Sodium-ion batteries are emerging as an alternative to lithium-based chemistries, with several manufacturers anticipating commercial production in the short perspective. However, the use of sodium is not yet as well established as lithium and thus, requires further development to overcome the safety issues, incompatibility of sodium with many electrode materials, and limited specific energy. The presented study aims to introduce new sodium conductive gel polymer electrolytes with binary polymer matrix and binary plasticizer and discuss their compatibility with a hard carbon anode. In this study, the polymer matrix consists of polyacrylonitrile and poly(methyl methacrylate) in three mass ratios, 9:1, 7:3, and 5:5. The plasticizer is a mixture of sulfolane and imidazolium-based ionic liquid with BF₄^– or NTf₂^– anion. The measurements revealed that a small amount of PMMA improves the properties of gel electrolytes, including size stability at high temperatures, thermal properties, and transfer number of cations in the gel electrolytes. The electrochemical properties strongly depend on the anion of the ionic liquid. However, the kinetics of Na⁺ conduction in a hard carbon anode is favorable in the presence of an ionic liquid with NTf₂^– anion. Furthermore, systems with hard carbon anode and gel electrolyte with sulfolane/[EMIm][NTf₂] plasticizer exhibit activation energy of charge transfer process similar to the lithium-based chemistries. This fact makes these electrolytes good candidates for use in a sodium-ion battery.

钠离子电池正在成为锂基化学物质的替代品，一些制造商预计短期内将实现商业化生产。然而，钠的使用尚未像锂那样成熟，因此需要进一步开发以克服安全问题、钠与许多电极材料的不相容性以及比能量有限等问题。本研究旨在介绍具有二元聚合物基体和二元增塑剂的新型钠导电凝胶聚合物电解质，并讨论它们与硬碳负极的相容性。在这项研究中，聚合物基质由聚丙烯腈和聚（甲基丙烯酸甲酯）组成，三种质量比为 9:1、7:3 和 5:5。增塑剂是环丁砜和咪唑类离子液体的混合物，BF ₄ ^-或 NTf ₂ ^–阴离子。测量结果表明，少量的 PMMA 可以改善凝胶电解质的性能，包括高温下的尺寸稳定性、热性能和凝胶电解质中阳离子的转移数。电化学性质强烈依赖于离子液体的阴离子。然而，在含有 NTf ₂ ^–阴离子的离子液体存在下，硬碳阳极中的 Na ^{+传导动力学是有利的。}此外，具有硬碳阳极和含有环丁砜/[EMIm][NTf _{2的凝胶电解质的系统}] 增塑剂表现出类似于锂基化学的电荷转移过程的活化能。这一事实使这些电解质成为钠离子电池的良好候选者。