Solid electrolyte static and dynamic stability verification
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Research results that investigated the stability of the solid electrolyte, a component of a seawater battery, were announced one after another. A seawater battery is an eco-friendly energy storage device that charges electricity using sodium (Na+) ions in seawater and can be drained (discharged) when desired.
UNIST (President Yong-Hoon Lee) announced on the 13th that the research team of Professor Hyun-wook Lee, Young-sik Kim, and Sang-gyu Kwak has verified the static and dynamic stability of solid electrolytes used in seawater batteries, which are the next-generation eco-friendly batteries, through two separate studies.
The researchers produced a solid electrolyte material in the form of a’pellet’ (a thin mass of powder) that is actually used in seawater batteries, and then exposed it to seawater or exposed to dynamic changes such as charging and discharging to ensure the stability of the solid electrolyte for seawater batteries. Proved.
The researchers said, “This study not only proved the stability of the solid electrolyte used in seawater batteries in the actual driving environment, but also revealed the electrochemical reaction that occurs in the charging and discharging situations. “This will serve as a guide for the development of new solid electrolytes for seawater batteries in the future. I could do it.”
The solid electrolyte is a core part of a seawater battery that acts as a’filter’ that protects electrodes from seawater and selectively passes only sodium ions in seawater. However, so far, there has been no case of examining the stability of the solid electrolyte of a seawater battery in an actual driving environment.
Professor Hyun-wook Lee said, “This research is of great value as a preceding study necessary to develop a more chemically stable solid electrolyte.” “The seawater battery that can be used longer by increasing the stability and reliability of the solid electrolyte that plays a key role in seawater battery It will help to develop.”
The research results were published on October 1st and December 29th, respectively, in the International Journal of Materials Chemistry A and the Chemistry of Materials, respectively. The research was conducted with support from the Korea Research Foundation and Korea Institute of Energy Technology Evaluation. Reporter Jeong In-jun
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