Chen Li, Li Boqiao, Zhu Liangliang, Deng Xiaobin, Sun Xueyan, Liu Yilun, Zhang Chen, Zhao Wei, Chen Xi
School of Chemical Engineering, Northwest University Xi'an 710069 China.
School of Aerospace, Xi'an Jiaotong University Xi'an 710049 China.
RSC Adv. 2021 Dec 13;11(62):39476-39483. doi: 10.1039/d1ra07180g. eCollection 2021 Dec 6.
Aluminum-air batteries are promising electronic power sources because of their low cost and high energy density. However, traditional aluminum-air batteries are greatly restricted from being used in the field of flexible electronics due to the rigid battery structure, and the irreversible corrosion of the anode by the alkaline electrolyte, which greatly reduces the battery life. To address these issues, a three-dimensional dual-network interpenetrating structure PVA/LiCl/PEO composite gel polymer electrolyte (GPE) is proposed. The gel polymer electrolyte exhibits good flexibility and high ionic conductivity ( = 6.51 × 10 S cm) at room temperature. Meanwhile, benefiting from the high-performance GPE, an assembled aluminum-air coin cell shows a highest discharge voltage of 0.73 V and a peak power density ( ) of 3.31 mW cm. The Al specific capacity is as high as 735.2 mA h g. A flexible aluminum-air battery assembled using the GPE also performed stably in flat, bent, and folded states. This paper provides a cost-effective and feasible way to fabricate a composite gel polymer electrolyte with high performance for use in flexible aluminum-air batteries, suitable for a variety of energy-related devices.
铝空气电池因其低成本和高能量密度而成为有前景的电子电源。然而，传统铝空气电池由于其刚性的电池结构以及碱性电解质对阳极的不可逆腐蚀，在柔性电子领域的应用受到极大限制，这大大缩短了电池寿命。为了解决这些问题，提出了一种三维双网络互穿结构的PVA/LiCl/PEO复合凝胶聚合物电解质（GPE）。该凝胶聚合物电解质在室温下表现出良好的柔韧性和高离子电导率（=6.51×10 S cm）。同时，受益于高性能的GPE，组装的铝空气硬币电池显示出最高放电电压为0.73 V，峰值功率密度（）为3.31 mW cm。铝的比容量高达735.2 mA h g。使用GPE组装的柔性铝空气电池在平坦、弯曲和折叠状态下也能稳定运行。本文提供了一种经济高效且可行的方法来制备用于柔性铝空气电池的高性能复合凝胶聚合物电解质，适用于各种与能源相关的设备。
