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New electrode design for lithium-ion batteries improves performance


KIMM develops world's first electrode design for lithium-ion batteries that improve smartphone/laptop battery performance

Electrode (anode) with grooved, patterned double-layer construction. Credit: Korea Institute of Machinery and Materials (KIMM)

The Korea Institute of Machinery & Materials (KIMM) announced the development of the world’s first battery electrode design and process technology that greatly improves the performance and stability of the batteries used. in electronic devices such as smartphones, laptops and electric vehicles.

A joint research team led by principal investigator Seungmin Hyun of the Department of Nanomechanics at KIMM, an institution under the jurisdiction of the Ministry of Science and ICT, and Professor Hoo-jeong Lee of Sungkyunkwan University developed a new battery technology that uses an electrode (anode) structure that enhances the reliability and performance of traditional lithium-ion batteries.

The results of their research achievements have been published in the journal Advanced functional materials.

To develop a design and processing technology maintain High performance and reliability even when the lithium-ion battery’s electrode is thick, the KIMM-SKKU joint research team created a double-layer anode. In addition, the anode is designed with grooves that allow small materials to have improved ionic conductivity and electricity elf placed between high-capacity materials.

Generally, lithium-ion battery electrodes are manufactured by coating and drying a slurry so that it can be evenly distributed over the entire electrode. As such, the uniformity of the slurry determines the performance of the battery. The thicker the electrode, the lower power density and uniformity, making it difficult to maintain performance in high-energy environments.

KIMM develops world's first electrode design for lithium-ion batteries that improve smartphone/laptop battery performance

Double layer electrode battery in bag form. Credit: Korea Institute of Machinery and Materials (KIMM)

However, with the anode structure of this newly developed battery, uniform reaction stability can be achieved while maintaining high energy density throughout the electrode, even when the electrode is thick. This is especially helpful in improving battery performance and life.

Lead researcher Seungmin Hyun said the achievement is an effective method to improve battery performance and life by adopting a new design for traditional lithium-ion battery processes and materials. He added that the team will continue to work hard to apply this new technology in tram and soft robots that require high energy densities in high-energy environments, as well as to electric devices such as commercial smartphones and laptops.

More information:
Myoung‐Ho Kim et al, Design strategy towards high performance carbon double layer anode for improved ion transport and reaction stability, Advanced functional materials (2022). DOI: 10.1002/adfm.202208665

Provided by the National Science & Technology Research Council

quote: New electrode design for lithium-ion batteries that improves performance (2023, Jan 27) retrieved Jan 27, 2023 from https://techxplore.com/news/2023-01-electrode- lithium-ion-batteries.html

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