.png){kind=icon}
返回
High-modulus solid electrolyte interphase layer with gradient composition enables long-cycle all-solid-state lithium-sulfur batteries
.png){kind=icon}
PRE
AI
DOI：10.1016/j.jechem.2024.06.026.png)
.png){kind=icon}
原文求助.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
All-solid-state lithium-sulfur batteries (ASSLSBs) have become one of the most potential candidates for the next-generation high-energy systems due to their intrinsic safety and high theoretical energy density. However, PEO-based ASSLSBs face the dilemma of insufficient Coulombic efficiency and long-term stability caused by the coupling problems of dendrite growth of anode and polysulfide shuttle of cathode. In this work, 1,3,5-trioxane (TOX) is used as a functional additive to design a PEO-based composite solidstate electrolyte (denoted as TOX-CSE), which realizes the stable long-term cycle of an ASSLSB. The results show that TOX can in-situ decompose on the anode to form a composite solid electrolyte interphase (SEI) layer with rich-organic component. It yields a high average modulus of 5.0 GPa, greatly improving the mechanical stability of the SEI layer and thus inhibiting the growth of dendrites. Also, the robust SEI layer can act as a barrier to block the side reaction between polysulfides and lithium metal. As a result, a Li-Li symmetric cell assembled with a TOX-CSE exhibits prolonged cycling stability over 2000 h at 0.2 mA cm-2 . The ASSLSB also shows a stable cycling performance of 500 cycles at 0.5 C. This work reveals the structure-activity relationship between the mechanical property of interface layer and the battery's cycling stability. (c) 2024 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Keyword:
All -solid-state lithium -sulfur batteries
PEO-based electrolyte
SEI layer
High modulus
Long cycling stability
期刊
IF:
14.9
论文数:
6.4K
被引数:
4.5W
机构
引用论文
Redox Comediation with Organopolysulfides in Working Lithium-Sulfur Batteries在工作的锂硫电池中使用有机硫化物进行氧化还原喜剧.png)
CHEM
OAAI
CHEMIF19.6
OAAI分享收藏Atomic-scale Al2O3 modified PEO-based composite polymer electrolyte for durable solid-state Li - S batteries用于耐用固态li-s电池的原子级Al2O3改性PEO基复合聚合物电解质
PREAI
分享收藏Regulation of carbon distribution to construct high-sulfur-content cathode in lithium-sulfur batteries在锂硫电池中调节碳分布以构建高硫含量的阴极
PREAI
分享收藏Regulation of polysulfide adsorption and LiF-rich interface chemistry to achieve high-performance PEO-based lithium-sulfur batteries调节多硫化物吸附和富含LiF的界面化学以实现高性能PEO基锂硫电池
PREAI
分享收藏Homogeneous and mechanically stable solid-electrolyte interphase enabled by trioxane-modulated electrolytes for lithium metal batteries用于锂金属电池的三恶烷调制电解质使固体电解质界面均匀且机械稳定NATURE ENERGY
NATURE ENERGYIF60.1
PREAI
分享收藏Tuning the solubility of polysulfides for constructing practical lithium-sulfur battery调节多硫化物的溶解度以构建实用的锂硫电池
PREAI
分享收藏Unique aqueous Li-ion/sulfur chemistry with high energy density and reversibility具有高能量密度和可逆性的独特水性锂离子/硫化学OAAI
OAAI分享收藏Longevous Sodium Metal Anodes with High Areal Capacity Enabled by 3D-Printed Sodiophilic Monoliths由3d打印的嗜碱整料实现的具有高面积容量的长钠金属阳极ACS NANO
ACS NANOIF16
PREAI
分享收藏
查看更多内容