期刊
CHEMICAL ENGINEERING JOURNAL
卷 470, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2023.144339
关键词
Hierarchical structure; Gel electrolyte; Safe; Flexible; Zinc ion hybrid supercapacitor
In this study, an extremely safe and flexible quasi-solid-state zincion hybrid supercapacitor (ZHSC) was developed, using a scalable, thin, and high-performance hierarchical gel electrolyte that includes electrospun polyacrylonitrile (PAN) matrix, polyacrylamide (PAM), and zinc salt. The ZHSC achieved high energy density, power density, specific capacity, and cycling stability. It also demonstrated extreme safety and high wearability, outperforming traditional flexible batteries, making it suitable for various extreme conditions.
High performance and low cost energy storage electronic equipments, together with flexibility and safety, is a major progress in portable and wearable electronics. Unfortunately, flexible batteries are greatly limited due to their inherent cost and safety drawbacks. Herein, we build an extremely safe and flexible quasi-solid-state zincion hybrid supercapacitor (ZHSC) by a scalable, thin, and high-performance hierarchical gel electrolyte including the electrospun polyacrylonitrile (PAN) matrix, polyacrylamide (PAM) and zinc salt. Benefiting from the unique interface and superior electrochemical performance of the well-designed electrolyte, the flexible ZHSC achieves a high energy density and power density (132.5 Wh kg-1 and 1244.4 W kg-1, respectively), high specific capacity (106.0 mAh/g at 1.0 A/g) and prominent cycling stability (100% capacity retention after 15 000 cycles at 10.0 A/g). More importantly, the quasi-solid-state ZHSC exhibits an extreme safety and a high wearability outperforming traditional flexible batteries and can continuously work in various extreme conditions, such as hammering, burning, washing, cutting, bending and piercing. It is believed that this hierarchical structured gel electrolyte provides a new platform and pave the way for flexible and wearable electronics with high performance and safety.
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