Unlocking the Capacity and Stability Limitations of Perovskite Electrodes and Achieving the Design of a Flame-Retardant Supercapacitor Through the “Tree Canopy” Structure
Jiahao He, Yang Zhou, Shibo Wu, Jingrui Cao, Bin Han, Zhiqiang Wang, Zaizai Tong, Muslum Demir, Pianpian Ma
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引用次数: 0
Abstract
The present study depicts innovative electrode and electrolyte designs to achieve advanced supercapacitor performance and stability. The mechanism of how the electronic structure of substitution ions impacts the phase structure and properties of SrCoO3−δ was in-depth elucidated, overcoming the inherent trade-off between specific capacity and cycle stability in perovskite materials. The as-prepared SrCo0.925Sc0.075O3−δ electrode achieves a high capacity of 467.7 C g–1 (129.92 mAh g–1) at 1 A g–1, with retention of 97.4% of its initial capacity after 10,000 cycles. Inspired by canopy structures, a “branch”-like dual-network 3D gel system was created and in situ integrated with the electrode as the “trunk”. This unique structure offers robust mechanical strength and flame retardancy, establishing an efficient conductive network. Devices featuring this design show electrochemical stability and flexibility, ensuring safe operation at extreme temperatures while balancing the stability and energy density. This research opens avenues for high-performance supercapacitors and quasi-solid-state gel batteries tailored applications.
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.