The significant impact of the process steps on the electrode performance is one of the least developed aspects in the field of solid-state batteries despite being a key issue for the transference of lab-scale developments to production scale. To demonstrate that the knowledge of production parameters is essential, a set of high active material loading solid-state batteries with a lithium metal anode and a polymer electrolyte is fabricated using different mixing methods for the catholyte preparation. Depending on the shear rate of the mixer, the polymer molecular weight and consequently, the viscosity of the catholyte is affected and these differences are preserved during the slurry preparation and electrode coating. The electrochemical performance of each cathode is studied in full-cell configuration obtaining high areal capacities (≈1 mAh cm⁻²) and high specific capacities (92%, 82%, and 95% of the theoretical capacity of LiFePO₄). After 50 cycles, composite cathodes mixed with high-shear-rate techniques experience a capacity fade related with the larger degree of deagglomeration of the C65 occurring when less viscous catholytes are used. Low-shear-rate cathodes keep the starting capacity, revealing a protective role of the catholyte during the wet-mixing process.

中文翻译：

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固态复合阴极阴极液混合方法的相关性

尽管是将实验室规模开发转移到生产规模的关键问题，但工艺步骤对电极性能的重大影响是固态电池领域最不发达的方面之一。为了证明生产参数的知识是必不可少的，使用不同的阴极电解液制备混合方法制造了一组具有锂金属阳极和聚合物电解质的高活性材料负载固态电池。取决于混合器的剪切速率、聚合物分子量以及阴极电解液的粘度，这些差异会在浆料制备和电极涂覆过程中保持不变。在全电池配置中研究每个正极的电化学性能，获得高面积容量（≈1 mAh cm^-2 ) 和高比容量（LiFePO ₄理论容量的 92%、82% 和 95% ）。50 次循环后，与高剪切速率技术混合的复合阴极会出现容量衰减，这与使用粘度较低的阴极电解液时发生的 C65 解聚的程度较大有关。低剪切速率阴极保持起始容量，揭示了阴极电解液在湿混合过程中的保护作用。