Paudel Abhishek, Crum Ajalynn N, Wang Ying
Department of Mechanical & Industrial Engineering, Louisiana State University, Baton Rouge, Louisiana 70803, United States.
ACS Appl Mater Interfaces. 2024 Oct 23;16(42):57130-57140. doi: 10.1021/acsami.4c12656. Epub 2024 Oct 11.
Emerging portable energy systems with integrated sustainability and improved safety have garnered growing interest in wearable electronics. Herein, a self-charging zinc-ion battery is successfully developed by integrating a PVDF-ZnO piezoelectric separator immersed in a quasi-solid-state hydrogel electrolyte (prepared using a 3 m Zn(CFSO)) solution that is sandwiched between a FeVO cathode and a zinc anode. This battery effectively captures energy through controlled tapping, eliminating the need for external charging and enabling sustainable energy storage. This self-charging battery can be charged up to 181.23 mV under continuous tapping for 300 s. Upon the cease of tapping, there is a slight decline in the induced potential, which then stabilizes and maintains a consistent potential. Five self-charging batteries connected in series and tapped simultaneously for 300 s generate a potential of 290 mV, whereas five batteries connected in series and tapped one by one induce a potential of 345 mV. This is the first time that a piezoelectric self-charging zinc-ion battery is reported. This study unveils a transformative strategy for realizing next-generation wearable electronics with a self-charging zinc-ion battery design that prioritizes both sustainability and safety.
具有综合可持续性和更高安全性的新兴便携式能源系统在可穿戴电子产品中引起了越来越多的关注。在此，通过将浸入准固态水凝胶电解质（使用3 m Zn(CFSO)溶液制备）中的PVDF-ZnO压电隔膜集成在一起，成功开发了一种自充电锌离子电池，该隔膜夹在FeVO阴极和锌阳极之间。这种电池通过可控敲击有效地捕获能量，无需外部充电并实现可持续的能量存储。这种自充电电池在连续敲击300秒的情况下可充电至181.23 mV。敲击停止后，感应电位略有下降，然后稳定并保持一致的电位。五个串联的自充电电池同时敲击300秒会产生290 mV的电位，而五个串联的电池逐个敲击会感应出345 mV的电位。这是首次报道压电自充电锌离子电池。这项研究揭示了一种变革性策略，通过优先考虑可持续性和安全性的自充电锌离子电池设计来实现下一代可穿戴电子产品。
