通过电气化界面优化和协同转换设计稳定锂金属电池的金属磷化物固液界面。

IF 36.3 1区材料科学 Q1 Engineering

Nano-Micro Letters Pub Date : 2025-06-27 DOI:10.1007/s40820-025-01813-1

Jung Been Park, Changhoon Choi, Min Sang Kim, Hyeongbeom Kang, Eunji Kwon, Seungho Yu, Dong-Wan Kim

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引用次数: 0

摘要

调节锂金属的成核和生长对于实现稳定的高能量密度锂金属电池（lmb）至关重要，因为它没有枝晶锂生长、严重的体积膨胀和“死锂”积累。在此，我们提出了一个由多孔SnP0.94/CoP p-n异质结粒子（SCP）组成的调制层，利用Kirkendall效应合成。SCP中独特的异质界面诱导了一个完全电离的耗尽区和内置电场。这提供了强的锂亲和力，额外的吸附位点，并促进了电子转移，从而指导无枝晶的锂成核/生长，具有低的锂沉积过电位。此外，考虑到SCP与Li的反应，SCP的战略设计在渐进循环中产生了导电的Co，亲锂的Li- sn合金和离子导电的Li3P。电子离子混合导体（MEIC）保证了SCP调制层的长期稳定性。有了这一层，SCP@Li对称电池即使在5ma cm-2的高电流密度下也能保持750次低过电位。此外，LiFePO4//SCP@Li全电池在0.5 c下循环800次，每循环可实现0.03%的难以察觉的容量衰减。

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查看原文本刊更多论文

Designing Metal Phosphide Solid-Electrolyte Interphase for Stable Lithium Metal Batteries Through Electrified Interface Optimization and Synergistic Conversion

Highlights

Through strategic heterostructure design, it is possible to create electrified interfaces that induce the formation of a fully ionized depletion region and a built-in electric field.
These electrified interfaces enhance Li affinity and promote uniform current distribution, leading to stable Li deposition behavior.
Owing to intentional design, SnP_0.94/CoP heterostructure enables in situ conversion to a mixed ionic/electronic conductor during cycling, ensuring the long lifespan.

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.