Professor Yuchong Yeol of the Department of Chemistry Develops Aluminum Ion Battery

Ultrafast Charging Aluminum Ion Battery Based on Composite Electrodes Including Graphene

[Asia Economy Honam Reporting Headquarters Reporter Choi Jae-kyung] The research on aluminum-ion batteries by Professor Yoo Choong-yeol of the Department of Chemistry at National Mokpo University in Jeonnam has been published in "Nano Letters" (IF 11.189), a world-renowned journal in the field of nanoscience and technology issued by the American Chemical Society.

Lithium-ion batteries are widely used in various applications, from mobile devices such as smartphones to electric vehicles. However, due to their short lifespan, explosion risks, and price volatility caused by the scarcity of lithium, efforts to find alternatives to lithium-ion batteries continue.

Amid this, a domestic research team has developed a high-performance aluminum battery capable of ultra-fast charging within one minute by utilizing a graphene/carbon nanotube composite electrode.

Aluminum is non-toxic, explosion-free, recyclable, and is the third most abundant element on Earth, making it inexpensive and easy to supply.

Secondary batteries using aluminum ions to store energy represent the latest technology and are attracting attention as a safe alternative that can replace commercial batteries.

Professor Yoo Choong-yeol of the Department of Chemistry at Mokpo University clearly elucidated the intercalation reaction mechanism of aluminum-ion batteries through real-time charge transport measurements and optical microscopy analysis by fabricating on-chip electrochemical cells based on two-dimensional hetero-multilayer electrodes.

Based on the results of these on-chip electrochemical cell experiments, they succeeded in developing a high-performance aluminum-ion battery capable of ultra-fast charging based on graphene/carbon nanotube composite electrodes.

The title of the reported paper is “Chloroaluminate Anion Intercalation in Graphene and Graphite: From Two-Dimensional Devices to Aluminum-Ion Batteries.”

This research was conducted in collaboration with Dr. Yoon Hana’s research team at the Energy Storage Laboratory of the Korea Institute of Energy Research, UC Berkeley, and Harvard University. Professor Yoo Choong-yeol participated as the corresponding author, conducting advanced electrochemical analysis research on aluminum-ion battery materials and devices.

Professor Yoo emphasized the distinctiveness and excellence of the research results, stating, “Through real-time charge transport measurements and optical microscopy analysis, we clearly elucidated the intercalation reaction of aluminum-ion batteries and developed a new aluminum-ion battery capable of ultra-fast charging based on this.”

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