The observed downsizing tendency of microelectronic devices leads to a higher demand in new types of miniaturized energy sources. Thin‐film Li‐ion batteries (LiBs) are promising candidates to fulfil this function. New materials and technologies should be investigated for customized production of miniaturized, high‐efficient solid‐state batteries. Herein, inkjet printing technology is considered as a promising one for the fabrication of LiBs. The modification of crystalline lattice of Li‐rich cathode material by aluminium, sodium, and potassium and their influence on power efficiency are studied in detail. Lithium‐manganese‐rich compounds are chosen as the most suitable composition of an active component for LiBs fabrication. The stable aqueous colloidal ink composition is synthesized and its rheological parameters are optimized for inkjet printing in terms of viscosity, surface tension, and contact angle. Protocols for inkjet printing for the fabrication of thin‐film cathodes with the thickness of less than 10 μm are reported. The good correlation of electrochemical properties such as average voltage, capacity, and energy between inkjet printed and conventionally fabricated electrodes confirms the feasibility of the suggested technological approach and selected cathode material composition.

中文翻译：

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用于薄膜锂离子微电池的富锂正极材料的喷墨印刷

观察到的微电子器件的小型化趋势导致对新型微型能源的更高需求。薄膜锂离子电池（LiBs）有望实现这一功能。应该研究新材料和新技术，以量身定制微型高效的固态电池。在此，喷墨印刷技术被认为是用于制造LiB的有前途的技术。详细研究了铝，钠和钾对富锂正极材料晶格的改性及其对功率效率的影响。选择富锂锰化合物作为制造LiBs的最合适的活性成分组成。合成了稳定的水性胶体油墨组合物，并针对粘度，表面张力和接触角，针对喷墨印刷优化了其流变参数。据报道，用于制造厚度小于10μm的薄膜阴极的喷墨打印协议。喷墨印刷的电极与常规制造的电极之间的电化学性能（例如平均电压，容量和能量）之间的良好相关性证实了建议的技术方法和所选阴极材料成分的可行性。