Double anode design novel, high performance lithium ion battery is available!
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2023/03/02 10:23:33
The Korea Institute of Machinery and Materials (KIMM) has developed a battery electrode design and fabrication technique. The technology is said to significantly improve the performance and stability of batteries in devices such as smartphones, laptops and electric cars. The research results were recently published in Advanced Functional Materials.
The new electrode technology, developed by a joint research team led by lead researcher SeunGMIn Hyun of KIMM's Nanomechanics Department and Professor Hoo-jeong Lee of Sungkyunkwan University, improves the reliability and performance of conventional lithium-ion batteries through a negative electrode structure.
In order to develop a design and processing technique that can maintain high performance and reliability even when lithium-ion batteries have thick electrodes, the research team developed a double-layer anode. The anode design has grooves that allow the placement of small materials with improved ionic and electrical conductivity between high capacity materials.
In general, in the manufacturing of lithium-ion battery electrodes, the metal collector fluid needs to be coated and dried so that it is evenly distributed throughout the electrode. Therefore, the homogeneity of the paste determines the performance of the electrode. The thicker the electrode, the lower the energy density and uniformity, and it is difficult to maintain the performance in high power environment.
Slurry is a mixture of solid and liquid. Specifically, this refers to a mixture of active materials that undergo chemical reactions to produce electrical energy when the battery is discharged, adhesives added to stabilize the electrode structure, and conductive materials added to improve conductivity.
With this newly developed battery anode structure, even if the electrode is very thick, uniform reaction stability can be achieved while maintaining a high energy density throughout the electrode. This is very helpful to improve the performance and life of the battery.
Lead researcher Seungmin Hyun said this is an effective way to apply the new design to traditional lithium-ion battery materials and processes, which can improve battery performance and life. The team is working on adapting the new technology to electric cars and soft robots, as well as electronic devices such as business smartphones and laptops.
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