Lithium-Sulfur Battery Achieves Improved Lifespan and Stability

[Asia Economy Reporter Junho Hwang] A technology that can significantly improve the lifespan and stability of the next-generation battery, the 'lithium-sulfur battery,' using a new electrode material has been developed. On the 19th, the research team led by Professor Jongsung Yoo from the Department of Energy Systems Engineering at Daegu Gyeongbuk Institute of Science and Technology (DGIST) announced that they developed a lithium-sulfur battery using porous silica.

The research team was the first to implement a composite electrode using porous silica instead of the conventional porous carbon used in sulfur composite electrode materials. They then conducted over 2,000 charge and discharge experiments. As a result, the team concluded that the porous silica composite electrode has superior durability.

In particular, this battery contains a high sulfur content of 6.5 mg/㎠, which is more than three times higher than the 2 mg/㎠ or less sulfur content reported in previous lithium-sulfur battery studies. The research team confirmed that this led to improvements in battery capacity and lifespan.

Professor Jongsung Yoo of DGIST’s Department of Energy Engineering said, "This research achievement is the first to demonstrate that porous inorganic structured materials, which have not been attempted until now, can be used as new sulfur composite electrode materials," adding, "It is expected to provide a new paradigm for the development of next-generation high-durability lithium-sulfur batteries."

The research results were published in the academic journal Advanced Energy Materials in the field of energy science.

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