Integrated Thin Film Battery Design for Flexible Lithium Ion Storage: Optimizing the Compatibility of the Current Collector‐Free Electrodes,Advanced Functional Materials

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Integrated Thin Film Battery Design for Flexible Lithium Ion Storage: Optimizing the Compatibility of the Current Collector‐Free Electrodes
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2019-08-25 , DOI: 10.1002/adfm.201903542
Wenyu Zhao ₁ , Miao Bai ₁ , Shaowen Li ₁ , Xiaoyu Tang ₁ , Weiwei Wu ₁ , Changchun Sun ₁ , Xiaokang Yin ₂ , Jie Zhou ₃ , Shuai Yuan ₄ , Yue Ma ₁

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The design of flexible full‐cell configuration relies on the light‐weight arrangement, structural robustness, compositional compatibility, and shape conformability of the coherent components. In this article, a general and scalable spin‐coating approach is developed to integrate the flexible, current‐collector‐free cathode and anode in the thin film batteries with the layer‐stacked configuration. The design of the ternary composite anode involves the reduced graphene oxide encapsulation of the MoS₂/N‐doped carbon microrods composite (rGO‐MoS₂/NC) via the facile hydrothermal‐calcination process. In the similar structure design of the cathode, the ball‐milled nanocrystalline mixture of LiMn₂O₄ and LiVPO₄F is wrapped within the GO interfacial protection layer. Furthermore, the slurries of electroactive materials with the predetermined areal capacity ratio of negative to positive electrodes (N/P ratio) are cast onto both sides of the nano‐SiO₂ modified polyethylene (SiO₂‐MPE) separator via the facile spin‐coating process. The prototype full‐cell configuration delivers a high reversible capacity, satisfactory capacity retention at the high rate, as well as good cyclability under different mechanical loadings. This integrated thin film battery model showcases its potential use in the flexible electronic devices.

中文翻译：

集成薄膜电池设计，用于灵活的锂离子存储：优化无集电极的电极的兼容性

灵活的全单元格配置的设计依赖于轻巧的布置，结构坚固性，成分兼容性以及相干组件的形状一致性。在本文中，开发了一种通用且可扩展的旋涂方法，以将具有叠层配置的薄膜电池中的柔性，无集电器的阴极和阳极集成在一起。三元复合阳极的设计涉及通过便捷的水热煅烧工艺对MoS ₂ / N掺杂的碳微棒复合材料（rGO-MoS ₂ / NC）进行氧化石墨烯的减少封装。在类似的阴极结构设计中，LiMn ₂ O ₄和LiVPO ₄的球磨纳米晶混合物F包裹在GO界面保护层中。此外，通过方便的旋涂将具有预定面积的负极与正极面积容量比（N / P比）的电活性材料浆料浇铸到纳米SiO ₂改性聚乙烯（SiO ₂ -MPE）隔膜的两侧过程。原型全电池配置可提供高可逆容量，高速率下令人满意的容量保持能力以及在不同机械负载下的良好可循环性。这种集成的薄膜电池模型展示了其在柔性电子设备中的潜在用途。

更新日期：2019-10-23

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