought together more
October 27, 2025
DPRK athlete Kang Ryon Hui won a gold medal at the Third Asian Youth Games being held in Bahrain. The Games brought together more
Russia recently conducted a military exercise involving ground, maritime and air elements of its strategic nuclear force under the
October 27, 2025
Russia recently conducted a military exercise involving ground, maritime and air elements of its strategic nuclear force under the
More Articles
