School of Materials Science & Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
School of Materials Science & Engineering, State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China.
Int J Biol Macromol. 2022 Nov 30;221:446-455. doi: 10.1016/j.ijbiomac.2022.09.005. Epub 2022 Sep 7.
In order to prepare high ionic conductivity and robust mechanical properties of alkaline solid polyelectrolyte (ASPE) for applications in flexible wearable devices, a co-continuous structure membrane was designed using in-situ polymerization to introduce cross-linked polyacrylic acid (N-PAA) into the cellulose network constructed by regenerated degreasing cotton (RDC). The resultant ASPE membrane showed high ionic conductivity (430 mS·cm at 25 °C), strong mechanical properties, and excellent alkaline stabilities, proving the viability of cellulose for use in energy storage systems. Surprisingly, the sandwich-shaped zinc-air battery assembled using RDC/N-PAA/KOH membranes as electrolytes exhibits superior values of cycling stability, discharge time, specific capacity (731.5 mAh·g), peak power density (40.25 mW·cm), and mechanical flexibility. Even under bending conditions, the zinc-air batteries still possess stable energy supply performance, suggesting this novel solid polyelectrolyte has promising application for wearable technology.
为了制备在柔性可穿戴设备中应用的具有高离子电导率和强机械性能的碱性固态聚合物电解质（ASPE），采用原位聚合的方法，将交联聚丙烯酸（N-PAA）引入到由再生脱脂棉（RDC）构建的纤维素网络中，设计了一种共连续结构膜。所得 ASPE 膜表现出高离子电导率（25℃时为 430 mS·cm）、强机械性能和优异的碱性稳定性，证明了纤维素在储能系统中的可行性。令人惊讶的是，使用 RDC/N-PAA/KOH 膜作为电解质组装的三明治结构锌空气电池具有出色的循环稳定性、放电时间、比容量（731.5 mAh·g）、峰值功率密度（40.25 mW·cm）和机械柔韧性。即使在弯曲条件下，锌空气电池仍具有稳定的能量供应性能，表明这种新型固态聚合物电解质在可穿戴技术方面具有广阔的应用前景。
