3D Ion-Conducting,Scalable, and Mechanically Reinforced Ceramic Film for High Voltage Solid-State Batteries |
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| Authors: | Hyun Woo Kim Jinhyup Han Young Jun Lim YunSeok Choi Eungje Lee Youngsik Kim |
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| Affiliation: | 1. School of Energy & Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Unist-gil 50, Ulsan, 44919 Republic of Korea;2. Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, IL, 60439 USA |
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| Abstract: | Concerning the safety aspects of Li+ ion batteries, an epoxy-reinforced thin ceramic film (ERTCF) is prepared by firing and sintering a slurry-casted composite powder film. The ERTCF is composed of Li+ ion conduction channels and is made of high amounts of sintered ceramic Li1+xTi2-xAlx(PO4)3 (LATP) and epoxy polymer with enhanced mechanical properties for solid-state batteries. The 2D and 3D characterizations are conducted not only for showing continuous Li+ ion channels thorough LATP ceramic channels with over 10−4 S cm−1 of ionic conductivity but also to investigate small amounts of epoxy polymer with enhanced mechanical properties. Solid-state Li+ ion cells are fabricated using the ERTCF and they show initial charge–discharge capacities of 139/133 mAh g−1. Furthermore, the scope of the ERTCF is expanded to high-voltage (>8 V) solid-state Li+ ion batteries through a bipolar stacked cell design. Hence, it is expected that the present investigation will significantly contribute in the preparation of the next generation reinforced thin ceramic film electrolytes for high-voltage solid-state batteries. |
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| Keywords: | all-solid-state batteries epoxy polymers lithium ion batteries solid electrolytes |
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