Mg2+ ion based self-charging prototype polymeric photo-power cell has been developed in a very simple and inexpensive way. Eosin Y/MgCl2/PVA mixed aqueous solution and poly(lactic acid) /polyvinylidene fluoride (3:1) composite film are the main assembling components of the device responsible for photo-electrons generation and storage. According to the study of the photovoltaic performance of the cell, a maximum of ∼1 V is obtained under the light intensity of ∼110 mW/cm2. The storage capacity of the device is evaluated to be ∼4.0 F/m2 with an energy density of ∼0.6 mWh/m2 and a power density of ∼2. 5 W/m2 by analyzing the charging–discharging data of the power cell. The charging–discharging data are also recorded for 20 cyclic performances (one cycle per day) to check the longevity of our fabricated Mg2+ ion system. A series connection of four devices can be used as a photo-power bank, which is able to lightened up commercially available 18 LEDs with high intensity, which ensures practical utilizations.

中文翻译：

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基于 PLA/PVDF 薄膜的光充电镁离子电池


Mg2+ 离子基自充电原型聚合物光动力电池以非常简单且廉价的方式开发。曙红 Y/MgCl2/PVA 混合水溶液和聚（乳酸）/聚偏二氟乙烯 （3：1） 复合膜是负责光电子产生和储存的器件的主要组装组件。根据对电池光伏性能的研究，在 ∼110 mW/cm2 的光强度下获得最大 ∼1 V。该设备的存储容量评估为 ∼4.0 F/m2，能量密度为 ∼0.6 mWh/m2，功率密度为 ∼2。5 W/m2 通过分析电池的充放电数据。还记录了 20 次循环性能（每天一个循环）的充放电数据，以检查我们制造的 Mg2+ 离子系统的使用寿命。四个设备的串联可以用作移动电源，能够以高强度点亮市售的 18 个 LED，从而确保实际使用。