Is There a Battery to Replace Explosive-Risk 'Lithium Secondary Batteries'?

Professor Oh Pil-geon of Pukyong National University Develops New Electrode for All-Solid-State Batteries
Accelerating Commercialization of New Battery to Replace Lithium-Ion Secondary Batteries

Design image of all-solid-state battery electrode designed by Professor Oh Pil-geon of Pukyong National University.

[Asia Economy Yeongnam Reporting Headquarters Reporter Kim Yong-woo] A new electrode for the next-generation large-capacity secondary battery, known as the ‘all-solid-state battery,’ has been developed, drawing significant attention.

The all-solid-state battery is a next-generation battery that replaces the electrolyte between the cathode and anode of a battery from the conventional liquid to a solid.

According to Pukyong National University on the 22nd, Professor Oh Pil-geon of the Department of Printing Information Engineering designed a new electrode for all-solid-state batteries that can increase the output of the battery even at room temperature.

As the market for new large-capacity secondary batteries such as electric vehicles, electric ships, and power storage systems rapidly grows, research on all-solid-state batteries, which can replace lithium-ion batteries facing safety issues like explosions, is actively underway.

Currently, electrodes used in all-solid-state batteries cannot deliver high output at room temperature and require a separate system to raise the temperature. However, Professor Oh, in joint research with Professor Cho Jae-pil of UNIST, designed and proposed a new electrode design that significantly increases the conductivity of the electrode.

Professor Oh Pil-geon, Department of Printing and Information Engineering, Pukyong National University.

Professor Oh densely stacked primary particle-type cathode active materials of about 10 micrometers (㎛) in size and alternately coated the surface of the active material with electrolyte and conductive material. This newly developed electrode design greatly improved the movement characteristics of electrons and lithium ions between active materials.

Professor Oh said, “By applying the newly developed electrode, it is possible to use all-solid-state batteries without separately securing the high-output characteristics at room temperature or using a system to raise the temperature.”

The research results were published in the international journal in the fields of energy and materials, Advanced Energy Materials (IF: 25.245).

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