Engineering Triple-Phase Interfaces with Hierarchical Carbon Nanocages for High-Areal-Capacity All-Solid-State Li-S Batteries

Engineering Triple-Phase Interfaces with Hierarchical Carbon Nanocages for High-Areal-Capacity All-Solid-State Li-S Batteries

© 2024 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - (2024) vom: 16. Nov., Seite e2413325
1. Verfasser: Luo, Yu (VerfasserIn)
Weitere Verfasser: Pan, Siyuan, Tian, JingYi, Liang, Yali, Zhong, Haoyue, Ma, Ruqin, Gu, Jiabao, Wu, Yuqi, Zhang, Huiyan, Lin, Hongxin, Huang, Weilin, Deng, Yuxi, Su, Yu, Gong, Zhengliang, Huang, Jianyu, Hu, Zheng, Yang, Yong
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article all‐solid‐state lithium‐sulfur batteries electrochemical‐mechanical failure hierarchical carbon nanocages multi‐dimensional structural engineering triple‐phase interface
Beschreibung
Zusammenfassung:© 2024 Wiley‐VCH GmbH.
All-solid-state lithium-sulfur batteries (ASSLSBs) have garnered widespread attention due to their advantages of high energy density and enhanced safety. However, the typical composite structure composed of solid-state electrolyte (SE), discrete conducting carbon black, and microsized sulfur (μ-S) with long-range Li+/e- conducting path and huge volume changes, suffers from sluggish charge transport and severe electrochemical-mechanical failure. In this work, a unique hierarchical carbon nanocage (hCNC) is applied as a continuous conducting network where nanosized sulfur are confined. Due to the synergistic effects of multi-dimensional (particle, interface, and electrode) structural engineering, this new sulfur-carbon composite cathode (ShCNC39) can achieve uniform distribution of sulfur and carbon, and efficiently constructs triple-phase interfaces, showing enhanced charge-carrier transport and improved electrochemical-mechanical stability. Remarkable cycling performance of 89% after 300 cycles at 0.2 C at 30 °C is realized in ASSLSBs assembled with S@hCNC39. Notably, ASSLSBs achieve an ultrahigh areal capacity of 9.95 mAh cm-2 with stable cycling at 60 °C with high sulfur contents of 40% and high sulfur loadings of 6 mg cm-2. These results provide critical insights into the design of rational sulfur-carbon composites and offer a viable approach to enhance the overall performance of ASSLSBs
Beschreibung:Date Revised 16.11.2024
published: Print-Electronic
Citation Status Publisher
ISSN:1521-4095
DOI:10.1002/adma.202413325