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A Flexible Solid‐State Aqueous Zinc Hybrid Battery with Flat and High‐Voltage Discharge Plateau
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2019-10-30 , DOI: 10.1002/aenm.201902473 Zhuoxin Liu 1 , Qi Yang 2 , Donghong Wang 2 , Guojin Liang 2 , Youhuan Zhu 3 , Funian Mo 2 , Zhaodong Huang 2 , Xinliang Li 2 , Longtao Ma 2 , Tiancheng Tang 2 , Zhouguang Lu 3 , Chunyi Zhi 2, 4
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2019-10-30 , DOI: 10.1002/aenm.201902473 Zhuoxin Liu 1 , Qi Yang 2 , Donghong Wang 2 , Guojin Liang 2 , Youhuan Zhu 3 , Funian Mo 2 , Zhaodong Huang 2 , Xinliang Li 2 , Longtao Ma 2 , Tiancheng Tang 2 , Zhouguang Lu 3 , Chunyi Zhi 2, 4
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The migration of zinc‐ion batteries from alkaline electrolyte to neutral or mild acidic electrolyte promotes research into their flexible applications. However, discharge voltage of many reported zinc‐ion batteries is far from satisfactory. On one hand, the battery voltage is substantially restricted by the narrow voltage window of aqueous electrolytes. On the other hand, many batteries yield a low‐voltage discharge plateau or show no plateau but capacitor‐like sloping discharge profiles. This impacts the battery's practicability for flexible electronics where stable and consistent high energy is needed. Herein, an aqueous zinc hybrid battery based on a highly concentrated dual‐ion electrolyte and a hierarchically structured lithium‐ion‐intercalative LiVPO4F cathode is developed. This hybrid battery delivers a flat and high‐voltage discharge plateau of nearly 1.9 V, ranking among the highest reported values for all aqueous zinc‐based batteries. The resultant high energy density of 235.6 Wh kg−1 at a power density of 320.8 W kg−1 also outperforms most reported zinc‐based batteries. A designed solid‐state and long‐lasting hydrogel electrolyte is subsequently applied in the fabrication of a flexible battery, which can be integrated into various flexible devices as powerful energy supply. The idea of designing such a hybrid battery offers a new strategy for developing high‐voltage and high‐energy aqueous energy storage systems.
中文翻译：
具有平坦和高压放电平稳期的柔性固态水性锌混合电池
锌离子电池从碱性电解质向中性或中性酸性电解质的迁移促进了对其灵活应用的研究。但是，许多报道的锌离子电池的放电电压远远不能令人满意。一方面，电池电压基本上受水性电解质窄电压窗口的限制。另一方面，许多电池会产生低压放电平稳段，或者没有平稳段，而是电容器状的倾斜放电曲线。这影响了电池在需要稳定且稳定的高能量的柔性电子产品中的实用性。本文是基于高浓度双离子电解质和分层结构的锂离子嵌入LiVPO 4的水性锌混合电池F阴极被开发出来。这种混合电池可提供接近1.9 V的平坦高压放电平稳期，在所有水性锌基电池的报告值中均名列前茅。235.6瓦公斤的所得高能量密度-1在320.8千克w ^的功率密度-1也性能优于最报道基于锌的电池。随后，将设计好的固态且持久的水凝胶电解质应用于柔性电池的制造中，该电池可以作为强大的能量供应源集成到各种柔性设备中。设计这种混合动力电池的想法为开发高压和高能量的水性储能系统提供了新的策略。
更新日期：2019-12-13
中文翻译：
具有平坦和高压放电平稳期的柔性固态水性锌混合电池
锌离子电池从碱性电解质向中性或中性酸性电解质的迁移促进了对其灵活应用的研究。但是，许多报道的锌离子电池的放电电压远远不能令人满意。一方面，电池电压基本上受水性电解质窄电压窗口的限制。另一方面，许多电池会产生低压放电平稳段，或者没有平稳段，而是电容器状的倾斜放电曲线。这影响了电池在需要稳定且稳定的高能量的柔性电子产品中的实用性。本文是基于高浓度双离子电解质和分层结构的锂离子嵌入LiVPO 4的水性锌混合电池F阴极被开发出来。这种混合电池可提供接近1.9 V的平坦高压放电平稳期，在所有水性锌基电池的报告值中均名列前茅。235.6瓦公斤的所得高能量密度-1在320.8千克w ^的功率密度-1也性能优于最报道基于锌的电池。随后，将设计好的固态且持久的水凝胶电解质应用于柔性电池的制造中，该电池可以作为强大的能量供应源集成到各种柔性设备中。设计这种混合动力电池的想法为开发高压和高能量的水性储能系统提供了新的策略。
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