The Role of ZSM‐5 Zeolite Paracrystalline on Compatibility of CMCh‐Based Composite Solid Electrolyte

Abstract Achieving compatibility of composite solid electrolytes among materials for fabricating lithium‐ion batteries presents a significant challenge. This work aimed to study the role of the ZSM‐5 zeolite paracrystalline on the compatibility of CMCh‐based CSE. The ZSM‐5 zeolite intermediates and products were synthesized using the free organic template method, while the CSE membranes were fabricated by combining CMCh, ZSM‐5, and lithium perchlorate (LiClO 4 ) using the solution‐casting method. The result showed that the synthesis of ZSM‐5 zeolite has been successfully performed. FTIR spectrum at wavenumber ~950 cm −1 of ZSM‐5 zeolite indicates that secondary building unit (SBU) structures exist. The SBU structure of ZSM‐5 zeolite indicates the paracrystalline structure of ZSM‐5 zeolite, which is compatible with the CMCh structure. The characterizations in this work were conducted to study the interaction, morphology, crystallinity index, thermal stability, mechanical strength, and ionic conductivity through FTIR, SEM, XRD, TGA, tensile tester, and EIS, respectively. The CSE of CMCh/Z5AH‐LiClO 4 was the optimum condition exhibiting ionic conductivity as high as 4.35 x 10 −6 S cm −1 with a crystallinity index of 34.25 %, a tensile strength of 46.67 MPa and onset thermal degradation of 262.61 °C. These results suggest that CMCh/Z5AH‐LiClO 4 holds promise as a solid electrolyte material for lithium‐ion batteries.