Empowering all-solid-state Li-ion batteries with self-stabilizing Sn-based anodes

IF 38.6 1区 材料科学 Q1 CHEMISTRY, PHYSICAL Joule Pub Date : 2024-10-16 DOI:10.1016/j.joule.2024.08.011
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Abstract

All-solid-state Li-ion batteries (ASSLIBs) are promising but face several challenges, especially regarding Li-metal anodes prone to dendrite formation and Si-based anodes with limited performance. To address this issue, we propose a self-stabilizing Sn-based anode. While Sn anodes suffer from agglomeration during cycling, transition metal-Sn anodes, specifically FeSn2 anodes, self-stabilize during cycling by exhibiting uniformity and densification without cycling-induced agglomeration, owing to their unique electrochemical-cycling-induced size reduction and distinctive mechanical properties. A full cell with an FeSn2 anode, a LiNi0.6Co0.2Mn0.2O2 cathode, and a Li6PS5Cl solid electrolyte exhibits highly reversible areal capacity (15.54 mAh cm−2 at 100 mg cm−2 cathode loading), excellent rate capability (74.5%/83.2% retention over 1,000 cycles at 10/20 C), and exceptional energy density at high current densities. The self-stabilizing FeSn2 anodes offer high energy density, compatibility with solid electrolytes, safety, wide operating temperature range, cost effectiveness, and scalability, thereby accelerating the realization of superior ASSLIBs.

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全固态锂离子电池(ASSLIBs)前景广阔,但也面临着一些挑战,特别是锂金属阳极容易形成枝晶...
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来源期刊
Joule
Joule Energy-General Energy
CiteScore
53.10
自引率
2.00%
发文量
198
期刊介绍: Joule is a sister journal to Cell that focuses on research, analysis, and ideas related to sustainable energy. It aims to address the global challenge of the need for more sustainable energy solutions. Joule is a forward-looking journal that bridges disciplines and scales of energy research. It connects researchers and analysts working on scientific, technical, economic, policy, and social challenges related to sustainable energy. The journal covers a wide range of energy research, from fundamental laboratory studies on energy conversion and storage to global-level analysis. Joule aims to highlight and amplify the implications, challenges, and opportunities of novel energy research for different groups in the field.
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